Simulated Research on Hot Forming Mechanism of Sour Service Drill Pipe Steel
The dynamic mechanical behaviors of as-cast sour service drill pipe steel under development during hot deformation were studied in this paper by using Gleeble-3500 thermal-mechanical simulator. The compressions were carried out at the temperature of 900 ℃ 1000 , 1100 , 1200 ℃℃℃ and strain rates of 10s -1 , 1s -1 and 0.1s -1. The compress degree was about 70%, and then the maximum true strain for each specimen was 1.2. The experimental results show that the peak stress was related to the compression temperatures and the strain rates. Through respectively analyzing and studying the true stress-true strain curves, the hot deformation constitutive equation and the deformation activation energy were obtained by regression analysis. The evolution of microstructures at various strain rates and temperatures was discussed. Experimental results can provide scientific basis for analyzing the hot deformation processes and controlling quality.
HU Meijuan WANG Peng HAN Lihong HAN Xinli
CNPC Tubular Goods Research Institute, Xi’an 710065, China
国际会议
桂林
英文
1-6
2010-11-16（万方平台首次上网日期，不代表论文的发表时间）