摘要
研究了预先热处理对２０ＭｎＶＢ钢奥氏体晶粒度及冲击韧性的影响。结果表明，该钢经１２５０℃×１ｈ固溶处理＋８６０℃×１ｈ水淬预先热处理后钢的奥氏体本质晶粒度可达９＿１０级，８６０℃油淬＋２００℃回火后钢的冲击韧性可达１６２Ｊ／ｃｍ２。
Abstract The influences of pretreatment on austenite grain size and impact toughness of 20MnVB steel have been investigated. The results show that the influences depend on the dissolution and precipitation behaviors of carbonitride precipitated phase. After the treatment at 1250℃×1h and water quenching at 860℃×1h, the austenite inherent grain size of the steel is up to 9_10 grade and the impact toughness of the steel after oil hardening at 860℃×1h and tempering at 200℃×1h is 162J/cm 2.
出处
《机械工程材料》
CAS
CSCD
北大核心
1999年第4期14-15,21,共3页
Materials For Mechanical Engineering
基金
冶金工业部基金
