热处理工艺对X100管线用无缝钢管组织性能的影响  

Influence by Heat Treatment on Microstructure and Properties of X100 Seamless Steel Linepipe

作　　者：黄电源[1] 张轶伦[1] 昝启飞 

机构地区：[1]衡阳华菱钢管有限公司,湖南衡阳421001

出　　处：《钢管》2016年第4期23-26,共4页Steel Pipe

摘　　要：采用不同淬火和回火工艺,进行X100钢级管线用无缝钢管的系列热处理试验,研究淬火温度和回火温度对其组织性能的影响。试验结果表明:X100钢级管线用无缝钢管在930℃淬火时能够完全奥氏体化,并获得针状铁素体和板条贝氏体组织;随着回火温度的变化,试验管的组织和性能呈一定规律;采用930℃淬火+620℃回火热处理工艺,试验管可获得晶粒细小且分布均匀的针状铁素体,综合性能最佳。A series of heat treatment tests are conducted to the X100 seamless steel linepipe via different quen- ching and tempering processes in a bid to study the influence by quenching and tempering temperatures on the microstructure and properties thereof. The test results show that the said pipe can be fully austenitized, and both the acicular ferrite and lath bainite structures can be obtained as well when the quenching temperatures reaches at 930℃ and above. Along with the change of the tempering temperature, the microstructure and properties of the X100 steel pipe as tested present certain regularities. After quenched at 930℃ and tempered at 620℃, acicular ferrites as in fine grains and uniformly distributed are obtained in the tested pipe, and the pipe also has the best comprehensive performance.

关 键 词：管线用无缝钢管 X100钢级 淬火 回火 组织 性能 针状铁素体 

分 类 号：TG142.1[一般工业技术—材料科学与工程] TG162.84[金属学及工艺—金属材料]