退火对TA1/5052爆炸复合板界面组织与性能的影响

doi:10.13251/j.issn.0254-6051.2022.05.019

金属热处理 ›› 2022, Vol. 47 ›› Issue (5): 118-125.DOI: 10.13251/j.issn.0254-6051.2022.05.019

退火对TA1/5052爆炸复合板界面组织与性能的影响

张振¹, 丁旭², 王小苗¹, 邹杰¹, 田晓东¹, 罗海龙³

1.长安大学材料科学与工程学院交通铺面材料教育部工程研究中心, 陕西西安 710064;
2.西安航空学院新材料研究所, 陕西西安 710077;
3.西安市轻金属爆炸复合材料工程研究中心, 陕西西安 710086

收稿日期:2022-01-10 修回日期:2022-03-16 出版日期:2022-05-25 发布日期:2022-06-16
通讯作者: 丁旭,教授,博士,E-mail: 28236381@qq.com
作者简介:张振(1997—),男,硕士研究生,主要研究方向为先进金属基复合材料,E-mail: 17809168698@163.com。
基金资助:
2019年度西安航空科技创业资金(2019-01);“科技助力经济2020”重点专项(21);大学生创新创业训练计划(S202110710327)

Effect of annealing on bonding interface microstructure and properties of TA1/5052 explosive welded composite plates

Zhang Zhen¹, Ding Xu², Wang Xiaomiao¹, Zou Jie¹, Tian Xiaodong¹, Luo Hailong³

1. Engineering Research Center of Transportation Materials of Ministry of Education, School of Materials Science and Engineering, Chang'an University, Xi'an Shaanxi 710064, China;
2. Research Institute of Advanced Materials, Xi'an Aeronautical University, Xi'an Shaanxi 710077, China;
3. Xi'an Light Metal Explosive Composite Materials Engineering Research Center, Xi'an Shaanxi 710086, China

Received:2022-01-10 Revised:2022-03-16 Online:2022-05-25 Published:2022-06-16

摘要/Abstract

摘要： 将TA1/5052爆炸焊接复合板在350、400及450 ℃分别保温1、3、6、9 h退火,对退火前后复合板组织和性能进行分析。结果表明:随退火温度升高,原子扩散加剧,界面形成的扩散层逐渐变厚;退火过程中铝易于向钛侧扩散,白色亮带和柯肯达尔孔洞主要位于靠近界面的5052铝合金侧;退火前界面处物相组成为α-Ti、α-Al、TiAl₃,经350、400 ℃退火3 h及450 ℃退火1、3、6、9 h后,物相组成不变。经不同温度退火后,复合板界面抗拉强度低于退火前,而断面收缩率和伸长率明显高于退火前。拉伸断口分析表明,复合板TA1侧为以脆性断裂为主、韧性断裂为辅的韧脆混合断裂,5052侧为韧性断裂;复合板在350 ℃退火时界面剪切强度和剥离强度最大,较爆炸态分别增加8.24%和45.68%,随退火温度升高,界面剪切强度和剥离强度降低。退火前后界面结合区硬度均高于基复板两侧硬度,且随离界面距离增加,硬度逐渐降低直至降至钛铝两侧母材硬度。退火后界面结合区硬度明显低于爆炸态硬度。

关键词: TA1/5052复合板, 退火, 扩散层, 组织, 性能

Abstract: TA1/5052 explosive welded composite plates were annealed at 350, 400 and 450 ℃ for 1, 3, 6 and 9 h, respectively. The microstructure and properties of the composite plates before and after annealing were studied. The results show that with the increase of annealing temperature, atomic diffusion intensifies and the diffusion layer formed at the interface becomes thicker. During annealing process, aluminum diffuses easily to the titanium side, while the bright white band and Kirkendall hole are mainly located in the side of 5052 aluminum alloy near the interface. The phase composition at the interface before annealing is α-Ti, α-Al and TiAl₃. After annealing at 350, 400 ℃ for 3 h and at 450 ℃ for 1, 3, 6, and 9 h, the phase composition is unchanged. After annealing at different temperatures, the tensile strength of the interface of the composite plates is lower than that before annealing, while the area shrinkage and elongation are significantly higher than that before annealing. The analysis of tensile fracture shows that the TAl side is ductile brittle mixed fracture with brittle fracture as the main and ductile fracture as the auxiliary, and the 5052 side is ductile fracture. When annealed at 350 ℃, the interfacial shear strength and peel strength of the composite plates are the highest, which is increased by 8.24% and 45.68%, respectively, compared with the explosion state. With the increase of annealing temperature, the interfacial shear strength and peel strength decreases. The hardness of the interface bonding zone before and after annealing is higher than that of both sides of the base plate, and with the increase of the distance from the interface, the hardness gradually decreases to the hardness of the base metal on both sides of Ti/Al. The hardness of the interface bonding zone after annealing is significantly lower than that of the explosion state.

Key words: TA1/5052 composite plate, annealing, diffusion layer, microstructure, properties

中图分类号:

TG156

张振, 丁旭, 王小苗, 邹杰, 田晓东, 罗海龙. 退火对TA1/5052爆炸复合板界面组织与性能的影响[J]. 金属热处理, 2022, 47(5): 118-125.

Zhang Zhen, Ding Xu, Wang Xiaomiao, Zou Jie, Tian Xiaodong, Luo Hailong. Effect of annealing on bonding interface microstructure and properties of TA1/5052 explosive welded composite plates[J]. Heat Treatment of Metals, 2022, 47(5): 118-125.

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退火对TA1/5052爆炸复合板界面组织与性能的影响

Effect of annealing on bonding interface microstructure and properties of TA1/5052 explosive welded composite plates

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