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

Xiangchen Meng, Xi Chen, Zhulin Han, Jingyu Yuan, Yuming Xie, Jihong Dong, Peiyun Xia, Yongxian Huang

Abstract read

In one paragraph

Article in Materials (Basel, Switzerland), 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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5 · Who and what money

Authors and funding

8 authors.

Xiangchen MengState Key Laboratory of Precision Welding & Joining of Materials and Structures, Harbin Institute of Technology, Harbin 150001, China.ORCID 0000-0002-2392-2740

Xi ChenState Key Laboratory of Precision Welding & Joining of Materials and Structures, Harbin Institute of Technology, Harbin 150001, China.ORCID 0009-0004-5151-1713

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

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

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

Jihong DongAVIC Manufacturing Technology Institute, Beijing 100024, China.

Peiyun XiaShanghai Aerospace Equipment Manufacturer Co., Ltd., Shanghai 200245, China.

Yongxian HuangState Key Laboratory of Precision Welding & Joining of Materials and Structures, Harbin Institute of Technology, Harbin 150001, China.ORCID 0000-0003-0682-5321

Funding

Natural Science Foundation of Heilongjiang Province of China LH2022E058

6 · The paper itself

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.

Indexed as

2195 Al-Li alloyfriction stir processingkeyholemechanical propertiestungsten inert gas welding

Identifiers

PMID39063710

DOI10.3390/ma17143418

PMCPMC11278362

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LicenceCC BY

Read underepoch 390

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.