Metadynamic Recrystallization Behavior of As-cast 904L Superaustenitic Stainless Steel

被引:0
|
作者
Wei ZHANG [1 ]
Jing ZHANG [2 ]
Ying HAN [1 ,3 ]
Rong LIU [4 ]
De-ning ZOU [4 ]
Guan-jun QIAO [1 ]
机构
[1] State Key Laboratory for Mechanical Behavior of Materials,Xi′an Jiaotong University
[2] State Key Laboratory of Solidification Processing,Northwestern Polytechnical University
[3] Key Laboratory of Advanced Structural Materials of Ministry of Education,Changchun University of Technology
[4] School of Metallurgy and Engineering,Xi′an University of Architecture and Technology
基金
中国国家自然科学基金;
关键词
superaustenitic stainless steel; hot deformation; metadynamic recrystallization;
D O I
暂无
中图分类号
TG142.71 [不锈钢、耐酸钢];
学科分类号
080502 ;
摘要
The metadynamic recrystallization(MDRX)behavior of as-cast 904 Lsuperaustenitic stainless steel was investigated by double pass isothermal compression tests at temperatures of 950-1 150℃,strain rates of 0.05-5s;and interval of 1-100 s.The effects of working parameters(deformation temperature,strain rate,pre-strain and interval time)on the flow curves and microstructural evolution were discussed.The MDRX fraction increased obviously with the increase of deformation temperature,strain rate and interval time.The MDRX softening was controlled by the migration of grain boundary,annihilation of dislocation and dynamic recrystallization.Moreover,the kinetic model was established for the prediction of MDRX behavior of as-cast 904 Lsuperaustenitic stainless steel based on the experimental data.A good agreement between the predicted and the experimental values was achieved(correlation coefficient R;=0.98),indicating a satisfactory accuracy.
引用
收藏
页码:151 / 159
页数:9
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