Effect of Cryogenic Treatment on the Microstructure and Mechanical Properties of Extruded Mg-3.5Zn-0.6Gd Alloy

Abstract:

The effect of cryogenic treatment (CT) on the microstructure and mechanical properties of the as-extruded Mg–3.5Zn–0.6Gd alloy was investigated. The results showed that W-phase newly appeared in cryogenic treatment samples but without notable second phase amount increasing. There was also no remarkable grain refinement. But the amount of twins reduced greatly, the strong basal texture {0001} rotated and increased. The intensity of plane (0002) diffraction peak was weakened along with planes ( 1 0-1 0 ) ( 1 0-1 1 ) being enhanced in X-ray diffraction pattern. The change in mechanical properties was not obvious. The mechanism of the microstructure evolution is discussed as well.

• Periodical: Materials Science Forum (Volume 1035)
• Pages: 175-181
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.1035.175
• Online since: June 2021
• Authors: Qing Hao Zhang, Lan Luo, Yong Liu*, Zi Hui Xu
• Keywords: Cryogenic Treatment, Magnesium Alloy, Mechanical Properties, Precipitation Mechanism

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