摘要
分析了LD钢六角冷镦模真空淬火和多次回火后的显微组织和硬度,结果表明,LD钢经真空热处理后,组织为针状回火马氏体＋少量残留奥氏体＋一次和二次碳化物,显微组织较均匀,其硬度为59.5-60.0 HRC,满足技术要求。
Microstructure and hardness of LD steel cold-heading hexagon mold after vacuum quenching and multiple tempering were investigated. The results show that the microstructure of LD steel after vacuum heat treatment is acicular tempered martensite plus small amount of residual austenite and primary and secondary carbides. The microstructure is uniform and the hardness reaches 59. 5-60. 0 HRC, which meets the technical requirements.
出处
《金属热处理》
CAS
CSCD
北大核心
2015年第4期121-124,共4页
Heat Treatment of Metals
关键词
LD钢
六角模
真空热处理
组织
硬度
LD steel
hexagon mold
vacuum heat treatment
microstructure
hardness
