Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10656694 | Journal of Alloys and Compounds | 2011 | 6 Pages |
Abstract
In this paper, we report the microstructures and mechanical properties of a new quaternary Mg-6Zn-xCu-0.6Zr alloys (x = 0, 0.5, 1.0 and 2.0 wt.%). The alloy design was demonstrated to be sensitive to the level of Cu. An addition of 0.5 wt.% Cu augmented significantly the age-hardening response during isothermal ageing at 180 °C and yielded the optimal mechanical properties with UTS of 266.3 MPa, YS of 185.6 MPa and elongation of 16.7%. However, an addition of up to 2.0 wt.% led to the formation of continuous grain-boundary intermetallic particles, thus degrading the age-hardening response and the mechanical properties of the alloy. The microstructural factors associated with the improvements in the mechanical properties are discussed in detail.
Related Topics
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Metals and Alloys
Authors
H.M. Zhu, G. Sha, J.W. Liu, C.L. Wu, C.P. Luo, Z.W. Liu, R.K. Zheng, S.P. Ringer,