Influence of Heat Treatment on Microstrudture and Mechanical Properties of AZ31B Magnesium Alloy Prepared by Solid-State Recycling

Shu Yan Wu; Ze Sheng Ji; Chun Ying Tian; Ming Zhong Wu

doi:10.4028/www.scientific.net/AMM.271-272.17

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 271-272Influence of Heat Treatment on Microstrudture and...

Influence of Heat Treatment on Microstrudture and Mechanical Properties of AZ31B Magnesium Alloy Prepared by Solid-State Recycling

Abstract:

This work is to study the influence of heat treatment on microstrudture and mechanical properties of AZ31B magnesium alloy prepared by solid -state recycling. AZ31B magnesium alloy chips were recycled by hot extruding. Three different heat treatments were conducted for recycled alloy. Mechanical properties and microstructure of the recycled specimen and heat treated specimen were investigated. 300°C×2h annealing specimen exhibits finer grain due to static recrystallization, and microstructure of 400°C×2h annealing specimen becomes more coarse. 300°C×2h annealing treatment improves obviously strength and ductility of recycled alloy. Ultimate tensile strength of alloy decreases and elongation to failure increases after 400°C×2h annealing. Grain size, dislocation density and bonding of chips have an effect on the elongation of recycled materials. 190°C×8h ageing has no influence on microstructure and mechanical properties of recycled alloy.

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Applied Mechanics and Materials (Volumes 271-272)

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17-20

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https://doi.org/10.4028/www.scientific.net/AMM.271-272.17

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Online since:

December 2012

Authors:

Shu Yan Wu, Ze Sheng Ji, Chun Ying Tian, Ming Zhong Wu

Keywords:

AZ31B Magnesium Alloy, Heat Treatment, Mechanical Property, Microstructure, Solid-State Recycling

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