Microstructure and room temperature mechanical properties of Hf and Sn-doped Nb-20Ti-5Cr-3Al-18Si alloy

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	Microstructure and room temperature mechanical properties of Hf and Sn-doped Nb-20Ti-5Cr-3Al-18Si alloy
	J. T. Guo; Y. X. Tian; L. Y. Sheng; L. Z. Zhou; H. Q. Ye
	2008
发表期刊	International Journal of Materials Research
ISSN	1862-5282
卷号	99 期号:11 页码:1275-1279
摘要	In this paper, the effects of Sn and Hf additions on microstructures and room temperature mechanical properties of Nb-20Ti-5Cr-3Al-18Si alloy were investigated. The Sn addition has no significant effect on the microstructure of the alloy. Sn is preferentially partitioned in (Nb, Ti)ss rather than (Nb, Ti)(5)Si(3). The addition of Sn decreases the solubility of Cr in (Nb, Ti)ss. The addition of Hf causes coarsening of the eutectic structure of (Nb, Ti)ss and (Nb, Ti)(5)Si(3) and the formation of the Hf-rich gamma(Nb, Ti)(5)Si(3) along phase boundaries. With the addition of Sn the strength of the alloy decreases, while its ductility increases slightly. The Hf addition simultaneously improves strength and ductility of the alloy. The relationships between composition, microstructure and properties are discussed.
部门归属	[guo, j. t.] chinese acad sci, inst met res, superalloy div, shenyang 110016, peoples r china.;guo, jt (reprint author), chinese acad sci, inst met res, superalloy div, 72 wenhua rd, shenyang 110016, peoples r china;jtguo@imr.ac.cn
关键词	Intermetallics Microstructure Mechanical Properties In-situ Composites Silicide-based Composites Crack-growth Nb Fracture Toughness Strength Behavior
URL	查看原文
WOS记录号	WOS:000261506100012
引用统计	被引频次：5[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/321006/32782
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	J. T. Guo,Y. X. Tian,L. Y. Sheng,et al. Microstructure and room temperature mechanical properties of Hf and Sn-doped Nb-20Ti-5Cr-3Al-18Si alloy[J]. International Journal of Materials Research,2008,99(11):1275-1279.
APA	J. T. Guo,Y. X. Tian,L. Y. Sheng,L. Z. Zhou,&H. Q. Ye.(2008).Microstructure and room temperature mechanical properties of Hf and Sn-doped Nb-20Ti-5Cr-3Al-18Si alloy.International Journal of Materials Research,99(11),1275-1279.
MLA	J. T. Guo,et al."Microstructure and room temperature mechanical properties of Hf and Sn-doped Nb-20Ti-5Cr-3Al-18Si alloy".International Journal of Materials Research 99.11(2008):1275-1279.