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On the fatigue behavior of low

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THE EFFECTS OF PROCESSING RESIDUAL STRESSES ON

Figure 4.10 SEM fractographs of steady state crack growth behavior of 6061-T61 in low and high residual stress conditions for low,intermediate,and high applied stress ratios at high magnification to show fatigue striations.(a) Low residual stress,R=0.1.(b) Low residual stress,R=0.5.(c) Low residual stress,R=0.7.(d) High residual stress THE EFFECT OF WATER ON THE FATIGUE BEHAVIORDuring the middle of the fatigue life,these cracks become more regularly spaced and extend all the way across the lower surface.Further fatigue causes the cracks to deepen until they go through the layer of fiber strand mat on the surface and reach the first layer of unidirectional fibers underneath.Toward the end of the fatigue life,Study on Low Cycle Fatigue and Tensile Behavior of Al 5083 The paper is on low cycle fatigue and tensile behavior of hybrid composite with Al5083 alloy as matrix material and different weight percentages of multi-walled carbon nanotube (CNT),molybdenum boride (MoB),and nickel (Ni) as reinforcements.Low cycle fatigue test is conducted loading with a stress ratio of 0.1 and maximum load of 50 kN.

Related searches for On the fatigue behavior of low

low energy fatigue in menfatigue low ironSome results are removed in response to a notice of local law requirement.For more information,please see here.Previous123456NextOn the fatigue behavior of low-temperature gaseous Aug 19,2020 On the fatigue behavior of low#0183;In order to investigate the effects of low-temperature gaseous carburization on the fatigue behavior of AISI 316L,fully reversed axial fatigue tests were performed at room temperature on specimens with various remaining case depths.Multiscale damage analysis of the tensiontension fatigue Jul 27,2020 On the fatigue behavior of low#0183;This article presents the experimental findings of tensiontension stresscontrolled fatigue tests performed on lowdensity sheet molding compound (LDSMC).LDSMC composite is a type of SMC including a polyester resin reinforced with chopped glass fibers bundles and hollow glass spheres.

Low-Cycle Fatigue Behavior of Thin-Sheet Extruded

Jan 21,2020 On the fatigue behavior of low#0183;In this work,we investigate a novel testing method for fatigue testing of a thin sheet under fully reversed conditions.Specifically,the fatigue behavior of thin-plate AA6082-T6 was characterized by laminating multiple thin gage specimens together to form a thicker specimen to prevent buckling under low-cycle fatigue testing.In this unique technique,ASTM E606 fatigue specimens were bonded Low-Cycle Fatigue Behavior of Thin-Sheet Extruded Aluminum Jan 21,2020 On the fatigue behavior of low#0183;In this work,we investigate a novel testing method for fatigue testing of a thin sheet under fully reversed conditions.Specifically,the fatigue behavior of thin-plate AA6082-T6 was characterized by laminating multiple thin gage specimens together to form a thicker specimen to prevent buckling under low-cycle fatigue testing.Low cycle fatigue behavior of high strength gun steelsWang et al.studied the low-cycle fatigue behavior of two kinds of gun barrel steel at normal temperature by testing and found that higher toughness and hardness of steel is beneficial for

Low Cycle Fatigue and Fatigue Crack Growth

The low cycle fatigue (LCF) behavior and fatigue crack growth rates (da/dN) of alloy IN718 were studied in detail at 360,550 and 650 C,including the cycle stress-strain behavior,Massing effect,the LCF lives expressed by plastic strain energy and fatigue crack growth rates.In addition,the effect of hold time on da/dN was also discussed.Hold Time-Low Cycle Fatigue Behavior of Nickel Based Feb 07,2019 On the fatigue behavior of low#0183;Hastelloy X,a material used in gas turbines,is subject to complex damage because of creep and fatigue in a high temperature environment during the operation of gas turbines.Although the low cycle behavior of Hastelloy X has been widely investigated,the number of studies focusing on the actual operating conditions of the gas turbine is limited.Fatigue damage analysis of reinforced concrete column To consider the fatigue behavior of steel in the damage model,the experimental research on reinforcing steel bar grades HRB400 was presented.The monotonic tension test and lowcycle fatigue test were carried out.The plastic strain amplitudefatigue cycle ( p 2N f) curve and plastic strain amplitudestrength loss factor ( p

