淬火温度对X80管线钢组织和力学性能的影响  

Quenching Temperature's Impact on the Microstructure and Mechanical Properties of X80 Pipeline Steel

作　　者：马永杰[1] 龙晔君 马红梅[1] 

机构地区：[1]商丘职业技术学院机电工程系,河南商丘476000 [2]郑州工业贸易学校,郑州450007

出　　处：《河南科学》2013年第4期449-452,共4页Henan Science

基　　金：河南省科技攻关项目资助(2010334508)

摘　　要：研究了X80钢在不同淬火温度后的组织和力学性能的变化.结果表明,淬火温度为1000℃时,X80钢的奥氏体晶粒严重粗化,导致粗板条贝氏体铁素体的产生,致使X80钢的强度升高、韧性和硬度严重降低;当淬火温度为930℃,并辅以适当的回火处理,可以使X80钢获得以细小针状铁素体为主的组织,从而获得良好的硬度、强度、塑性和韧性的配合.The mechanical properties＇ changes of X80 steel at different quenching temperature were studied. Theresults showed that when the quenching temperature is 1000℃, X80 Austenite grain coarsening is serious, leading to the production of coarse lath bainite ferrite, the increased strength of X80 steel, and a serious reduction of toughness and hardness. When the quenching temperature is 930 ℃, and assisted by the appropriate temperatures, the smallneedle-like ferrite-based organizations of XSO steel can be maked,to obtain good match of hardness, strength, ductility and toughness.

关 键 词：淬火 X80管线钢 组织 力学性能 

分 类 号：TG254[金属学及工艺—铸造]