去应力退火对TC18和TC21钛合金吸氢含量的影响

doi:10.13251/j.issn.0254-6051.2020.06.018

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

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. 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. 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/Abstract

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

中图分类号:

TG156.2

郑超, 胡生双, 李斌博, 欧阳成龙, 欧阳德来. 去应力退火对TC18和TC21钛合金吸氢含量的影响[J]. 金属热处理, 2020, 45(6): 80-83.

Zheng Chao, Hu Shengshuang, Li Binbo, Ouyang Chenglong, Ouyang Delai. Effect of stress relief annealing on hydrogen absorption of TC18 and TC21 titanium alloy[J]. Heat Treatment of Metals, 2020, 45(6): 80-83.

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去应力退火对TC18和TC21钛合金吸氢含量的影响

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

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