Consolidation of mechanically milled TiAl alloys by spark plasma sintering

被引：0
|
作者：
Hwang, SJ [1 ]
Kim, MS [1 ]
Jung, SY [1 ]
Kim, SS [1 ]
Oh, MH [1 ]
机构：
[1] Daejin Univ, Dept Mat Sci & Engn, Pocheon 487711, South Korea
来源：
METASTABLE, MECHANICALLY ALLOYED AND NANOCRYSTALLINE MATERIALS | 2003年
关键词：
consolidation; intermetallic compounds; mechanical milling; spark plasma sintering SPS; gamma-TiAl;
D O I：
暂无
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
In this study, newly developed spark plasma sintering (SPS) technique was introduced to refine grain size of gamma-based TiAl intermetallic compounds. Two prealloyed Ti-46Al-1.5Mo and Ti-46Al-1.5Mo-0.2C(at.%) powders were produced by mechanical milling in high-energy attritor. The mechanically milled powders were characterized by XRD and SEM for the microstructural evolution as a function of milling time. And then, the NMed powders were consolidated by vacuum hot pressing and spark plasma sintering, resulting in the microstructure consisting of the equiaxed gamma-TiAl and alpha(2)-Ti3Al grains, with a few hundred nanometer in average size. The effects of the consolidation techniques on the microstructures and mechanical properties of the MMed materials were discussed.
引用
收藏
页码：361 / 366
页数：6
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