淬火、配分温度对1180 MPa淬火配分钢力学性能和扩孔性的影响

doi:10.13251/j.issn.0254-6051.2023.12.009

金属热处理 ›› 2023, Vol. 48 ›› Issue (12): 60-64.DOI: 10.13251/j.issn.0254-6051.2023.12.009

淬火、配分温度对1180 MPa淬火配分钢力学性能和扩孔性的影响

姜英花^1,3, 李钊², 阳锋^1,3, 张士杰²

1.首钢集团有限公司技术研究院, 北京 100043;
2.首钢京唐钢铁联合有限责任公司, 河北唐山 063000;
3.绿色可循环钢铁流程北京市重点实验室, 北京 100043

收稿日期:2023-07-17 修回日期:2023-10-25 出版日期:2023-12-25 发布日期:2024-01-29
作者简介:姜英花(1980—),女,高级工程师,博士,主要研究方向为高强汽车用先进高强钢产品开发及前沿基础,E-mail:yinghuajiang@163.com

Effect of quenching and partitioning temperature on mechanical properties and hole expansion property of 1180 MPa Q&P steel

Jiang Yinghua^1,3, Li Zhao², Yang Feng^1,3, Zhang Shijie²

1. Research Institute of Technology, Shougang Group Co., Ltd., Beijing 100043, China;
2. Shougang Jingtang Iron & Steel Co., Ltd., Tangshan Hebei 063000, China;
3. Beijing Key Laboratory of Green Recyclable Process for Iron & Steel Production Technology, Beijing 100043, China

Received:2023-07-17 Revised:2023-10-25 Online:2023-12-25 Published:2024-01-29

摘要/Abstract

摘要： 研究了淬火温度和配分温度对1180 MPa淬火配分钢的力学性能和扩孔性的影响。结果表明,250~300 ℃淬火、420 ℃配分后试验钢可获得较高伸长率和高扩孔率的良好匹配。此时,微观组织主要由板条回火马氏体和残留奥氏体组成,薄膜状残留奥氏体提供高的伸长率,而回火马氏体提供高的扩孔率。

关键词: 淬火温度, 配分温度, 回火马氏体, 扩孔率, 残留奥氏体

Abstract: Effects of quenching temperature and partitioning temperature on mechanical properties and hole expansion property of a 1180 MPa Q&P steel were investigated. The results show that after quenching at 250-300 ℃ and partitioning at 420 ℃, the tested steel can achieve a good match of high elongation and high hole expansion ratio, where the microstructure is mainly composed of lath tempered martensite and retained austenite, the film shaped retained austenite provides high elongation, the tempered martensite provides high hole expansion ratio.

Key words: quenching temperature, partitioning temperature, tempered martensite, hole expansion ratio, retained austenite

中图分类号:

TG142.1

姜英花, 李钊, 阳锋, 张士杰. 淬火、配分温度对1180 MPa淬火配分钢力学性能和扩孔性的影响[J]. 金属热处理, 2023, 48(12): 60-64.

Jiang Yinghua, Li Zhao, Yang Feng, Zhang Shijie. Effect of quenching and partitioning temperature on mechanical properties and hole expansion property of 1180 MPa Q&P steel[J]. Heat Treatment of Metals, 2023, 48(12): 60-64.

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淬火、配分温度对1180 MPa淬火配分钢力学性能和扩孔性的影响

Effect of quenching and partitioning temperature on mechanical properties and hole expansion property of 1180 MPa Q&P steel

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