Influence of processing route on microstructure and mechanical properties of two Mg-Ni-Y-RE alloys

被引：8
作者：
Gonzalez, S. [1 ]
Garces, G. [1 ]
Adeva, P. [1 ]
Perez, P. [1 ]
机构：
[1] CSIC, Dept Met Fis, Ctr Nacl Invest Met, CENIM, E-28040 Madrid, Spain
来源：
MATERIALS CHARACTERIZATION | 2012年 / 64卷
关键词：
Magnesium alloys; Microstructure; Powder metallurgy; Mechanical properties; Fracture; PERIOD ORDERED STRUCTURE; CRYSTALLIZATION;
D O I：
10.1016/j.matchar.2011.12.001
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The effect of the processing route on the microstructure and mechanical properties of two Mg-Ni-Y-CeMM alloys has been evaluated. The alloys processed by a powder metallurgy route presented higher strength, thanks to the finer grain size and more homogeneous dispersion of second-phase particles. In the alloys prepared by hot extrusion of as-cast rods, hardening induced by coarse second-phase particles was higher due to load transfer from the magnesium matrix towards the particles. Irrespective of the processing route, the absence of decohesion between the different interfaces in the Mg-Ni-Y-CeMM alloys evidenced their inherent strong nature. (C) 2011 Elsevier Inc. All rights reserved.
引用
收藏
页码：53 / 61
页数：9
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