Transactions of Materials and Heat Treatment

Title：Influences of process parameters in plane strain compression on microstructure and property for 06Cr19Ni9NbN steel

Authors： Jiao Yongxing Liu Jiansheng Xu Yue Li Jingdan Zheng Xiaohua Jia Xiaobin Bai Yongqing

Unit： Taiyuan University of Science and Technology

KeyWords： plane strain compression 06Cr19Ni9NbN steel microstructure mechanical property dynamic recrystallization

ClassificationCode：TG316

year,vol(issue):pagenumber：2018,43(10):157-162

Abstract：

The tests of plane strain compression for 06Cr19Ni9NbN steel were conducted under the deformation temperatures of 1000,1100 and 1200 ℃, and the tensile tests at room temperature were conducted after compression. Then, the influences of different deformation ratios and different deformation temperatures on the microstructure evolution and mechanical properties of the material were studied by the optical microscope (OM) and DEFORM simulation. The results show that during the process of plane strain compression, the greater the deformation amount is, the more fully the dynamic recrystallization occurs, and the smaller the grain size is. With the increasing of deformation temperature, the volume fraction of dynamic recrystallization increases, and the simulation results are agreed with the experiment results to verify the accuracy of simulation results. Furthermore, the elongation, area reduction, yield strength and tensile strength of material increase with the increasing of volume fraction of dynamic recrystallization and the decreasing of grain size.

Funds：

国家自然科学基金资助项目(51275330，51775361)

焦永星(1988-)，男，博士研究生，E-mail：jiaoyxtust@163.com；通讯作者：刘建生(1958-)，男，博士，教授，博士生导师，E-mail:jiansliu@163.com

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