金属热处理 ›› 2023, Vol. 48 ›› Issue (9): 95-98.DOI: 10.13251/j.issn.0254-6051.2023.09.016

• 工艺研究 • 上一篇    下一篇

变形量对Ti80G合金力学性能的影响

韩伟松1, 杜峰1, 李建锋1, 朱宝辉1,2, 沈立华1, 刘意1, 王鹏1   

  1. 1.宁夏中色金航钛业有限公司, 宁夏 石嘴山 753000;
    2.西北稀有金属材料研究院宁夏有限公司 稀有金属特种材料国家重点实验室, 宁夏 石嘴山 753000
  • 收稿日期:2023-05-01 修回日期:2023-08-01 出版日期:2023-09-25 发布日期:2023-10-25
  • 通讯作者: 朱宝辉,高级工程师,硕士,E-mail:zbhwel@163.com
  • 作者简介:韩伟松(1987—),男,工程师,主要研究方向为钛及钛合金的加工和热处理,E-mail:383414087@qq.com。
  • 基金资助:
    宁夏自然科学基金(NZ17252)

Effect of deformation on mechanical properties of Ti80G alloy

Han Weisong1, Du Feng1, Li Jianfeng1, Zhu Baohui1,2, Shen Lihua1, Liu Yi1, Wang Peng1   

  1. 1. Ningxia NFC Jinhang Titanium Industry Co., Ltd., Shizuishan Ningxia 753000, China;
    2. State Key Laboratory of Special Rare Metal Materials, Northwest Rare Metal Materials Research Institute Ningxia Co., Ltd., Shizuishan Ningxia 753000, China
  • Received:2023-05-01 Revised:2023-08-01 Online:2023-09-25 Published:2023-10-25

摘要: φ93 mm的Ti80G钛合金棒材进行锻造,变形量为10%~40%,并对所锻棒材进行900 ℃退火,研究锻造变形量对退火后钛合金力学性能的影响。结果表明,随锻造变形量增加,合金初生α相体积分数减小,析出α相体积分数增加,室温、高温强度增加,塑韧性基本上先增加后减小,冲击性能增加,在30%变形量时Ti80G合金达到最佳力学性能匹配,此时室温/高温抗拉强度分别为901.0、565.0 MPa,室温/高温屈服强度分别为792.5、482.0 MPa,室温/高温断后伸长率分别为17.25%、22.00%,室温/高温断面收缩率分别为45.0%、69.0%,冲击吸收能量为100.60 J。

关键词: Ti80G钛合金棒材, 变形量, 退火, 力学性能

Abstract: φ93 mm Ti80G titanium alloy bar was forged with a deformation between 10%-40%, and the forged rod was annealed at 900 ℃ to study the effect of forging deformation on the mechanical properties of the annealed titanium alloy. The results show that with the increase of forging deformation, primary α phase volume fraction reduces and precipitation α volume fraction increases, the strength at room temperature and high temperature increases, the ductility first increases and then decreases, and the impact property increases. At 30% deformation, the Ti80G alloy achieves the best mechanical properties match, with room temperature/high temperature tensile strength of 901.0 and 565.0 MPa, room temperature/high temperature yield strength of 792.5 and 482.0 MPa, room temperature/high temperature elongation after fracture of 17.25% and 22.00%, and room temperature/high temperature percentage reduction of area of 45.0% and 69.0%, respectively. And impact absorbed energy reaches 100.60 J.

Key words: Ti80G titanium alloy bar, deformation, annealing, mechanical properties

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