不同热处理工艺对18CrNiMo7-6高温晶粒度影响
Effect of Different Heat Treatment Processes on High Temperature Grain Size of 18CrNiMo7-6
夏冬冬 1陈斌 1刘红杰1
作者信息
- 1. 江阴兴澄特种钢铁有限公司,江苏 江阴 214429
- 折叠
摘要
针对18CrNiMo7-6锻打热处理后高温渗碳出现混晶现象,对锻后不同热处理工艺及冷却速度试样进行了对比分析,认为不同热处理及冷却速度对AlN析出长大起到至关作用,快速冷却的试样在回火过程中析出物细小、弥散分布,在高温渗碳过程中起到钉扎晶界作用,阻碍晶粒长大,防止高温渗碳混晶.
Abstract
In response to the phenomenon of mixed crystals in high-temperature carburization of 18CrNiMo7-6 after forging heat treatment,a comparative analysis was conducted on samples with different heat treatment processes and cooling rates after forging.It is believed that different heat treatment and cooling rates play a crucial role in the growth of AlN precipitation.Samples with rapid cooling have small and dispersed precipitates during the annealing process,which plays a role in pinning grain boundaries and hinders grain growth during high-temperature carburization,and prevents high-temperature carburization and crystal mixing.
关键词
热处理/高温晶粒度/混晶Key words
heat treatment/high temperature grain size/mixed crystal引用本文复制引用
出版年
2024
NETL
NSTL
万方数据