Study on Dynamic Recovery/Recrystallization Constitutive Behaviors of Alloy IC10

China Mechanical Engineering

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Study on Dynamic Recovery/Recrystallization Constitutive Behaviors of Alloy IC10

ZHANG Hongjian1;WEN Weidong1,2;CUI Haitao1;XIAO Jianfeng1

1.Jiangsu Province Key Laboratory of Aerospace Power System,Nanjing University of Aeronautics and Astronautics,Nanjing,210016
2.State Key Laboratory of Mechanics and Control of Mechanical Structures,Nanjing University of Aeronautics and Astronautics,Nanjing,210016

Online:2017-09-25 Published:2017-09-22
Supported by:
National Natural Science Foundation of China （No. 51205190）
Fundamental Research Funds for the Central Universities（No. NS2016026）

IC10合金的动态回复/再结晶本构行为研究

张宏建1;温卫东1,2;崔海涛1;肖健峰1

1.南京航空航天大学江苏省航空动力系统重点实验室，南京，210016
2.南京航空航天大学机械结构强度与振动国家重点实验室, 南京，210016

基金资助:
国家自然科学基金资助项目（51205190）；
中央高校基本科研业务费专项资金资助项目（NS2016026）
National Natural Science Foundation of China （No. 51205190）
Fundamental Research Funds for the Central Universities（No. NS2016026）

Abstract

Abstract: Various tensile experiments were conducted over the temperature range of 1073~1373K at different strain rates. Experimental results show: dynamic recovery is the dominate behavior at 1073K, and the dominate behavior over the temperature range of 1173~1373K is dynamic recrystallization. The behavior mechanism was studied by transmission electron microscope(TEM) tests. And the observation results show: there are both edge and screw dislocations on the cube plane, and these dislocations have a tendency to form the subgrains at the interphase boundaries of γ′, which is the dominate mechanism of recrystallization behaviors. At last, Sellars model, a most widely used macro constitutive model, was used to predict the flow behaviors of alloy IC10 over the temperature ranges from 1073 to 1373K and under different strain rates. The predicted data fits well with the experimental ones, and the average relative errors at various conditions are less than 5%.

Key words: alloy IC10, dynamic recovery, dynamic recrystallization, constitutive equation, micro mechanism

摘要： 对IC10合金在1073~1373K范围内、不同应变率下开展了拉伸试验研究，试验结果表明：IC10合金在1073K附近表现出明显的动态回复力学特征，在1173~1373K范围内则表现出明显的动态再结晶特征。通过透射电子显微镜对试验样品进行观察，研究了IC10合金变形机理，结果表明，在1073~1373K范围内，IC10合金变形过程中螺位错和刃位错可动性相当，并在γ′相边界逐步形成一些胞状亚晶结构。最后，将工程中应用广泛的Sellars模型应用于描述IC10合金在1073~1373K范围内、不同应变率下的力学行为，预测结果与试验结果的平均相对误差值不超过5%。

关键词: IC10合金, 动态回复, 动态再结晶, 本构模型, 细观机理

CLC Number:

TB35
V252

ZHANG Hongjian1;WEN Weidong1,2;CUI Haitao1;XIAO Jianfeng1. Study on Dynamic Recovery/Recrystallization Constitutive Behaviors of Alloy IC10[J]. China Mechanical Engineering.

张宏建1;温卫东1,2;崔海涛1;肖健峰1. IC10合金的动态回复/再结晶本构行为研究[J]. 中国机械工程.

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Study on Dynamic Recovery/Recrystallization Constitutive Behaviors of Alloy IC10

IC10合金的动态回复/再结晶本构行为研究

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