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Metals 2017, 7(4), 125; doi:10.3390/met7040125

Microstructural Characteristics and Mechanical Properties of 2205/AZ31B Laminates Fabricated by Explosive Welding

School of Material Science and Engineering, Taiyuan University of Science and Technology, 66 Waliu Road, 030024 Taiyuan, China
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Author to whom correspondence should be addressed.
Academic Editor: Ian Baker
Received: 26 February 2017 / Revised: 24 March 2017 / Accepted: 28 March 2017 / Published: 4 April 2017
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Abstract

A bimetal composite of 2205 duplex stainless steel and AZ31B magnesium alloy was cladded successfully through the method of explosive welding. The microstructural characteristics and mechanical properties of 2205/AZ31B bimetal composite are discussed. The interface of 2205/AZ31B bimetallic composite was a less regular wavy morphology with locally melted pockets. Adiabatic shear bands occurred only in the AZ31B side near explosive welding interface. The microstructure observed with EBSD showed a strong refinement near the interface zones. Line scan confirmed that the interface had a short element diffusion zone which would contribute to the metallurgical bonding between 2205 duplex stainless steel and AZ31B magnesium alloy. The value of micro-hardness near the bonding interface of composite plate increased because of work hardening and grain refinement. The tensile shear strength of bonding interface of 2205/AZ31B composite was 105.63 MPa. Tensile strength of 2205/AZ31B composite material was higher than the base AZ31B. There were two abrupt drops in stress in the stress–strain curves of the 2205/AZ31B composite materials. View Full-Text
Keywords: 2205 duplex stainless steel; AZ31B magnesium alloy; explosive welding; interface microstructure; mechanical properties 2205 duplex stainless steel; AZ31B magnesium alloy; explosive welding; interface microstructure; mechanical properties
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MDPI and ACS Style

Li, Y.; Wu, Z. Microstructural Characteristics and Mechanical Properties of 2205/AZ31B Laminates Fabricated by Explosive Welding. Metals 2017, 7, 125.

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