Hot deformation behaviors and mathematical model of Nb microalloyed Si-Cr spring steel
The true stress-strain curves under different deformation conditions for Nb microalloyed Si-Cr spring steel were measured by Gleeble- 3800 simulator,and the dynamic recrystallization (DRX)behaviors under hot deformation conditions were studied.The mathematical model of Zener-Hollomon parameter with the hot deformation activation energy Q,the peak stress σp,the peak strain εp,the recrystallized grain size of austenite dd were established based on the experimental data,respectively,Q = 309 kJ/mol,σp = 25.44 lnZ-628.3,εp = 0.1568Z0.027,dd = 2.547 × 103Z-0.162.
spring steel hot deformation stress-strain curve dynamic recrystallization
Zhu Yanguo Yin Jiang
Special Steel Branch,Baoshan Iron & Steel Co.,Ltd.Shanghai 200940,China
国际会议
上海
英文
854-858
2008-09-26（万方平台首次上网日期，不代表论文的发表时间）