摘要
研究了回火温度对１６ＮｉＣｏ和２３ＮｉＣｏ二次硬化超高强度钢显微组织与力学性能的影响。二次硬化峰的形成是具有稳定高密度位错的马氏体及自基体共格析出的Ｍ２Ｃ共同作用的结果。在４３０℃回火出现的韧性降低，与板条间形成的渗碳体有关。
Effect of tempering temperature on microstructure and mechanical properties of 16NiCo and 23NiCo secondery-hardening ultrahigh strength steel was studied. The strengthening was mainly attributed to the combination of the delayed dislocation recovery of the martensitic matrix and coherent precipitation of the Mo2C particle. Upon tempering at 430℃,the impact toughness reaches a minimum value. It is caused by cementite at platelets.
出处
《材料工程》
EI
CAS
CSCD
北大核心
1995年第11期40-42,共3页
Journal of Materials Engineering
