Comparison of warm deformation behavior between quenched and annealed ASTM 1045 steel
The warm deformation behavior of as-quenched and as-annealed ASTM 1045 steel was studied by isothermal compression testing on a Gleeble3500 machine. The temperature range was 550-700 C and the strain rate range 0.001-0.1s -1. Transmission electron microscopy (TEM) was used to study the microstructures associated with the observed deformation phenomenons. The results show that the flow stress of quenched specimens is higher than that of annealed ones at 550 C when strain rates are greater than 0.001s -1. However, at 600-700 C and strain rate of 0.001s -1 , the whole flow curves of quenched specimens are below that of annealed ones. Under the rest conditions, the flow stress of quenched specimens is higher at the beginning of compression and then the opposite is true after the strain is greater than a critical value. The microstructure examination proves that the dynamic recrystallization easily occurs in quenched specimens during warm compression, which results in the above phenomenons.
ZHAO Xin YANG Xiaoling JING Tianfu
The Six Department, Zhengzhou Institute of Aeronautics Zhengzhou 450015, China Zhengzhou Zhongxing Basic Constructions Development Co., Ltd Zhengzhou 450015, China State Key Lab.of Metastable Materials Science and Technology, Qinhuangdao 066004, China
国际会议
桂林
英文
1-4
2010-11-16（万方平台首次上网日期，不代表论文的发表时间）