金属热处理 ›› 2024, Vol. 49 ›› Issue (2): 149-152.DOI: 10.13251/j.issn.0254-6051.2024.02.022

• 工艺研究 • 上一篇    下一篇

双级时效对ZL205A合金力学性能的影响

杨泾萍, 周文凤, 闻福林, 刘建辉   

  1. 中国工程物理研究院 机械制造工艺研究所, 四川 绵阳 621900
  • 收稿日期:2023-08-20 修回日期:2023-12-14 出版日期:2024-03-27 发布日期:2024-03-27
  • 作者简介:杨泾萍(1998—),女,助理工程师,硕士,主要研究方向为金属材料热处理工艺设计,E-mail:1252999288@qq.com

Effect of double aging on mechanical properties of ZL205A alloy

Yang Jingping, Zhou Wenfeng, Wen Fulin, Liu Jianhui   

  1. Institute of Machinery Manufacturing Technology, China Academy of Engineering Physics, Mianyang Sichuan 621900, China
  • Received:2023-08-20 Revised:2023-12-14 Online:2024-03-27 Published:2024-03-27

摘要: 对ZL205A合金试验件进行双级时效处理,探究了双级时效对其组织及力学性能的影响。结果表明,双级时效能调控显微组织,提高综合力学性能,特别是伸长率。500 ℃×30 min+535 ℃×60 min+540 ℃×720 min分级固溶处理、150 ℃×540 min+210 ℃×300 min时效后ZL205A合金的抗拉强度最高为428.5 MPa,硬度最高为126 HBW,伸长率最高为9.3%。该热处理工艺方法能够针对不同批次材料稳定铸件组织,得到良好的综合力学性能。

关键词: ZL205A合金, 双级时效, 力学性能

Abstract: Double aging treatment was carried out for ZL205A alloy test piece, and the influence of double aging on the microstructure and mechanical properties was explored. The results show that the double aging can improve the microstructure and the comprehensive mechanical properties of the test piece, especially the elongation. After multi-stage solution heat treatment of 500 ℃×30 min+535 ℃×60 min+540 ℃×720 min and aging of 150 ℃×540 min+210 ℃×300 min, the ZL205A alloy exhibits the highest tensile strength of 428.5 MPa, the highest hardness of 126 HBW, and the highest elongation of 9.3%. This heat treatment process can stabilize the microstructure of castings for different batches, obtain good comprehensive mechanical properties.

Key words: ZL205A alloy, double aging, mechanical properties

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