金属热处理 ›› 2020, Vol. 45 ›› Issue (12): 132-135.DOI: 10.13251/j.issn.0254-6051.2020.12.026

• 工艺研究 • 上一篇    下一篇

轧制与退火对T9S钛合金板材组织与性能的影响

张强1,2, 李洋1,2, 郝晓博1,2, 李渤渤1,2, 周华1,2, 刘茵琪1,2   

  1. 1.洛阳双瑞精铸钛业有限公司, 河南 洛阳 471003;
    2.中国船舶重工集团公司 第七二五研究所, 河南 洛阳 471023
  • 收稿日期:2020-06-23 出版日期:2020-12-25 发布日期:2021-01-14
  • 作者简介:张 强(1989—),男,工程师,硕士,主要研究方向为钛及钛合金的加工工艺,E-mail:zqqz204@163.com
  • 基金资助:
    郑洛新自创区集群专项计划(181200212500)

Effects of rolling and annealing on microstructure and properties of T9S titanium alloy sheet

Zhang Qiang1,2, Li Yang1,2, Hao Xiaobo1,2, Li Bobo1,2, Zhou Hua1,2, Liu Yinqi1,2   

  1. 1. Luoyang Sunrui Titanium Precision Casting Co., Ltd., Luoyang Henan 471003, China;
    2. Luoyang Ship Material Research Institute, Luoyang Henan 471023, China
  • Received:2020-06-23 Online:2020-12-25 Published:2021-01-14

摘要: 研究了轧制变形量及退火温度对T9S钛合金板材显微组织和室温力学性能的影响。结果表明:增加成品轧制变形量,板材组织破碎更充分,退火后形成等轴α相、拉长α相和晶间β相组织形貌,变形流线比较明显,板材室温强度和硬度升高,伸长率降低,弹性模量增加。随着退火温度升高,板材室温强度和硬度逐渐降低,伸长率逐渐提高,横向弹性模量逐渐减小,纵向弹性模量先增加后减小。经(750~790) ℃×45 min空冷退火处理后的板材可以获得较好的强度和塑性的匹配。

关键词: T9S钛合金板材, 轧制, 退火, 组织, 力学性能

Abstract: Effects of rolling deformation and annealing temperature on microstructure and mechanical properties of T9S titanium alloy sheet were studied. The results show that with the increase of rolling deformation of finished products, the microstructure of the sheet is finer, and the equiaxed α phase, the elongated α phase and boundary β phase are formed after annealing, but the deformation flow line is obvious, meanwhile, the room temperature strength and hardness of the sheet increase, the elongation decreases, and the elastic modulus increases. With the increase of annealing temperature, the room temperature strength and hardness of the sheet gradually decrease, the elongation gradually increases, the transverse elastic modulus decreases, and the longitudinal elastic modulus first increases and then decreases. After annealing at 750-790 ℃ for 45 min with air cooling, the sheet can obtain a better match between strength and plasticity.

Key words: T9S titanium alloy sheet, rolling, annealing, microstructure, mechanical properties

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