调整热处理工艺保证25MnV钢石油套管质量  

Adjustment of Heat Treatment Process for the Quantity of 25MnV Steel Oil Casing

作　　者：胡双开[1] 唐明华[2,3] 刘志义[3] 

机构地区：[1]湖南衡阳华菱钢管有限公司质量管理部,湖南衡阳421001 [2]湖南工学院机械工程系,湖南衡阳421002 [3]中南大学材料科学与工程学院,湖南长沙410083

出　　处：《中国冶金》2011年第7期33-36,共4页China Metallurgy

基　　金：湖南省自然科学衡阳联合基金项目(10JJ9022)

摘　　要：针对25MnV钢石油套管调质处理后冲击韧性偏低且不稳定的问题,进行了改进的亚温淬火工艺试验。结果表明,与常规热处理相比,亚温淬火后的25MnV钢可得到板条马氏体之间分布有条状铁素体的复相组织,在不降低强度的前提下,明显提高冲击韧性,抑制高温回火脆性。According to the problem of low toughness and the instability of steel 25MnV steel oil casing treated by quenching with subsequent tempering,the subcritical quenching test was studied.The results show that compared with the conventional heat treatment,25MnV steel treated by subcritical quenching can receive a duplex microstructure of strip ferrite distributed between martensite laths,which can significantly improve the impact toughness and inhibit high temperature brittleness without reducing the strength of the premise.

关 键 词：25MNV钢 亚温淬火 性能 

分 类 号：TG156.3[金属学及工艺—热处理]