摘要
研究了亚临界处理温度和保温时间对高铬白口铸铁组织转变、硬度和耐磨性的影响 ,研究表明 ,铸态组织中含有大量残留奥氏体的高铬白口铸铁 ,在 5 0 0～ 6 5 0℃之间进行热处理 ,其中的残留奥氏体在冷却到室温的过程中会转变成马氏体而造成高铬铸铁硬度升高。在适当的处理温度和保温时间下 ,高铬白口铸铁能得到最高的硬度 ,温度过高或保温时间过长都会导致其硬度下降。磨损试验结果表明 。
The effect of subcritical treating temperature and time on microstructure, hardness and wear resistance of a high chromium white cast iron which has a great amount of the retained austenite is studied.The results show that,the retained austenite can transform into martensite in cooling to room temperature after heat treated at 500～600℃ leading the increase of hardness of the high chromium white cast iron. After subcritical treating at suitable temperature and time, the high chromium white cast iron can get the most high hardness.Wear test results show that the subcritical treatment can increase wear resistance of the high chromium white cast iron.
出处
《材料热处理学报》
EI
CAS
CSCD
北大核心
2003年第3期54-57,共4页
Transactions of Materials and Heat Treatment
关键词
高铬白口铸铁
亚临界热处理
马氏体相变
硬化
耐磨性
high chromium white cast iron
subcritical treatment
martensite transformation
wear resistance