Fatigue Strain-Life Behavior of Carbon and Low-Alloy

Fatigue S-N behavior for carbon and low-alloy steels estimated from the model and determined experimentally in air at room temperature and 290 On the fatigue behavior of low#176;C 11 4.Experimental and predicted values of fatigue life of austenitic stainless steels and Alloy 600 in air and water environments 13 5.Fatigue S-N behavior for Types 304 and 316 stainless steel and Experimental Investigation of the Fatigue Behavior of Fatigue behavior is an important factor for mechanical analysis of concrete members reinforced by basalt fiber reinforced polymer (BFRP) grid and polymer cement mortar (PCM) and plays a critical role in ensuring the safety of reinforced concrete bridges and other structures.In this study,on the basis of the static loading test results of concrete specimens reinforced by BFRP grid and PCM,a Effects of prior cold working on low cycle fatigue Nov 23,2010 On the fatigue behavior of low#0183;The influence of PCW on LCF behavior of type 304 and AISI 304LN stainless steel was studied at various temperatures and it was observed that the fatigue life was strongly dependent on prior cold work,temperature,and strain amplitude employed.

Effects of Strain Rate on Low Cycle Fatigue Behaviors of

The low cycle fatigue (LCF) behavior of a high-strength structural steel was investigated in the strain rate range of 4 On the fatigue behavior of low#215;10 5 0.12 s 1 (0.0013 Hz) under constant total strain ( On the fatigue behavior of low#177;1%) control.Effect of the Machining Processes on Low Cycle Fatigue machining damage which can cause low cycle fatigue failures.Approach Team with an engine company to study the effect of production tooling on surface integrity and its effect on low cycle fatigue.Extensive characterization and quantification of the effect of machining conditions on surface/near surface material response.QUANTIFY DAMAGE .Effect of strain amplitude on the low-cycle fatigue The low-cycle fatigue (LCF) properties and post-fatigue microstructure of a Fe-15Mn-10Cr-8Ni-4Si austenitic alloy were investigated under an axial strain control mode with total strain amplitudes, t /2,ranging from 2.5 On the fatigue behavior of low#215; 10-3 to 2 On the fatigue behavior of low#215; 10-2.The fatigue resistance of the alloy was described by Coffin-Manson's and Basquin's relationships,and the corresponding fatigue parameters were evaluated.

Effect of sodium environment on the creep-rupture and low

The results indicate that a low-oxygen sodium environment has no deleterious effects on the continuous-cycle fatigue behavior of Type 304 stainless steel,and the fatigue life in sodium is superior to that in air.The presence of residual cold work in the material reduces fatigue life.Effect of residual surface stress on the fatigue behavior Rather,the fatigue behavior was controlled by sub-surface defects consisting of weakly bonded particles located in regions of high porosity.AB - In this study we have characterized the fatigue behavior of a low-alloy powder metallurgy (P/M) sintered steel,composedEffect of microstructure refinement on low cycle fatigue Effect of microstructure renement on low cycle fatigue behavior of Alloy 718 Shamil Mukhtarova and Farid Utyashev Institute for Metals Superplasticity Problems of the Russian Academy of Sciences,450001 Ufa Stepana Khalturina 39,Russia Abstract.

Effect of forging surface on fatigue behavior of steels a

decarburization and scale defects.In general,fatigue life decreases as surface roughness increases,particularly in the high cycle fatigue (HCF) region.Surface roughness has less of an effect in the low cycle fatigue (LCF) region.Decarburization results from forging process as well as heat treatment.Effect of change in microstructures due to simulation Nov 01,2020 On the fatigue behavior of low#0183;Low cycle fatigue tests were conducted on the samples of each microstructural zone of the weld joint at 550 On the fatigue behavior of low#176;C employing a constant strain amplitude of On the fatigue behavior of low#177;0.6% and strain rate of 3 On the fatigue behavior of low#215; 10 3 s 1.In the weld joints microstructures,the weld metal exhibits the lowest fatigue life,followed by the inter-critical (IC).Effect of Precompression Deformation on the Strain In this work,the effect of precompression along the extrusion direction on the strain-controlled low-cycle fatigue behavior of an extruded AZ31 magnesium alloy was investigated.After precompression deformation occurred,the tensile yield strength decreased,whereas the tensile yield strength and ultimate tensile strength increased gradually as precompression deformation increased.

