铸造技术2013，Vol.34Issue(4)：432-434,3.
等温淬火回火温度对60Si2CrVAT弹簧钢显微组织的影响
Effect of Austempering and Tempering Temperature on Microstructure of 60Si2CrVA Spring Steel
宋博 1马红梅2
作者信息
- 1. 河南广播电视大学,河南郑州450046
- 2. 商丘职业技术学院,河南商丘476000
- 折叠
摘要
Abstract
The effect of austempering temperature and tempering temperature on the microstructure of 60Si2CrVA spring steel was studied by metallurgical microscope observation and analysis under the same experimental conditions of material and heat treatment time.The results show that the undissolved carbides reduce in experimental steel and the content of retained austenite increases with the increase of austempering temperature.The final structure is the upper and lower bainite,residual austenite and a small amount ofmartensite.The grains of the steel obviously become coarse after quenched at 960 ℃.With the increase of tempering temperature,the microstructure of the tested steel changes from coarsening bainite,residual austenite to tempering flexor,sorbite.The integrated structure morphology is relatively better when the heat treatment process is heating at 910 ℃ for 30 min + isothermal at 300 ℃ for 30 min in molten salt medium + tempering at 420 ℃ for40 min,oilcold.关键词
60Si2CrVAT弹簧钢/等温淬火/回火/显微组织Key words
60Si2CrVAT spring steel/ austempering/ tempering/ microstructure分类
矿业与冶金引用本文复制引用
宋博,马红梅..等温淬火回火温度对60Si2CrVAT弹簧钢显微组织的影响[J].铸造技术,2013,34(4):432-434,3.
