Microstructure and Mechanical Properties of Pure Magnesium Subjected to Hot Extrusion

Weiwei Lei; Derong Zhu; Hongxia Wang; Wei Liang

doi:10.1007/s11595-019-2177-9

Journal of Wuhan University of Technology Materials Science Edition ›› 2019, Vol. 34 ›› Issue (5) : 1193 -1196. DOI: 10.1007/s11595-019-2177-9

Metallic Materials

Microstructure and Mechanical Properties of Pure Magnesium Subjected to Hot Extrusion

Weiwei Lei ¹^,²
, Derong Zhu ³
, Hongxia Wang ¹^,²^,^{^c}
, Wei Liang ¹^,²^,^{^d}

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Abstract

The as-cast pure magnesium (Mg), with a purity of 99.99%, was hot-extruded at 300 °C to prepare a Mg bar with a diameter of 8 mm. The microstructure and mechanical properties of the sample before and after extrusion were investigated. The results show that the as-extruded microstructure is obviously refined with a large number of subgrains rather than equiaxed grains. A great number of (102) tensile twins can be observed significantly in the microstructure at the temperature. Mechanical properties including yield strength (YS) and ultimate tensile strength (UTS) increase greatly but uniform elongation (UE) decreases slightly as a result of work hardening.

Keywords

microstructure / pure Mg / mechanical properties / hot extrusion

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Weiwei Lei,Derong Zhu,Hongxia Wang,Wei Liang. Microstructure and Mechanical Properties of Pure Magnesium Subjected to Hot Extrusion. Journal of Wuhan University of Technology Materials Science Edition, 2019, 34(5): 1193-1196 DOI:10.1007/s11595-019-2177-9