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Abstract：
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The stress-strain curves for TC6 titanium alloy at the deformation temperature of 860-950℃,strain rate of 0.01-50s-1,the deformation degree of 30% and 50% were obtained through Gleeble-3500 thermal simulation testing machine.The discipline of TC6 microstructure evolution in the experimental conditions was researched through and the dynamic recrystallization model of α-phase plastic during the(α + β) field deformation process was established.The results show that at low strain rate deformation,the dynamic recovery process of TC6 titanium alloy is relatively enhanced and dynamic recrystallization is inhibited;at the same temperature and different strain rate,the microstructure pattern is basically identical congruent,however,with the increasing of the strain rate,the degree of recrystallization increases and the microstructure refines.The average error value is smalller than 13% by comparing the calculated values and measured values.
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[1]尼克里斯基ЛА.钛合金的模锻与挤压[M].陈石卿,焦明山,译.北京:国防工业出版社,1982.
[2]索朗宁娜OП,格拉祖诺夫CΓ.热强钛合金[M].张志方,葛志明,译.北京:第三机械工业部第六二一研究所,1976.
[3]Sellars C M,Whiteman J A.Recrystallization and graingrowthin hot rolling[J].Materials Science,1979,3:187-194.
[4]Yada Senuma T.Resistance to hot deformation of steel[J].J JSTP,1986,27:33-44.
[5]Kopp R,Karnhausen K,De Souza M M.Numerical simula-tion method for designing thermomechanical treatment illus-trated by bar rolling scand[J].J.Metal.,1991,20:351-363.
[6]Satio Y.Modeling of microstructural evolution in thermome-chanical processing of structural steels[J].Materials Scienceand Technology,1997,233:134-145.
[7]Lin J,Liu Y.A set of unified constitutive equations for model-ling microstructure evolution in hot deformation[J].Journal ofMaterial Processing Technology,2003,143-144:281-285.
[8]Pietrzyk M.Through-process modelling of microstructure e-volution in hot forming of steels[J].Journal of Material Pro-cessing Technology,2002,125-126:53-62.
[9]Dunne F P E,Katramados I.Micro-mechanical modeling ofstrain induced porosity under generally compressive stressstates[J].International Journal of Plasticity,1998,14(7):577-595.
[10]Li M,Liu X,Xiong A,et al.Modeling of microstructureduring hot working process by ANN[A].Jiang Z.Proceed-ings of the International Conference Advanced ManufacturingTechnology[C].New York:Science Press,1999:1342-1345.
[11]陈胜辉.基于微观组织演变的钛合金本构关系模型及应用[D].西安:西北工业大学,2004.
[12]唐泽,杨合,孙志超,等.TA15钛合金高温变形微观组织演变分析与数值模拟[J].中国有色金属学报,2008,18(4):722-727.
[13]郭生武,吴会平,程羽,等.Co40NiCrMo合金本构关系的建立[J].锻压技术,2008,33(1):152-157.
[14]窦晓峰,鹿守理,赵辉.Q235钢动态再结晶模型的建立[J].北京科技大学学报,1998,20(5):467-470.
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