M390高铬高钒粉末冶金工具钢奥氏体化过程中的碳化物演变规律

doi:10.13251/j.issn.0254-6051.2023.11.001

金属热处理 ›› 2023, Vol. 48 ›› Issue (11): 1-7.DOI: 10.13251/j.issn.0254-6051.2023.11.001

• 材料研究 • 下一篇

M390高铬高钒粉末冶金工具钢奥氏体化过程中的碳化物演变规律

邓锦强¹, 张覃轶^1,2, 陈俊¹, 伍冬^1,2, 刘伟², 周鸿锋²

1. 武汉理工大学材料科学与工程学院, 湖北武汉 430070;
2.阳江拓必拓工业技术研究院有限公司, 广东阳江 529500

收稿日期:2023-06-13 修回日期:2023-09-12 出版日期:2023-11-25 发布日期:2023-12-27
通讯作者: 张覃轶,副教授,博士,E-mail:zhqy@whut.edu.cn
作者简介:邓锦强(1996—),男,硕士研究生,主要研究方向为金属材料热处理,E-mail:2356877134@qq.com。
基金资助:
广东省科技创新专项基金(SDZX2021001)

Carbide evolution law of high chromium and high vanadium powder metallurgy tool steel M390 during austenitizing

Deng Jinqiang¹, Zhang Qinyi^1,2, Chen Jun¹, Wu Dong^1,2, Liu Wei², Zhou Hongfeng²

1. School of Materials Science and Engineering, Wuhan University of Technology, Wuhan Hubei 430070, China;
2. Yangjiang Tuobituo Industrial Technology Research Institute Co., Ltd., Yangjiang Guangdong 529500, China

Received:2023-06-13 Revised:2023-09-12 Online:2023-11-25 Published:2023-12-27

摘要/Abstract

摘要： 利用SEM-EDS、TEM和Image-Pro Plus等分析手段研究了M390钢在不同奥氏体化过程中的碳化物演变规律。结果表明,在1075~1150 ℃加热,保温15~120 min奥氏体化条件下,M390钢中碳化物体积分数和平均尺寸随淬火温度升高整体呈现下降趋势。同一淬火温度下,随保温时间延长,碳化物数量整体减少,碳化物平均尺寸先减小后增大,小尺寸碳化物数量先增加后减少,硬度先上升后下降。高温油淬后M390钢中未溶碳化物类型主要是M₇C₃和M₈C₇。在奥氏体化过程中,M390钢中碳化物变化主要是M₇C₃的溶解、长大及再溶解。

关键词: 不锈工具钢M390, 奥氏体化, 碳化物

Abstract: Evolution of carbides in the M390 steel during different austenitizing processes was studied using analysis methods such as SEM-EDS, TEM, and Image-Pro Plus. The results show that under the austenitizing conditions of heating at 1075-1150 ℃ and holding for 15-120 min, the volume fraction and average size of carbides in the M390 steel show a decreasing trend as the quenching temperature increases. At the same quenching temperature, with the prolongation of holding time, the amount of carbides decreases as a whole, the average size of carbides decreases first and then increases, while the amount of small carbides and hardness increase first and then decrease. The types of undissolved carbides in high temperature oil quenched steel are mainly M₇C₃ and M₈C₇. During austenitizing, the change of carbides in the M390 steel is mainly the dissolution, growth and dissolution of M₇C₃.

Key words: stainless tool steel M390, austenitizing, carbides

中图分类号:

TG156

邓锦强, 张覃轶, 陈俊, 伍冬, 刘伟, 周鸿锋. M390高铬高钒粉末冶金工具钢奥氏体化过程中的碳化物演变规律[J]. 金属热处理, 2023, 48(11): 1-7.

Deng Jinqiang, Zhang Qinyi, Chen Jun, Wu Dong, Liu Wei, Zhou Hongfeng. Carbide evolution law of high chromium and high vanadium powder metallurgy tool steel M390 during austenitizing[J]. Heat Treatment of Metals, 2023, 48(11): 1-7.

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M390高铬高钒粉末冶金工具钢奥氏体化过程中的碳化物演变规律

Carbide evolution law of high chromium and high vanadium powder metallurgy tool steel M390 during austenitizing

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