金属热处理 ›› 2020, Vol. 45 ›› Issue (6): 80-83.DOI: 10.13251/j.issn.0254-6051.2020.06.018

• 工艺研究 • 上一篇    下一篇

去应力退火对TC18和TC21钛合金吸氢含量的影响

郑超1, 胡生双1, 李斌博1, 欧阳成龙1, 欧阳德来2   

  1. 1. 航空工业西安飞机工业集团有限责任公司, 陕西 西安 710089;
    2. 南昌航空大学 材料科学与工程学院, 江西 南昌 330063
  • 收稿日期:2019-11-12 出版日期:2020-06-25 发布日期:2020-09-02
  • 通讯作者: 欧阳德来,副教授,博士,E-mail:ouyangdelai@163.com
  • 作者简介:郑 超(1982—),女,高级工程师,硕士,主要研究方向为航空材料与特种工艺,E-mail:zhengchao82@126.com。
  • 基金资助:
    国家自然科学基金(51761029,51864035)

Effect of stress relief annealing on hydrogen absorption of TC18 and TC21 titanium alloy

Zheng Chao1, Hu Shengshuang1, Li Binbo1, Ouyang Chenglong1, Ouyang Delai2   

  1. 1. Avic Xi'an Aircraft Industry Group Co., Ltd., Xi'an Shaanxi 710089, China;
    2. School of Materials Science and Engineering, Nanchang Hangkong University, Nanchang Jiangxi 330063, China
  • Received:2019-11-12 Online:2020-06-25 Published:2020-09-02

摘要: 在井式空气炉内按GJB 3763A—2004标准的最高温度和最长保温时间对TC18和TC21钛合金进行了去应力退火,研究了空气炉去应力退火对TC18和TC21钛合金吸氢含量的影响。结果表明:与去应力退火前相比,TC18钛合金经空气炉去应力退火后氢含量有所增加,而TC21钛合金氢含量反而降低。经去应力退火后,TC18和TC21钛合金的氢含量分别为0.0029%和0.0025%,远小于材料规范要求的氢含量(<0.015%);随表层至中心(深度变化),氢含量未见明显的规律性变化,里层氢含量与表层氢含量相差不大。从吸氢量考虑,该两种钛合金均可采用空气炉进行消除应力热处理。

关键词: TC18钛合金, TC21钛合金, 去应力退火, 吸氢量

Abstract: Stress relief annealing of TC18 and TC21 titanium alloys was carried out in a pit-type air furnace according to GJB3763A-2004 standard with the highest temperature and longest holding time, respectively. The effect of stress relief annealing on hydrogen absorption of TC18 and TC21 titanium alloys was studied. The results show that the hydrogen content of TC18 titanium alloy increases after stress relief annealing in air furnace compared with that before stress relief heat treatment, while that of TC21 titanium alloy decreases. The hydrogen content of TC18 and TC21 is 0.0029% and 0.0025% respectively, that is much lower than that of required by material specifications(<0.015%) after stress relief in the air furnace. After stress relief annealing, the hydrogen content of TC18 and TC21 titanium alloys change regularly with the change from surface to center (depth), and there is little difference between the hydrogen content of inner layer and that of surface layer. Considering the amount of hydrogen absorption, stress relief annealing can be conducted for the two titanium alloys by air furnace.

Key words: TC18 titanium alloy, TC21 titanium alloy, stress relief annealing, hydrogen absorption

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