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effects of microstructure and yield ratio on strain

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results for this questionFeedbackEffects of microstructure and yield ratio on strain

Aug 15,2012·Swift and Hollomon expressed the yield ratio obtained from tensile tests as a function of proprietary material constants ,and explained the microstructural requirements for low yield ratio as follows (1) Yield ratio = [ln (1 + b + e y)] N exp (N b) (1 + e y) N N where b refers to material constant,e y to elongation at the time of yielding,and N to strain hardening exponent,among which b and N are controllable variables to decrease the yield ratio. results for this questionHow are processing conditions related to tensile strength?How are processing conditions related to tensile strength?The relationship between processing conditions,microstructure,and tensile strength was established.Fracture surface of the weld line exhibited skin-core morphology with different degrees of talc particle orientations in the core and in the skin.Effect of Melt Temperature and Hold Pressure on the Weld results for this questionWhat is the relationship between yield stress and grain size?What is the relationship between yield stress and grain size?A classical Hall-Petch relationship was exhibited between the yield stress and grain size.The residual stress depended on crystal orientation.The residual stress as-deposited was of tension and decreased with decreasing of (111) orientation.The ratio of texture coefficient of (111)/ (220) can be used as a merit for the state of residual stress.Effect of Annealing on Microstructure and Mechanical

results for this questionWhy does alcocr 0.3 Feni have a high fracture strain?Why does alcocr 0.3 Feni have a high fracture strain?AlCoCr 0.3 FeNi,AlCoCr 0.5 FeNi,and AlCoCr 0.7 FeNi exhibit a high compressive fracture strain of about 0.24 because of the formation of the FCC phase in the BCC matrix.Moreover,the highest yield stress of 1394MPa and compressive strength of 1841MPa presented by AlCoCrFeNi alloy are due to the existence of a nano-net-like spinodal structure.Effects of Cr Content on Microstructure and Mechanical Properties of AlCoCrxFeNi High-Entropy AlloyAbstract.In the present study,effects of microstructure and yield ratio on strain hardening and Bauschinger effect were investigated in two API X80 steel sheets fabricated by controlling the start cooling temperature.The steel whose start cooling temperature was lower had the higher fractions of granular bainite (GB) and martensiteaustenite (MA) constituent and the lower fraction of acicular ferrite (AF),and showed the higher yield ratio.Author:Seung Youb Han,Seok Su Sohn,Sang Yong Shin,Jin Ho Bae,Hyoung Seop Kim,Sunghak LeeCited by:31Publish Year:2012Effects of microstructure and yield ratio on strain

Was this helpful?People also askHow does the minimization of energy affect microstructure?How does the minimization of energy affect microstructure?The minimization of energy including surface energy,interface energy,and strain energy (elastic strain energy and plastic strain energy) controlled the microstructural evolution.A classical Hall-Petch relationship was exhibited between the yield stress and grain size.The residual stress depended on crystal orientation.Effect of Annealing on Microstructure and Mechanical Author Chengjiang Lin,Di TangPublish Year 2019Effect of the Strain Rate on Mechanical Properties and The mechanical properties and microstructure of the high strength low alloy HC340LA were obtained with different strain rate.The research shows that the better plasticity,higher tensile strength and yield ratio can be found in high speed tensile state than in quasi-static tension.The plasticity and tensile strength decrease with the increasing of the strain rate during the high speed tension.

Author Hongge Yan,Qin Wu,Jihua Chen,Weijun Xia,Min Song,Bin Su,Biao HuangEstimated Reading Time 10 minsPublish Year 2020Effects of strain rate on mechanical properties

Jan 01,2020·The results show that strain rate has some influences on the mechanical properties and microstructure,but a slight influence on the texture.Overall,yield strength,ultimate tensile strength and elongation increase first,then remain unchanged,and finally increase with increasing strain rate.Cited by 16Publish Year 2015Author Shengci Li,Yonglin Kang,Guoming Zhu,Shuang KuangEstimated Reading Time 11 minsEffects of Grain Coarsening on Local Stresses Strainssimulate the effects of microstructure coarsening on the stresses and strains within the solder microstructure.The actual stress and strain state of the microstructure is far more complex than the elastic model used in this study.However,from the elastic model,we can calculate von mises stresses.Von mises stresses provide yield criteria,i.e.Cited by 18Publish Year 2013Author Seok Su Sohn,Seung Youb Han,Jin ho Bae,Hyoung Seop Kim,Sunghak LeeEffect of Strain Rate on the Microstructure and Texture Oct 03,2020·The tensile strength (UTS) and yield strength (YS) increases firstly and then decreases,while the elongation (EL) gradually increases with increasing the strain rate,and the optimal comprehensive mechanical properties are obtained at 10 s1,with UTS of

Cited by 18Publish Year 2013Author Seok Su Sohn,Seung Youb Han,Jin ho Bae,Hyoung Seop Kim,Sunghak LeeEffects of microstructure and pipe forming strain on yield

