Microstructure and mechanical properties of friction stir lap welded dissimilar zirconium-steel joint

Kuaishe Wang; Bing Wu; Ke Qiao; Hongduo Wang; Pai Peng; Peng Han; Chenxi Wang; Shanyong Chen; Liqiang Wang; Qiang Meng; Huaxia Zhao; Wen Wang

Journal of Materials Research and Technology (Nov 2020)

Microstructure and mechanical properties of friction stir lap welded dissimilar zirconium-steel joint

Kuaishe Wang,
Bing Wu,
Ke Qiao,
Hongduo Wang,
Pai Peng,
Peng Han,
Chenxi Wang,
Shanyong Chen,
Liqiang Wang,
Qiang Meng,
Huaxia Zhao,
Wen Wang

Affiliations

Kuaishe Wang: School of Metallurgical Engineering, National and Local Joint Engineering Research Center for Functional Materials Processing, Xi'an University of Architecture and Technology, Xi'an, 710055, China
Bing Wu: School of Metallurgical Engineering, National and Local Joint Engineering Research Center for Functional Materials Processing, Xi'an University of Architecture and Technology, Xi'an, 710055, China
Ke Qiao: School of Metallurgical Engineering, National and Local Joint Engineering Research Center for Functional Materials Processing, Xi'an University of Architecture and Technology, Xi'an, 710055, China; Corresponding author.
Hongduo Wang: School of Metallurgical Engineering, National and Local Joint Engineering Research Center for Functional Materials Processing, Xi'an University of Architecture and Technology, Xi'an, 710055, China
Pai Peng: School of Metallurgical Engineering, National and Local Joint Engineering Research Center for Functional Materials Processing, Xi'an University of Architecture and Technology, Xi'an, 710055, China
Peng Han: School of Metallurgical Engineering, National and Local Joint Engineering Research Center for Functional Materials Processing, Xi'an University of Architecture and Technology, Xi'an, 710055, China
Chenxi Wang: School of Metallurgical Engineering, National and Local Joint Engineering Research Center for Functional Materials Processing, Xi'an University of Architecture and Technology, Xi'an, 710055, China
Shanyong Chen: School of Metallurgical Engineering, National and Local Joint Engineering Research Center for Functional Materials Processing, Xi'an University of Architecture and Technology, Xi'an, 710055, China
Liqiang Wang: State Key Laboratory of Metal Matrix Composites, School of Material Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China
Qiang Meng: AVIC Manufacturing Technology Institute, Beijing, 100024, China; Beijing FSW Technology Co. Ltd, No.2 Wuxing N.Rd, Tongzhou District, Beijing, 101107, China
Huaxia Zhao: AVIC Manufacturing Technology Institute, Beijing, 100024, China; Beijing FSW Technology Co. Ltd, No.2 Wuxing N.Rd, Tongzhou District, Beijing, 101107, China
Wen Wang: School of Metallurgical Engineering, National and Local Joint Engineering Research Center for Functional Materials Processing, Xi'an University of Architecture and Technology, Xi'an, 710055, China; Corresponding author.

Journal volume & issue: Vol. 9, no. 6
pp. 15087 – 15093

Abstract

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Friction stir lap welding (FSLW) was employed to weld dissimilar joints of zirconium and stainless steel for the first time. The microstructure, evolution mechanism of intermetallic compounds (IMCs) and mechanical properties of joint were investigated. Discontinuous dynamic recrystallization (DDRX) and continuous dynamic recrystallization (CDRX) occurred in zirconium, while DDRX occurred in stainless steel during FSLW. The formation sequence of IMCs at the interface was FeZr3, FeZr2, Fe2Zr, and Fe23Zr6. The crack nucleated at the hook zone on the advancing side (HookAS), and IMCs in the Zr/SS mixed zone accelerated crack propagation. The fracture surface exhibited ductile-brittle mixed fracture characteristic.

Published in Journal of Materials Research and Technology

ISSN: 2238-7854 (Print); 2214-0697 (Online)
Publisher: Elsevier
Country of publisher: Netherlands
LCC subjects: Technology: Mining engineering. Metallurgy
Website: https://www.journals.elsevier.com/journal-of-materials-research-and-technology/

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