Heat Treatment of Metals ›› 2023, Vol. 48 ›› Issue (12): 116-122.DOI: 10.13251/j.issn.0254-6051.2023.12.019

• PROCESS RESEARCH • Previous Articles     Next Articles

Effect of heat treatment on microstructure and mechanical properties of Ti-1023 titanium alloy

Jiang Xiaojuan1, Yang Gang1, Zhan Zhengyang1, Cheng Xiaowei2, Dong Mengyao1, Deng Guoyong2, Sun Tao2, Sun Chaoyuan2,3   

  1. 1. School of Mechanical Engineering, Chongqing Industry Polytechnic College, Chongqing 401120, China;
    2. Chengdu Advanced Metal Material Research Institute Co., Ltd., Chengdu Sichuan 610300, China;
    3. School of Materials Science and Engineering, Chongqing University, Chongqing 400044, China;
    4. China National Erzhong Group Deyang Wahang Die Forging Co., Ltd., Deyang Sichuan 618000, China
  • Received:2023-06-30 Revised:2023-10-22 Online:2023-12-25 Published:2024-01-29

Abstract: Effects of solution treatment, aging and cooling rate on the microstructure and mechanical properties of Ti-1023 alloy were studied by using heat treatment furnace, mechanical performance testing machine and X-ray diffractometer. The results show that when the solution treatment temperature is slightly higher than transition temperature, the primary αP phase disappears with β grain growing slowly, and the strength and hardness of the alloy increase. The alloy is water quenched after solution treatment, due to the fast cooling rate, a small amount of α phase and the uniform thick β phase form the basket-weave structure, and the strength and hardness are improved. When the aging time is 1 h, the secondary αS formed during the aging process produces the second phase strengthening effect, which shows significant dispersion strengthening effect and increases the strength and hardness of the alloy.

Key words: Ti-1023 titanium alloy, solution and aging, microstructure, mechanical properties, XRD

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