金属热处理 ›› 2023, Vol. 48 ›› Issue (2): 223-227.DOI: 10.13251/j.issn.0254-6051.2023.02.035

• 工艺研究 • 上一篇    下一篇

固溶处理对A286合金组织与硬度的影响

李吉东1,2, 王岩1,2, 谷宇1,2, 王斌1,2   

  1. 1.太原钢铁(集团)有限公司 先进不锈钢材料国家重点实验室, 山西 太原 030003;
    2.山西太钢不锈钢股份有限公司 技术中心, 山西 太原 030003
  • 收稿日期:2022-09-23 修回日期:2022-12-26 出版日期:2023-02-25 发布日期:2023-03-22
  • 作者简介:李吉东(1982—),男,工程师,硕士,主要研究方向为镍基合金,E-mail:Lijd@tisco.com.cn

Effect of solution treatment on microstructure and hardness of A286 alloy

Li Jidong1,2, Wang Yan1,2, Gu Yu1,2, Wang Bin1,2   

  1. 1. State Key Laboratory of Advanced Stainless Steel Materials, Taiyuan Iron & Steel(Group) Co., Ltd., Taiyuan Shanxi 030003, China;
    2. Technology Center, Shanxi Taiyuan Stainless Steel Co., Ltd., Taiyuan Shanxi 030003, China
  • Received:2022-09-23 Revised:2022-12-26 Online:2023-02-25 Published:2023-03-22

摘要: 通过光学显微镜、扫描电镜和洛氏硬度计等研究了固溶温度(980、1000、1020 ℃)和保温时间(60、90、120 min)对A286合金微观组织和硬度的影响。结果表明,热轧态合金基体为再结晶的均匀奥氏体晶粒组织,同时存在一次碳氮化物。随着固溶温度的升高和保温时间的延长,再结晶晶粒优先从表面生长并逐渐向内部扩展,晶界有较大尺寸磷化物析出,合金硬度小幅度降低。

关键词: A286合金, 固溶处理, 微观组织, 硬度

Abstract: Effects of solution treatment temperature (980, 1000, 1020 ℃) and holding time (60, 90, 120 min) on microstructure and hardness of the A286 alloy were studied by means of optical microscope, scanning electron microscope and Rockwell hardness tester. The results show that the hot rolled alloy matrix is a homogeneous recrystallized austenitic grain structure, with primary carbonitrides in it. With the increase of solution treatment temperature and holding time, the recrystallized grains preferentially grow from the surface and gradually expand to the inside, and phosphides with larger size are precipitated on the grain boundary, the hardness of the alloy decreases slightly.

Key words: A286 alloy, solution treatment, microstructure, hardness

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