金属热处理 ›› 2022, Vol. 47 ›› Issue (6): 107-110.DOI: 10.13251/j.issn.0254-6051.2022.06.020

• 工艺研究 • 上一篇    下一篇

固溶处理对奥氏体不锈钢07Cr18Ni11Nb高温力学性能的影响

舒玮1, 王丽英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:2022-01-27 修回日期:2022-04-15 出版日期:2022-06-25 发布日期:2022-07-05
  • 作者简介:舒玮(1982—),男,高级工程师,博士,主要研究方向为镍基合金及新能源领域用特种不锈钢材料研发,E-mail:Shuwei@tisco.com.cn
  • 基金资助:
    山西省重点研发计划(201903D121090)

Effect of solution treatment on high temperature mechanical properties of austenitic stainless steel 07Cr18Ni11Nb

Shu Wei1, Wang Liying2   

  1. 1. State Key Laboratory of Advanced Stainless Steels, Taiyuan Iron and Steel Co., Ltd., Taiyuan Shanxi 030003, China;
    2. Technology Center, Shanxi Taigang Stainless Steel Co., Ltd., Taiyuan Shanxi 030003, China
  • Received:2022-01-27 Revised:2022-04-15 Online:2022-06-25 Published:2022-07-05

摘要: 研究了固溶处理对奥氏体不锈钢07Cr18Ni11Nb高温力学性能的影响。结果发现,500、600 ℃高温屈服强度随固溶处理温度的升高逐渐降低,500、600 ℃高温抗拉强度无明显变化。当固溶处理温度≤1100 ℃时,奥氏体晶粒尺寸基本保持不变;当固溶处理温度>1100 ℃后,奥氏体晶粒逐渐长大,固溶处理温度达到1200 ℃时,奥氏体晶粒尺寸可增大至100 μm以上。在600 ℃以下进行高温拉伸试验时,奥氏体晶界仍然是决定强化效果的重要因素,晶粒尺寸越小,高温屈服强度越高。

关键词: 奥氏体不锈钢, 固溶处理, 高温力学性能

Abstract: Effect of solution treatment on high temperature mechanical properties of austenitic stainless steel 07Cr18Ni11Nb was investigated. The results show that the high temperature yield strength at 500 ℃ and 600 ℃ decreases with the increase of solution treatment temperature, but the high temperature tensile strength at 500 ℃ and 600 ℃ has no obvious change. When the solution treatment temperature is ≤1100 ℃, the austenite grain size remains basically unchanged. When the solution treatment temperature is more than 1100 ℃, the austenite grain size grows gradually, and when the solution treatment temperature reaches 1200 ℃, the austenite grain size increases to over 100 μm. The austenite grain boundary is still an important factor to the strengthening effect when the tensile test is under 600 ℃. The smaller the grain size, the higher the yield strength at high temperature.

Key words: austenite stainless steel, solution treatment, high temperature mechanical properties

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