20SiMnTi钢亚温淬火工艺研究  

Study on Subthermal Quenching Technology for 20SiMnTi Steel

作　　者：王国顺[1] 符蓉[1] 

机构地区：[1]大连铁道学院机械工程系,辽宁大连116028

出　　处：《热加工工艺》2004年第7期16-17,共2页Hot Working Technology

摘　　要：研究了20SiMnTi钢的亚温淬火工艺,结果表明,采用"940℃预淬火+780℃亚温淬火+250℃回火"工艺,可使材料得到良好的强塑性配合,抗拉强度达950MPa,屈服强度达920MPa,伸长率为20%,断面收缩率为53.4%。The subthermal quenching technology of 20SiMnTi steel was studied.The results show that the process of pre-hardening at 940℃ and intercritical hardening at 780℃ and tempering at 250℃　can improves the coordination between strength and ductility;the tensile strength may reach 950 MPa,and the yield strength 920 MPa while the elongation is 20% and fracture contraction is 53.4%.

关 键 词：亚温淬火 强度 塑性 

分 类 号：TG156.31[金属学及工艺—热处理]