The overall yield strength after spiral piping was defined by the competing effect of the strain hardening and the Bauschinger effect.The competing effects depended on the microstructure and the pipe forming strains.Cited by 1Publish Year 2020Author Yan-hua Li,Qiang Chi,Hui Feng,Hong-yuan Chen,Xiao-feng XuEffect of volume fraction of bainite on strain hardening Jul 25,2018·The effect of tensile strength ,microstructure ,volume fraction of phase ,buckling strain ,,strain hardening exponent on yield ratio have been extensively studied.The effect of volume fraction of phase on the strain hardening exponent [5] ,[10] ,[11]Cited by 1Publish Year 2021Author Shuai Wang,Wei-jian Chen,Zheng-zhi Zhao,Xiao-long Zhao,Xiao-yang Luo,Qiang WangEstimated Reading Time 12 minsThe effect of microstructure and processing variables on The effect of cooling rate on the yield strength,the ultimate tensile strength and their ratio of the Mo-free line pipe steel is shown in Fig.5(a).Both the yield strength and ultimate tensile strength increase with increasing cooling rate after soaking at 980 °C.The microstructures also changed with cooling rate with polygonal ferrite (PF)

Cited by 20Publish Year 2018Author C.J.Tang,C.J.Shang,S.L.Liu,H.L.Guan,R.D.K.Misra,Y.B.ChenEffect of annealing on microstructure and properties of Er

Sep 01,2018·The results showed that,when the annealing temperature is between 340 °C and 360 °C,the tensile strength and yield strength of the 5052 + Er alloy have a large decline while the elongation increase obviously; The recrystallization starting temperature of the alloy is 320 °C,and recrystallization ending temperature is 320 °C; The average strength ratio of the 5052 + Er alloy with 360 °C annealing for 2 h is 0.592,when the average strainCited by 31Publish Year 2012Author Seung Youb Han,Seok Su Sohn,Sang Yong Shin,Jin Ho Bae,Hyoung Seop Kim,Sunghak LeeEffects of microstructure and pipe forming strain on yield Jun 20,2013·During the forming,outer and inner walls of pipes are subjected to different strains,i.e.,tensile strains on the outer wall and compressive strains on the inner wall,which also varied with pipe forming strain of thickness/diameter (t/D) ratio and the thickness position of the sheet.According to this strain history,sheets flattened from pipes often show the lower yield strength than original sheets,which leads to uncertainties of supplying linepipe steels satisfying the yieldCited by 31Publish Year 2012Author Seung Youb Han,Seok Su Sohn,Sang Yong Shin,Jin Ho Bae,Hyoung Seop Kim,Sunghak LeeEffects of microstructure and yield ratio on strain The steel whose start cooling temperature was lower had the higher fractions of granular bainite (GB) and martensite-austenite (MA) constituent and the lower fraction of acicular ferrite (AF),and showed the higher yield ratio.According to the results of the strain-reversal test composed of compressive and tensile tests at various compressive pre-strains,the reduction in yield strength of the steel having

Cited by 31Publish Year 2012Author Seung Youb Han,Seok Su Sohn,Sang Yong Shin,Jin Ho Bae,Hyoung Seop Kim,Sunghak LeeEffects of microstructure and yield ratio on strain

The steel whose start cooling temperature was lower had the higher fractions of granular bainite (GB) and martensiteaustenite (MA) constituent and the lower fraction of acicular ferrite (AF),and showed the higher yield ratio.According to the results of the strain-reversal test composed of compressive and tensile tests at various compressive pre-strains,the reduction in yield strength of the steel havingCited by 61Publish Year 2017Author Chen Ruirun,Zheng Deshuang,Ma Tengfei,Ding Hongsheng,Su Yanqing,Guo Jingjie,Fu HengzhiPAPER OPEN ACCESS Effect of microstructure andApr 27,2020·Mechanical properties of materials such as elasticity modulus,yield strength,yield ratio and strain hardening index all have influence on springback [1-2].As is well known,the unloading elastic strain can be calculated by the ratio between the unloading stress and the elasticity modulus.Cited by 8Publish Year 2009Author Qiao Zhi-Tian,SA Qiang-Wu,WU Hui-BinEffect of Hot Rolling Process on Microstructure and Aug 27,2010·Addition of boron has resulted in coarse grain microstructure and dramatic improvement of the formability properties as measured by YS,yield to tensile strength ratio,ductility,and SAI value.6.Strain aging makes the steel embrittle.Boron-treated steel with very low SAI value has shown minimal drop in CVN impact energy after strain aging.

