Transactions of Materials and Heat Treatment

Title：Study on compressed thermal deformation behavior and critical damage value of stainless steel 316L

Authors： Liu Guanghui Liu Hua Wang Weiqin Zhang Yishuai

Unit： Zhengzhou Research Institute of Mechanical Engineering

KeyWords： stainless steel 316L Deform-3D compressed thermal deformation critical damage value

ClassificationCode：TG314.3

year,vol(issue):pagenumber：2016,41(2):118-123

Abstract：

The mecheanical properties of materials in Deform-3D material library are quite different from that in actual production. A big error will occur when the mechanical properties were applied directly to the simulation. According to the experimental data, simulation was realized, the results would be more accurate and closer to production. For stainless steel 316L, the compress test at high temperature was carried out by Gleeble-1500D simulation testing machine. The influences of temperature and strain rate on the mechanical properties of stainless steel 316L at high temperature were analyzed. The thermal compression process of stainless steel 316L was simulated by the mechanical properties data in material library and the experimental data respectively. Under the two cases, the stroke-load curves and stress distributions were analyzed, and the critical damage values of stainless steel 316L were analyzed according to the experimental data. The results show that the thermal deformation resistance decreases with the increase of deformation temperature at a constant of strain rate, and the deformation resistance increases with the increase of strain rate at a constant of deformation temperature. Furthermore, the critical damage value of stainless steel 316L with strain rate of 0.25 s-1 is within the range of 0.1604-0.2369.

Funds：

科技部科研院所技术开发研究专项资助项目“汽车转向螺母多向联动精确成形及设备”(2013EG119106)

刘光辉(1989-)，男，硕士研究生刘华（1962-），男，博士，博士生导师，研究员

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