回火温度对连续油管用钢组织与力学性能的影响  

Effect of Tempering Temperature on Microstructure and Mechanical Properties of Coiled Tubing Steel

作　　者：李四军[1] 张振栋[2] 周海涛[3] 张冰毓[2] 刘相华[2] 刘克明[3] 

机构地区：[1]莱芜钢铁集团有限公司技术研发中心,山东莱芜271104 [2]东北大学材料与冶金学院研究院,辽宁沈阳110819 [3]中南大学材料科学与工程学院,湖南长沙410083

出　　处：《热处理技术与装备》2013年第1期17-20,共4页Heat Treatment Technology and Equipment

摘　　要：对CT80连续油管用钢进行不同温度回火热处理,研究了回火温度对其显微组织与力学性能的影响。结果表明:不同回火温度下实验钢的显微组织主要为铁素体、回火索氏体和残留奥氏体;随回火温度的升高,显微组织中带状组织越明显,实验钢的屈服强度和抗拉强度呈下降趋势,延伸率逐渐升高,屈强比明显增加。After the coiled tubing steel is tempered in different temperature, the influence of tempering temperatures on the microstructure and mechanical properties of the steel is studied. The results indicate that the microstructure of the coiled tubing steel consistes of ferrite, tempered sorbite and retained austen- ite. With tempering temperature increasing, the banded structure is more obvious, the yield strength and tensile strength are lower, the elongation is higher, and the yield ratio is increased.

关 键 词：回火温度 连续油管用钢 显微组织 力学性能 

分 类 号：TG156.5[金属学及工艺—热处理]