Cited by 8Publish Year 2020Author Wensen Huang,Jihua Chen,Hongge Yan,Weijun Xia,Bin Su,Weijun ZhuEstimated Reading Time 11 minsStrain-path effects on the evolution of microstructure and

The material exhibited a four- fold increase in the yield strength and a rapid saturation in strain hardening that led to a pronounced peak at small strains (less than 0.1).Moreover,the ow curves showed a greater dependence on test direction (ED vs ND) after route CDetermining role of heterogeneous microstructure in May 06,2021·Here we present a novel approach of intercritical heat treatment for microstructure tailoring,in which intercritical annealing is introduced between conventional quenching and tempering.This induced a heterogeneous microstructure consisting of soft intercritical ferrite and hard tempered martensite,resulting in a low yield ratio (YR) and high impact toughness in a high-strength low-alloyEFFECTS OF COOLING PROCESS AFTER ROLLING ONThe influence of cooling process on microstructure of high-strain pipeline steel X80 with its low yield ratio has been examined by SEM and in situ TEM.The results illustrate that ferrite+bainite dual phase structure is obtained after proper relaxation and chilling down process,while the terminate temperature of relaxation is the decisive factor.When the stop temperature for relaxation ranges from 690 to

Effect of Annealing on Microstructure and Mechanical

AbstractIntroductionExperimental DetailsResults and DiscussionConclusionsAcknowledgmentsCu thin films were deposited on Si substrates using direct current (DC) magnetron sputtering.Microstructure evolution and mechanical properties of Cu thin films with different annealing temperatures were investigated by atomic force microscopy (AFM),X-ray diffraction (XRD),and nanoindentation.The surface morphology,roughness,and grain size of the Cu films were characterized by AFM.The minimization of energy including surface energy,interface energy,and strain energy (elastic straiSee more on hindawiCited by 28Publish Year 2015Author Shiwen Du,Yongtang LiEffects of Strain Rate and Annealing Temperature on the Aug 22,2019·The evolution of microstructure and texture was investigated during deformation and recrystallization processes in pure polycrystalline niobium.Optical microstructure,X-ray diffraction,transmission electron microscopy,and electron back-scattered diffraction analyses revealed variant behaviors during deformation and recrystallization; herein,the niobium was compressed under 0.01,Effect of Zr on microstructure and high- mechanicalEffect of Zr on microstructure and high-temperature mechanical properties of yield stress (R e) and the ratio R e /R m were analysed by MATLAB software.For both steels,yield stress and tensile the sensitivity of the steel to increase of strain rate through the .R e /R m ratio,which is completely .Effect of microstructure evolution on Lüders strain and Oct 04,2020·With respect to the dependence of Lüders strain in these three samples,it seems that either increased IA temperature or lower cold rolling ratio can lessen YPE and yield drop.Interestingly,the engineering stress of CR65-590 samples rises approximately 100 MPa rather than maintaining commonly invariable during YPE,showing a good accordance with relevant work hardening rate

Effect of strain aging on properties of X90 line pipe

Results indicate that the yield strength and yield ratio of X90 pipeline steels increase significantly after strain aging,while the impact toughness and tensile strength show little correlation with strain aging.Moreover,the impact toughness decreases after 200 °C,5 min aging,however,it rises with the increase of aging temperature and aging time.Effects of Cu/Mg ratio on microstructure andThe effects of Cu/Mg ratio on the microstructure,mechanical properties and corrosion behavior of the AA7085 alloys were the increase in yield strength of AlZnMgCu alloy is temperature and a strain rate of about 1×104 s1 on an Instron8082 testing machine.The exfoliation corrosion testing (EXCO-testing) was carried out Effects of Ga Content on Dynamic Recrystallization and Jul 22,2019·Effects of Ga content on microstructure,dynamic recrystallization (DRX) and mechanical properties of the Mg-Ga alloys prepared by high strain rate rolling (HSRR) are systematically studied.Among all the alloys,the HSRRed Mg-2Ga alloy exhibits the smallest DRX critical strain,an ultrahigh plasticity ( up to 36.6%) and a low anisotropy of yield strength and plasticity,due to the complete DRX.

Effects of Strain Rates on Mechanical Properties and

Apr 03,2015·The results showed that the strain rate sensitivity of yield strength is bigger than that of ultimate tensile strength; as strain rate increased,the formation of microcracks and voids at the ferrite/martensite interface can be alleviated; the strain rate effect is unevenly distributed in the plastic deformation region.Effects of coiling temperature and pipe-forming strain on In this study,effects of microstructure and pipe-forming strain (thickness/diameter (t/D)) on yield strength variation were investigated in X70 (483 MPa) and X80 (552 MPa) linepipe steels fabricated by controlling Mo content and coiling temperature,and their yield strength,strain hardening exponent,and Bauschinger stress parameter were measured by tension-compression tests with varying tensile-pre-strain.Effects of ultrasonic vibration on the microstructure and Jan 24,2017·The microhardness and yield strength are gradually improved by 23.72% and 181.88% due to the fine grain strengthening,while the compressive strength is

Some results are removed in response to a notice of local law requirement.For more information,please see here.12345NextStress and Strain Distributions During Compressive

microstructural conditions,and to analyse the quantitative effects of plate length/width ratio,crack,and phase boundaries on micro stress and strain distributions during compression deformation.Exploring and evaluating the possible effects of microstructure on the mechanical properties of titanium alloys areYield Strength - tppinfo2.4 Effect of microstructure on the YS difference.Mechanical properties of steel are closely related with its microstructure.It is estimated that the possible microstructure for AISI 4140 material quenched in oil was composed of bainite along with martensite for the low yield

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