Interfacial characteristics and nano-mechanical properties of dissimilar 304 austenitic stainless steel/AZ31B Mg alloy welding joint

Tingting Zhang, Wenxian Wang, Jun Zhou, Zhifeng Yan, Jie Zhang

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Due to their distinct physical and metallurgical properties, using conventional fusion welding to direct join steel and magnesium alloy without interlayer metal faces many challenges. In this study, dissimilar joining of a 304 austenitic stainless steel/AZ31B magnesium alloy (304/AZ31B)cladding plate was successfully obtained by explosive welding. A periodic and half-wavy shaped joint was observed at the AZ31B side, while the interface was maintained straight at the 304 side. Microstructure characteristics in the half-wavy shaped joint were analyzed thoroughly by using SEM, EBSD and TEM. The results show that columnar crystals were found at the bottom of the welded joint while fine equiaxed grains were presented in its center, which is similar to that in a fusion joint. The TEM results showed that a thin diffusion layer (80 nm)was formed on the surface of 304 flyer plate. The diffusion at the surface of the 304 plate and melting-solidification near the AZ31B side showed that the AZ31B and 304 were metallurgically bonded. The formation mechanism of the dissimilar welded joint was further discussed and explained by studing the nano-mechanical properties of joint.

Original languageEnglish (US)
Pages (from-to)257-265
Number of pages9
JournalJournal of Manufacturing Processes
Volume42
DOIs
StatePublished - Jun 1 2019

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Alloy steel
Austenitic stainless steel
Magnesium alloys
Welding
Welds
Fusion reactions
Explosive welding
Transmission electron microscopy
Mechanical properties
Joining
Solidification
Melting
Crystals
Microstructure
Scanning electron microscopy
Metals
Magnesium
Fusion
Steel
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All Science Journal Classification (ASJC) codes

  • Strategy and Management
  • Management Science and Operations Research
  • Industrial and Manufacturing Engineering

Cite this

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title = "Interfacial characteristics and nano-mechanical properties of dissimilar 304 austenitic stainless steel/AZ31B Mg alloy welding joint",
abstract = "Due to their distinct physical and metallurgical properties, using conventional fusion welding to direct join steel and magnesium alloy without interlayer metal faces many challenges. In this study, dissimilar joining of a 304 austenitic stainless steel/AZ31B magnesium alloy (304/AZ31B)cladding plate was successfully obtained by explosive welding. A periodic and half-wavy shaped joint was observed at the AZ31B side, while the interface was maintained straight at the 304 side. Microstructure characteristics in the half-wavy shaped joint were analyzed thoroughly by using SEM, EBSD and TEM. The results show that columnar crystals were found at the bottom of the welded joint while fine equiaxed grains were presented in its center, which is similar to that in a fusion joint. The TEM results showed that a thin diffusion layer (80 nm)was formed on the surface of 304 flyer plate. The diffusion at the surface of the 304 plate and melting-solidification near the AZ31B side showed that the AZ31B and 304 were metallurgically bonded. The formation mechanism of the dissimilar welded joint was further discussed and explained by studing the nano-mechanical properties of joint.",
author = "Tingting Zhang and Wenxian Wang and Jun Zhou and Zhifeng Yan and Jie Zhang",
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Interfacial characteristics and nano-mechanical properties of dissimilar 304 austenitic stainless steel/AZ31B Mg alloy welding joint. / Zhang, Tingting; Wang, Wenxian; Zhou, Jun; Yan, Zhifeng; Zhang, Jie.

In: Journal of Manufacturing Processes, Vol. 42, 01.06.2019, p. 257-265.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Interfacial characteristics and nano-mechanical properties of dissimilar 304 austenitic stainless steel/AZ31B Mg alloy welding joint

AU - Zhang, Tingting

AU - Wang, Wenxian

AU - Zhou, Jun

AU - Yan, Zhifeng

AU - Zhang, Jie

PY - 2019/6/1

Y1 - 2019/6/1

N2 - Due to their distinct physical and metallurgical properties, using conventional fusion welding to direct join steel and magnesium alloy without interlayer metal faces many challenges. In this study, dissimilar joining of a 304 austenitic stainless steel/AZ31B magnesium alloy (304/AZ31B)cladding plate was successfully obtained by explosive welding. A periodic and half-wavy shaped joint was observed at the AZ31B side, while the interface was maintained straight at the 304 side. Microstructure characteristics in the half-wavy shaped joint were analyzed thoroughly by using SEM, EBSD and TEM. The results show that columnar crystals were found at the bottom of the welded joint while fine equiaxed grains were presented in its center, which is similar to that in a fusion joint. The TEM results showed that a thin diffusion layer (80 nm)was formed on the surface of 304 flyer plate. The diffusion at the surface of the 304 plate and melting-solidification near the AZ31B side showed that the AZ31B and 304 were metallurgically bonded. The formation mechanism of the dissimilar welded joint was further discussed and explained by studing the nano-mechanical properties of joint.

AB - Due to their distinct physical and metallurgical properties, using conventional fusion welding to direct join steel and magnesium alloy without interlayer metal faces many challenges. In this study, dissimilar joining of a 304 austenitic stainless steel/AZ31B magnesium alloy (304/AZ31B)cladding plate was successfully obtained by explosive welding. A periodic and half-wavy shaped joint was observed at the AZ31B side, while the interface was maintained straight at the 304 side. Microstructure characteristics in the half-wavy shaped joint were analyzed thoroughly by using SEM, EBSD and TEM. The results show that columnar crystals were found at the bottom of the welded joint while fine equiaxed grains were presented in its center, which is similar to that in a fusion joint. The TEM results showed that a thin diffusion layer (80 nm)was formed on the surface of 304 flyer plate. The diffusion at the surface of the 304 plate and melting-solidification near the AZ31B side showed that the AZ31B and 304 were metallurgically bonded. The formation mechanism of the dissimilar welded joint was further discussed and explained by studing the nano-mechanical properties of joint.

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