Effect of Al Addition on Grain Refinement and Phase Transformation of the Mg-Gd-Y-Zn-Mn Alloy Containing LPSO Phase.
Effect of Al Addition on Grain Refinement and Phase Transformation of the Mg-Gd-Y-Zn-Mn Alloy Containing LPSO Phase.
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添加铝对含LPSO相的Mg - Gd - Y - Zn - Mn合金晶粒细化及相变的影响
DOI：
10.3390/ma15051632
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发表时间：
2022-02-22
期刊：
影响因子：
--
通讯作者：
Kamado S
中科院分区：
文献类型：
--
作者：
Zuo J;Zhang M;Nakata T;Wang G;Li D;Shi H;Xu C;Wang X;Li W;Fan G;Geng L;Kamado S
本工作研究了添加0 - 1.0 at.%的铝对含有长周期堆垛有序（LPSO）相的Mg - 2.0Gd - 1.2Y - 0.5Zn - 0.2Mn（at.%）合金的晶粒细化和相变的影响。铝的添加促进了Mg - 2.0Gd - 1.2Y - 0.5Zn - 0.2Mn（at.%）合金中Al₂RE相的形成，铸态Mg - 2.0Gd - 1.2Y - 0.5Zn - 0.2Mn - 1.0Al（at.%）合金中的主要第二相为Mg₃RE相、LPSO相和Al₂RE相。随着铝添加量的增加，Al₂RE相的面积分数单调增加，而LPSO相和Mg₃RE相的面积分数逐渐降低。确定Al₂RE相与α - Mg基体之间的取向关系为<112>Al₂RE//<110>α - Mg，{101}Al₂RE//{100}α - Mg，这不受Al₂RE相中Zn和Mn浓度的影响。由于位于晶粒中心、尺寸大于6μm的Al₂RE颗粒可作为α - Mg晶粒的形核剂，添加1.0%的铝后，铸态合金的平均晶粒尺寸从276μm减小到49μm。铝添加对Mg - 2.0Gd - 1.2Y - 0.5Zn - 0.2Mn合金晶粒细化的影响与锆细化的效果相当。
The effect of 0–1.0 at.% Al additions on grain refinement and phase transformation of the Mg-2.0Gd-1.2Y-0.5Zn-0.2Mn (at.%) alloy containing a long period stacking ordered (LPSO) phase was investigated in this work. The addition of Al promoted the formation of the Al2RE phase in the Mg-2.0Gd-1.2Y-0.5Zn-0.2Mn (at.%) alloy, and the dominant secondary phases in the as-cast Mg-2.0Gd-1.2Y-0.5Zn-0.2Mn-1.0Al (at.%) alloy were the Mg3RE phase, LPSO phase, and Al2RE phase. With increased Al addition, the area fraction of the Al2RE phase increased monotonously, while the area fraction of LPSO phase and Mg3RE phase decreased gradually. The orientation relationship between the Al2RE phase and the α-Mg matrix was determined to be <112>Al2RE//<110>α-Mg, {101}Al2RE//{100}α-Mg, which was not affected by Zn and Mn concentrations in the Al2RE phase. Since the Al2RE particles with a size more than 6 μm located at the center of grains could act as nucleants for α-Mg grains, the average grain size of the as-cast alloys decreased from 276 μm to 49 μm after 1.0% Al addition. The effect of the Al addition on the grain refinement of the Mg-2.0Gd-1.2Y-0.5Zn-0.2Mn alloy was comparable to that of the Zr refined counterpart.
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影响因子：
1.4
作者：
Qian, Ma;StJohn, D. H.
通讯作者：
StJohn, D. H.
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DOI：
10.1016/j.msea.2013.04.016
发表时间：
2013-08-01
影响因子：
6.4
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6.2
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影响因子：
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