Effect of Pre-Strain on the Fatigue Behavior of Extruded

The low-cycle fatigue lifetime of extruded AZ31 alloy can be enhanced by the pre-compression process.And the hysteresis energy was successfully used to predict the low-cycle fatigue lifetime. On the fatigue behavior of lowlt;P / On the fatigue behavior of lowgt; An attempt is made to rationalize the effect of pre-strain history on fatigue behaviors ofEffect of Low Velocity Impact Damage on the Fatigue This paper discusses an experimental program that addressed the effect of low-velocity impact damage on the fatigue behavior of two laminates,fabricated from AS/3501-6 graphite/epoxy unidirectional tapes,with lay-ups representative of high-performance fighter aircraft wing skin lay-ups.Effect of Local Recrystallized Grains on the Low Cycle This paper aims to understand the effect of local recrystallization (RX) on the low cycle fatigue fracture of a turbine-blade single crystal nickel-based superalloy.The fatigue life of the single crystal superalloy was evidently decreased by local recrystallization.In single crystal specimens,casting porosity is the preferential fatigue crack initiation site,which is followed by

Effect of Local Recrystallized Grains on the Low Cycle

In this study,the effects of local recrystallization on the low cycle fatigue behavior of a gas turbine single crystal superalloy were studied.Strain-controlled fatigue tests were performed on both the original SX and locally recrystallized SX samples to reveal the effects of recrystallization.Effect of High Strain Rate on Low-Cycle Fatigue Behavior Apr 26,2018 On the fatigue behavior of low#0183;This study aims to investigate the effects of strain rate on the low-cycle fatigue strength of steel welded joints.Load-carrying cruciform joints with different material mismatch ratios were fabricated in order to observe the effects of material mismatching.A series of displacements that generate low-cycle fatigue damage were applied to the specimens.Effect of -phase morphology on low-cycle fatigue behavior Jun 01,2015 On the fatigue behavior of low#0183;Low-cycle fatigue behavior of TC21 alloy with equiaxed phase embedded in the transformed matrix (EM) and full lamellar phase (LM) was investigated.The results show that the EM microstructure possesses higher strength,ductility and longer fatigue life than those of the LM one.

Effect of -ferrite on the low-cycle fatigue behavior of

Aug 01,2020 On the fatigue behavior of low#0183;Compared with the fatigue life of the 4DASS,it decreased by 33.9% and 13.1%,respectively,in the 10DASS and 1DASS at the total strain amplitude of 0.4%,and by 50.5% and 26.8% at the total strain amplitude of 0.8%.Meanwhile,the average fatigue lives of five test specimens at each test condition also accorded with this trend.Cycle Fatigue Behavior of a Nickel-Based Single Crystal Crystals 2019,9,312 2 of 12 that the low cycle fatigue life of a single crystal superalloy was remarkably reduced at 550 C by a 150 m recrystallized layer,up to an order of magnitude [2].Cited by 94Publish Year 2014Author S.M.Hassani-Gangaraj,A.Moridi,M.Guagliano,A.Ghidini,M.BoniardiEffect of anisotropy and texture on the low cycle fatigue @article{osti_1423081,title = {Effect of anisotropy and texture on the low cycle fatigue behavior of Inconel 718 processed via electron beam melting},author = {Kirka,Michael M.and Greeley,Duncan A.and Hawkins,Charles S.and Dehoff,Ryan R.},abstractNote = {Here in this study,the impact of texture (columnar/equiax grain structure) and influence of material orientation on the low cycle

Cited by 67Publish Year 2015Author Changsheng Tan,Xiangli Li,Qiaoyan Sun,Lin Xiao,Yongqing Zhao,Jun SunA Study on the Low Cycle Fatigue Behavior of the Steel for

Recently,most of fatigue cracks in ship structures are reported within a few years after delivery.This type of fatigue characteristics cannot be explained adequately by the S-N curve based on high cycle fatigue.Calculation results under critical loading conditions reveal that stress magnitude higher than three times the yield stress occurs at some critical locations.Cited by 3Publish Year 2019Author S.Weng,Y.H.Huang,F.Z.Xuan,S.L.ZhengRelated searches for On the fatigue behavior of lowlow energy fatigue in menfatigue low ironSome results are removed in response to a notice of local law requirement.For more information,please see here.12345NextThe effect of Zr on the low-cycle fatigue behavior of NiAl The effect of a 0.1 at.% alloying addition of Zr on the low-cycle fatigue behavior of polycrystalline NiAl was determined at 1000 K and compared to that of binary NiAl.Samples of binary NiAl and the Zr-doped alloy were processed by either HIP consolidation or extrusion of prealloyed intermetallic powders.The cyclic stress response,cyclic stress-strain behavior,and strain-life Cited by 3Publish Year 2019Author Donghyun Yoon,Inkang Heo,Jaehoon Kim,Sungyong Chang,Sungho ChangExtremely Low Cycle Fatigue Behavior of Additively Extremely low-cycle fatigue (ELCF) occurs during large plastic strain cycles; therefor all fatigue loading in this study was strain-controlled,with all specimens tested being cycled until failure.

