New Technique to Repair Keyhole of 2195 Al-Li Alloy Friction Stir Welding Joints-Reference-Cited by-同舟云学术

New Technique to Repair Keyhole of 2195 Al-Li Alloy Friction Stir Welding Joints

Published:2024-07-11 Issue:14 Volume:17 Page:3418
ISSN:1996-1944
Container-title:Materials
language:en
Short-container-title:Materials

Author:

Meng Xiangchen¹²^ORCID,Chen Xi¹^ORCID,Han Zhulin¹,Yuan Jingyu¹,Xie Yuming¹²,Dong Jihong³,Xia Peiyun⁴,Huang Yongxian¹²^ORCID

Affiliation:

1. State Key Laboratory of Precision Welding & Joining of Materials and Structures, Harbin Institute of Technology, Harbin 150001, China

2. Zhengzhou Research Institute, Harbin Institute of Technology, Zhengzhou 450046, China

3. AVIC Manufacturing Technology Institute, Beijing 100024, China

4. Shanghai Aerospace Equipment Manufacturer Co., Ltd., Shanghai 200245, China

Abstract

Aiming at the repairing of keyhole defects after friction stir welding of complex structures, a new method combined with tungsten inert gas welding (TIG) and friction stir processing (FSP) was proposed. The results showed that the pre-filling wire of TIG can completely fill the volumetric keyhole. FSP can refine the coarse grain area into equiaxial grains due to dynamic recrystallization, while some pore defects are eliminated. The interface bonding quality is high. The microhardness of the repairing zone with FSP is significantly stronger than that of the untreated parts. Compared to direct TIG repairing, the introduction of FSP transformed the fracture from brittle fracture to ductile fracture, and the tensile strength of the joint was increased by 131.7%, realizing the high-quality repairing of keyhole defects in 2195 Al-Li alloy.

Funder

Natural Science Foundation of Heilongjiang Province of China

Publisher

MDPI AG

Link

https://www.mdpi.com/1996-1944/17/14/3418/pdf

Reference27 articles.

1. Lei, C., Wang, Q., Ebrahimi, M., Li, D., Tang, H., Zhang, N., and Cai, H. (2023). Hot Deformation Behavior and Processing Maps of an As-Cast Al-5Mg-3Zn-1Cu (wt%) Alloy. Materials, 16.

2. Recent developments in advanced aircraft aluminium alloys;Dursun;Mater. Des.,2014

3. Prasad, N.E., Gokhale, A.A., and Wanhill, R.J.H. (2014). Aerostructural design and its application to aluminum–lithium alloys. Aluminum-Lithium Alloys, Elsevier.

4. Kurpiel, S., Zagórski, K., Cieślik, J., and Skrzypkowski, K. (2023). Investigation of Selected Surface Topography Parameters and Deformation during Milling of Vertical Thin-Walled Structures from Titanium Alloy Ti6Al4V. Materials, 16.

5. Wang, Y. (2022). Auxetic Composite Laminates with Through-Thickness Negative Poisson’s Ratio for Mitigating Low Velocity Impact Damage: A Numerical Study. Materials, 15.