金属热处理 ›› 2022, Vol. 47 ›› Issue (10): 198-202.DOI: 10.13251/j.issn.0254-6051.2022.10.033

• 工艺研究 • 上一篇    下一篇

双重时效处理对β21S钛合金棒材组织性能的影响

王幸运1, 黄文彬2, 乔恩利1, 雷文光1, 岳旭1   

  1. 1.新疆湘润新材料科技有限公司, 新疆 哈密 839000;
    2.空装驻沈阳地区第四军事代表室, 辽宁 沈阳 110023
  • 收稿日期:2022-06-18 修回日期:2022-08-09 出版日期:2022-10-25 发布日期:2022-12-15
  • 作者简介:王幸运(1985—),男,工程师,硕士,主要研究方向为钛及钛合金研发、成形、金属旋压等,E-mail:13309282316@163.com
  • 基金资助:
    2021年度自治区创新环境(人才、基地)建设专项(XJQY2009)

Effect of double aging treatment on microstructure and properties of β21S titanium alloy bar

Wang Xingyun1, Huang Wenbin2, Qiao Enli1, Lei Wenguang1, Yue Xu1   

  1. 1. Xinjiang Xiangrun New Material Technology Co., Ltd., Hami Xinjiang 839000, China;
    2. Fourth Military Representative Office of Shenyang Region, Shenyang Liaoning 110023, China
  • Received:2022-06-18 Revised:2022-08-09 Online:2022-10-25 Published:2022-12-15

摘要: 研究了双重时效处理β21S钛合金棒材的显微组织及性能。结果表明,β21S钛合金时效时首先在晶粒内部析出α相,首次时效处理的温度及时间对析出相的影响较大。540 ℃×20 min和550 ℃×10 min首次时效处理获得了较为均匀和数量相当的析出相,首次时效后再进行510 ℃常规时效,试样的抗拉强度未明显降低,但伸长率比单次固溶时效提高2%以上。相同双重时效制度下,固溶温度升高,抗拉强度增大,伸长率减小。双重时效处理对剪切性能的影响不大。

关键词: β21S钛合金, 双重时效, 组织, 性能

Abstract: Microstructure and properties of the β21S titanium alloy bar after double aging treatment were studied. The results show that the α phase occurs in the grain after first aging, and the temperature and time of the first aging treatment have a great influence on precipitated phase. After the first aging at 540 ℃ for 20 min and 550 ℃ for 10 min, relatively uniform and comparable amounts of precipitates can be obtained. After first aging and then second conventional aging at 510 ℃, the tensile strength of the specimen does not decrease significantly, but the elongation of the specimen increases more than 2% compared with the single solution aging. Under the same double aging treatment, as the solution temperature increasess, the tensile strength increases, while the elongation decreases. Double aging treatment has little effect on shear properties.

Key words: β21S titanium alloy, double aging, microstructure, properties

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