淬火回火工艺对H13钢组织及硬度性能的影响
Influences of Quenching and Tempering on Microtructure and Hardess of H13 Steel
李勇 1陈晶芳1
作者信息
- 1. 浙江工贸职业技术学院先进材料研发中心，浙江温州325003
- 折叠
摘要
通过对不同淬火及回火工艺处理的H13钢进行硬度测试及金相分析，结果显示：H13钢在1020℃～1080℃淬火温度范围内、530℃～650℃回火温度区间内，随淬火温度的升高，钢的淬火硬度有先升高后下降的趋势， H13钢在1050℃左右淬火时其淬火硬度最高。当淬火温度相同时，随回火温度的升高，钢的回火硬度呈现出先升高后下降的趋势，在560℃左右回火时其回火硬度达到峰值，此时钢的组织主要由板条状回火马氏体、细小碳化物颗粒加少量的残余奥氏体组成，且随着回火温度的升高，回火马氏体逐步向回火索氏体转化；当回火温度达到620℃～650℃时，钢的硬度开始急剧下降。
Abstract
The heat treatment process of H13 steel were tested in condition of different quenching and tempering temperatures, then material microstructure and hardness of performance were analyzed in this paper. The results indicated that hardness of H13 steel showed the trend increasing firstly and then decreasing when the tempering temperature raised and the quenching temperature was the same, in the range of 1 020℃~1 080℃quenching temperature and 530℃~650℃tempering temperature. The highest hardness of H13 steel was obtained when the material was treated by 560℃tempering temperature. And the microstructure of H13 steel was mainly made up of granular carbides, lath tempered martensites and small amount of residual austenites. In addition, tempered martensites grad?ually transformed into tempered sorbites when the tempering temperature raised. And the hardness of H13 steel started a precipitous de?cline in the range of 620℃~650℃tempering temperature.
关键词
H13热作模具钢/淬火回火/硬度/显微组织Key words
H13 hot die steel/quenching and tempering/hardness/microstructure引用本文复制引用
基金项目
温州市首批重点创新团队项目(C20120003)
出版年
2014
NETL
NSTL
维普
万方数据