金属热处理 ›› 2025, Vol. 50 ›› Issue (12): 155-160.DOI: 10.13251/j.issn.0254-6051.2025.12.023

• 工艺研究 • 上一篇    下一篇

固溶温度对冷轧HRX19奥氏体不锈钢组织与力学性能的影响

张继舜1, 赵吉庆1, 王建强2, 王利伟2, 周华贸2, 杨钢1   

  1. 1.钢铁研究总院有限公司 特殊钢研究院, 北京 100081;
    2.攀钢集团江油长城特殊钢有限公司, 四川 江油 621704
  • 收稿日期:2025-07-09 修回日期:2025-10-12 发布日期:2026-01-06
  • 通讯作者: 赵吉庆,工程师,博士,E-mail: zhaojiqing@nercast.com
  • 作者简介:张继舜(1994—),男,博士,主要研究方向为材料的氢脆,E-mail: jihsun0707@foxmail.com。
  • 基金资助:
    国家新材料生产应用示范平台项目(22T60130)

Effect of solution treatment temperature on microstructure and mechanical properties of cold-rolled HRX19 austenitic stainless steel

Zhang Jishun1, Zhao Jiqing1, Wang Jianqiang2, Wang Liwei2, Zhou Huamao2, Yang Gang1   

  1. 1. Research Institute of Special Steels, Central Iron and Steel Research Institute Co., Ltd., Beijing 100081, China;
    2. Jiangyou Changcheng Special Steel Co., Ltd., of Pangang Group, Jiangyou Sichuan 621704, China
  • Received:2025-07-09 Revised:2025-10-12 Published:2026-01-06

摘要: 通过OM、SEM、TEM等显微表征手段以及拉伸、冲击试验等性能测试对1050~1150 ℃×1 h固溶处理后的冷轧HRX19奥氏体不锈钢的组织与力学性能进行了研究。结果表明,冷轧HRX19奥氏体不锈钢的力学性能主要受晶粒尺寸与Z相含量的影响。当固溶温度低于1100 ℃时,不锈钢的组织与力学性能均变化较小,仅表现出强度略有降低;当固溶温度达到1100 ℃时, Z相含量开始明显减少,导致硬度下降,韧性显著提升;进一步提升固溶温度至1150 ℃,Z相含量持续减少,同时晶粒尺寸显著增大,强度与硬度随之降低。1100 ℃固溶处理后,冷轧HRX19奥氏体不锈钢可获得较好的强韧性匹配。

关键词: HRX19奥氏体不锈钢, 固溶处理, Z相, 力学性能

Abstract: Microstructure and mechanical properties of cold-rolled HRX19 austenitic stainless steel subjected to solution treatment at different temperatures of 1050-1150 ℃ for 1 h were investigated using microscopic characterization techniques, including OM, SEM, and TEM, alongside tensile and impact property tests. The results indicate that the mechanical properties of the cold-rolled HRX19 austenitic stainless steel are primarily influenced by grain size and Z phase content. When the solution treatment temperature is below 1100 ℃, the microstructure and mechanical properties exhibit minimal changes, with only a slight reduction in strength. At 1100 ℃, the Z phase content begins to decrease, leading to a significant improvement in toughness and a reduction in hardness. Further increasing the solution treatment temperature to 1150 ℃ causes a continued reduction in Z phase content and a marked increase in grain size, resulting in decreased strength and hardness. After solution treatment at 1100 ℃, the cold-rolled HRX19 austenitic stainless steel can achieve a good combination of strength and toughness.

Key words: HRX19 austenitic stainless steel, solution treatment, Z phase, mechanical properties

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