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2008•Journal of Changchun University of TechnologyRequires access

The effect of heat treatment process on the microstructure and mechanical properties of Mg-RE-Zn-Zr alloy

Limin Wang

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Abstract

Mg-RE-Zn-Zr alloy [RE= Ce-40La(wt%) rich cerium rare earth] is prepared under the gas protection,and is with heat treatment.The hardness,tensile strength and elongation,and other mechanical properties at different states are tested by means of optical microscopy,X-Ray diffraction and Scanning Electron Microscopy analysis.The structural feature and fracture behavior of the investigated alloys were revealed.The results showed that after T6 heat treatment,the grain size of the alloy is significantly refined and the hardness,tensile strength yield strength and elongation are obviously improved by 11%,24%,7.3%,102% respectively.

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What this paper is about

Mg-RE-Zn-Zr alloy [RE= Ce-40La(wt%) rich cerium rare earth] is prepared under the gas protection,and is with heat treatment.The hardness,tensile strength and elongation,and other mechanical properties at different states are tested by means of optical microscopy,X-Ray diffraction and Scanning Electron Microscopy analysis.The structural feature and fracture behavior of the investigated alloys were revealed.The results showed that after T6 heat treatment,the grain size of the alloy is significantly refined and the hardness,tensile strength yield strength and elongation are obviously improved by 11%,24%,7.3%,102% respectively.

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Available abstract

Mg-RE-Zn-Zr alloy [RE= Ce-40La(wt%) rich cerium rare earth] is prepared under the gas protection,and is with heat treatment.The hardness,tensile strength and elongation,and other mechanical properties at different states are tested by means of optical microscopy,X-Ray diffraction and Scanning Electron Microscopy analysis.The structural feature and fracture behavior of the investigated alloys were revealed.The results showed that after T6 heat treatment,the grain size of the alloy is significantly refined and the hardness,tensile strength yield strength and elongation are obviously improved by 11%,24%,7.3%,102% respectively.

Key concepts: Materials science, Ultimate tensile strength, Alloy, Microstructure, Elongation, Cerium, Scanning electron microscope, Optical microscope

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