|Microstructure and mechanical properties of Mg-Zn-Y-Nd-Zr alloys|
|J. Wang; R. D. Liu; X. G. Dong; Y. S. Yang
|Source Publication||Journal of Rare Earths
|Abstract||The microstructure and tensile properties of the as-cast and solution treatment Mg-4.5Zn-1Y-xNd-0.5Zr (x=0, 1 wt.%, 2 wt.%, 3 wt.%) alloys were investigated. The results showed that the microstructure of Mg-4.5Zn-1Y-0.5Zr alloy consisted of alpha-Mg, Zn-Zr, W (Mg3Y2Zn3) and I (Mg3YZn6) phases. With the addition of Nd, I-phase disappeared and Mg3Y2Zn3 phase changed into Mg-3(Nd, Y)(2)Zn-3 phase. When the content of Nd reached 3 wt.%, T phase, i.e., ternary Mg-Zn-Nd phase, formed. In addition, with the increase of Nd content in the alloys, the secondary dendritic arm spacing decreased, while the amount of intermetallic phases increased. For as-cast Mg-4.5Zn-1Y-xNd-0.5Zr alloys, after solution treatment, microsegregation was eliminated and the shape of eutectic structure of alpha-Mg+W transformed from lamellar into spherical. The tensile strength and elongation of Mg-4.5Zn-1Y-3Nd-0.5Zr alloy were increased from 219.2 MPa and 11.0% to 247.5 MPa and 20.0%, respectively.|
; liu ruidong
; dong xuguang
; yang yuansheng] chinese acad sci, inst met res, shenyang 110016, peoples r china. [yang yuansheng] shandong acad sci, new mat res inst, jinan 250014, peoples r china.
; yang, ys (reprint author), chinese acad sci, inst met res, shenyang 110016, peoples r china.
J. Wang,R. D. Liu,X. G. Dong,et al. Microstructure and mechanical properties of Mg-Zn-Y-Nd-Zr alloys[J]. Journal of Rare Earths,2013,31(6):616-621.
J. Wang,R. D. Liu,X. G. Dong,&Y. S. Yang.(2013).Microstructure and mechanical properties of Mg-Zn-Y-Nd-Zr alloys.Journal of Rare Earths,31(6),616-621.
J. Wang,et al."Microstructure and mechanical properties of Mg-Zn-Y-Nd-Zr alloys".Journal of Rare Earths 31.6(2013):616-621.
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