27MnCrB5钢的配分工艺

doi:10.13251/j.issn.0254-6051.2025.07.032

金属热处理 ›› 2025, Vol. 50 ›› Issue (7): 226-231.DOI: 10.13251/j.issn.0254-6051.2025.07.032

27MnCrB5钢的配分工艺

沈宝国¹, 付佳乐², 郭顺², 倪豪豪², 翟绍康², 王宸煜², 刘海霞², 程晓农²

1.江苏航空职业技术学院, 江苏镇江 212134;
2.江苏大学材料科学与工程学院, 江苏镇江 212013

收稿日期:2024-12-09 修回日期:2025-04-20 出版日期:2025-07-25 发布日期:2025-07-28
通讯作者: 郭顺,教授,博士,E-mail:shunguo@ujs.edu.cn
作者简介:沈宝国(1981—),男,副教授,硕士,主要研究方向为金属材料的热处理、组织与性能,E-mail:shenbg@jatc.edu.cn。
基金资助:
国家自然科学基金(52175410)

Partitioning process for 27MnCrB5 steel

Shen Baoguo¹, Fu Jiale², Guo Shun², Ni Haohao², Zhai Shaokang², Wang Chenyu², Liu Haixia², Cheng Xiaonong²

1. Jiangsu Aviation Technical College, Zhenjiang Jiangsu 212134, China;
2. School of Materials Science and Engineering, Jiangsu University, Zhenjiang Jiangsu 212013, China

Received:2024-12-09 Revised:2025-04-20 Online:2025-07-25 Published:2025-07-28

摘要/Abstract

摘要： 利用光学显微镜、扫描电镜、X射线衍射仪和电子万能试验机对经不同工艺Q&P处理的27MnCrB5钢热轧板材的组织和性能进行了表征,并对27MnCrB5钢的配分工艺进行了探讨。结果表明,27MnCrB5钢热轧板经Q&P处理后的显微组织由马氏体、贝氏体和残留奥氏体组成。300 s配分时间下,随配分温度(260~350 ℃)的降低,残留奥氏体含量呈现先降低后升高的趋势。320 ℃配分温度下,随着配分时间(30~300 s)的延长,残留奥氏体含量逐渐增加。压缩试验结果表明,较高的残留奥氏体含量可推迟钢在变形过程中的加工硬化行为,在不显著降低屈服强度的同时可提高其室温成形能力。

关键词: 耐磨钢, 配分工艺, 残留奥氏体, 性能

Abstract: Microstructure and properties of 27MnCrB5 steel hot-rolled plate Q&P treated with different processes were characterized by using OM, SEM, XRD and electronic universal testing machine, and the partitioning process of the 27MnCrB5 steel was systematically investigated. The results indicate that the microstructure of the Q&P treated 27MnCrB5 steel consists of martensite, bainite and retained austenite. Under partitioning time of 300 s, the retained austenite content first decreases and then increases with partitioning temperature (260-350 ℃) decreasing. At partitioning temperature of 320 ℃, the retained austenite content increases gradually with partitioning time (30-300 s) prolonging. The compression test results reveal that higher content of retained austenite delays the work-hardening behavior during deformation, which enhances room-temperature formability without significantly reducing the yield strength.

Key words: wear resistant steel, partitioning process, retained austenite, properties

中图分类号:

TG142.1

沈宝国, 付佳乐, 郭顺, 倪豪豪, 翟绍康, 王宸煜, 刘海霞, 程晓农. 27MnCrB5钢的配分工艺[J]. 金属热处理, 2025, 50(7): 226-231.

Shen Baoguo, Fu Jiale, Guo Shun, Ni Haohao, Zhai Shaokang, Wang Chenyu, Liu Haixia, Cheng Xiaonong. Partitioning process for 27MnCrB5 steel[J]. Heat Treatment of Metals, 2025, 50(7): 226-231.

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27MnCrB5钢的配分工艺

Partitioning process for 27MnCrB5 steel

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