The role of Nd solid-solution and grain-boundary segregation in binary NiAl intermetallic compound

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	The role of Nd solid-solution and grain-boundary segregation in binary NiAl intermetallic compound
	W. L. Ren; J. T. Guo; G. S. Li; J. Y. Zhou
	2004
发表期刊	Journal of Materials Science & Technology
ISSN	1005-0302
卷号	20 期号:2 页码:163-166
摘要	The role of Nd solid-solution and grain-boundary segregation in binary NiAl alloy was studied based on microhardness and compressive macrostrain. X-ray and Auger spectra studies indicate that Nd not only is soluble in grain interiors, but also segregates to the grain boundaries. Nd solid-solution induces an increase of the microhardness from 269 to 290 HV in grain interiors and segregation results in an enhancement of hardness from 252 to 342 HV on grain boundaries. Thus, the cohesion of grain boundaries is enhanced by Nd segregation, which make the alloy doped with 0.05 wt pct Nd exhibit more compressive microstrain, i.e. the higher the compressive ductility at room temperature, the better the final surface condition at elevated temperature. Finally, a discussion was made on the reason that Nd strengthens the grain boundaries in NiAl intermetallic alloy.
部门归属	chinese acad sci, inst met res, shenyang 110016, peoples r china. dalian univ technol, dept mat engn, dalian 116024, peoples r china.;guo, jt (reprint author), chinese acad sci, inst met res, shenyang 110016, peoples r china;jtguo@imr.ac.cn
关键词	Nd Nial Alloys Solid-solution Grain-boundary Segregation Mechanical Properties Mechanical-properties Fracture Ni3al Microstructure Composites Alloy
URL	查看原文
WOS记录号	WOS:000220705300010
引用统计	被引频次：12[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/35534
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	W. L. Ren,J. T. Guo,G. S. Li,et al. The role of Nd solid-solution and grain-boundary segregation in binary NiAl intermetallic compound[J]. Journal of Materials Science & Technology,2004,20(2):163-166.
APA	W. L. Ren,J. T. Guo,G. S. Li,&J. Y. Zhou.(2004).The role of Nd solid-solution and grain-boundary segregation in binary NiAl intermetallic compound.Journal of Materials Science & Technology,20(2),163-166.
MLA	W. L. Ren,et al."The role of Nd solid-solution and grain-boundary segregation in binary NiAl intermetallic compound".Journal of Materials Science & Technology 20.2(2004):163-166.