Cited by 21Publish Year 1983Author RL RamkumarEnhanced Galvanic Corrosion Phenomenon in the Welded

Jul 09,2019 On the fatigue behavior of low#0183;During the low-cycle fatigue tests,cyclic softening takes place in the three zones (base metal,BM/weld metal,WM/heat affected zone,HAZ) of the welded joint due to the decrease of dislocation density or the formation of low-energy structures.Cited by 1Publish Year 2005Author Kyung Su Kim,Byung Ok Kim,Young Kwan Kim,Chang Hwan Lee,Sung Won LeeA Pilot Experimental Study on the Low Cycle Fatigue Low cycle fatigue is defined as a fatigue life of less than 10 5 cycles (Stephens et al.,2001) and little knowledge exists regarding the low-cycle fatigue behavior of stainless steel rebar.Author Zhe Liu,Song Zhang,Shuaihui Wang,Yawei Peng,Yawei Peng,Jianming Gong,Marcel A.J.SomersPublish Year 2020On the fatigue behavior of low-temperature gaseous A quantitative analysis of the effect on fatigue behavior forms the basis for a life prediction model,which can accurately predict the fatigue life of AISI316L steel after low temperature

Author Ye Da Lian,Li Qiang Gao,Qian Yin,Zhuang Zhuang Xu,Zhi Xun WenPublish Year 2021Temperature effect on the low-cycle fatigue behavior of

The low-cycle fatigue behavior of a high manganese austenitic alloy showing TWIP (Twinning-Induced Plasticity) in its homogenized as-received (AsRec) and in pre-strained conditions was determined Author Lin Wang,Yonghai Sun,Fucheng Zhang,Bo Lv,Chen Chen,Zhenwei WangPublish Year 2020Effects of environment on the low-cycle fatigue behavior The low-cycle fatigue behavior of Type 304 stainless steel has been investigated at 593/sup 0/C in a dynamic vacuum of better than 1.3 x 10/sup -6/ Pa (10/sup -8/ torr).The results concerning the effects of strain range,strain rate and tensile hold time on fatigue life are presented and compared Author K.Mariappan,Vani Shankar,A.K.BhaduriPublish Year 2020The effect of nitriding,severe shot peening and their May 01,2014 On the fatigue behavior of low#0183;Deterioration of surface durability during sliding rolling contact fatigue behavior of maraging steel subjected to nitriding and fine particle peening was also reported in the literature .Fernandez Pariente et al.[7] Investigated the effect of nitriding plus shot peening on fatigue strength of a low alloy steel specimens containing a micro

Author D.Z.Avery,W.T.King,P.G.Allison,J.B.JordonPublish Year 2020Low-Cycle Fatigue-Creep Interaction Behavior of GH4169

Effects of different loading and uninstalling and safe loading time on the low-cycle fatigue-creep interaction behavior of GH4169 superalloy at 650 On the fatigue behavior of low#176;C/850MPa have been investigated.The study found that under the safe loading time,with the longer the loading and unistalling time,the fatigue-creep property and life of this alloy were gradually improved.An assessment of cold work effects on strain-controlled The influence of prior cold work (PCW) on low-cycle fatigue (LCF) behavior of type 304 stainless steel has been studied at 300,823,923,and 1023 K by conducting total axial strain-controlled tests in solution annealed (SA,0 pct PCW) condition and on specimens having three levels of PCW,namely,10,20,and 30 pct.A triangular waveform with a constant frequency of 0.1 Hz was employed for A Study on the Low Cycle Fatigue Behavior of the Steel for It shows the fatigue cracks are related to low cycle fatigue.But the existing recommended design procedures in maritime industry do not properly cover low cycle fatigue problems.This work represents the first step in an effort to develop a design code that addresses low cycle fatigue problems.

(PDF) Temperature effect on low-cycle fatigue behavior of

The cyclic deformation behavior and low-cycle fatigue (LCF) failure of u0002 precipitation-hardened nickel base superalloys is strongly inuenced by temperature [610],frequency [5,1113],strain rate,crystallographic orientation [14,15] and environment etc.Tension-compression asymmetry of the cyclic hardening or softening has been observed in nickel base single crystal superalloys [610].(PDF) EFFECT OF COLD ROLLING ON LOW CYCLE FATIGUEDual slope in Coffin-Manson (C-M) relationship was observed by Singh et al [4] and was The low cycle fatigue behavior has been analyzed in terms of established to be associated with planarity of slip and its role in cyclic stress response and cyclic strain life relation and the promoting crack initiation,at low strain amplitudes.(PDF) A comparative study of low cycle fatigue behavior At room temperature,the steady fatigue behavior until 80% fatigue life was presented,by contrast,great changes were offered below 80% fatigue life at 630 On the fatigue behavior of low#176;C.this is directly related to the

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