Effect of Phosphorus on Mechanical Properties and Thermal Stability of Fine-grained GH761 Alloy

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	Effect of Phosphorus on Mechanical Properties and Thermal Stability of Fine-grained GH761 Alloy
	S. L. Yang; W. R. Sun; J. X. Wang; Z. M. Ge; S. R. Guo; Z. Q. Hu
	2011
发表期刊	Journal of Materials Science & Technology
ISSN	1005-0302
卷号	27 期号:6 页码:539-545
摘要	The effect of phosphorus on mechanical properties and thermal stability of fine-grained GH761 alloy has been investigated. The results show that, when the content of phosphorus is in the range of 0.0007%-0.040%, there are no significant effects on the tensile properties. Phosphorus strongly affects the stress rupture life. The content of 0.023% P results in the longest life in this experiment. Compared with that of the alloy with 0.0007% P. the life is increased more than 2 times in the alloy with 0.023% P. After ageing at 700 degrees C for 1000 h, the life reduced to some extent. However, phosphorus exhibits the similar effect on the life as before ageing. The tensile properties of the alloy are not influenced by long term ageing obviously. The present results suggested that the optimum content of phosphorus is 0.023%. The phosphorus with this content can optimize the precipitates at the grain boundaries and prevent the excessive growth of the precipitates. The combining mechanical properties of GH761 alloy can be largely improved by phosphorus addition combined with grain refinement.
部门归属	[yang, shulin; sun, wenru; guo, shouren; hu, zhuangqi] chinese acad sci, inst met res, shenyang 110016, peoples r china. [yang, shulin; wang, jianxi; ge, zhimei] shenyang liming aeroengine corp, shenyang 110043, peoples r china.;sun, wr (reprint author), chinese acad sci, inst met res, shenyang 110016, peoples r china;wrsun@imr.ac.cn
关键词	Phosphorus Fine-grained Mechanical Properties Ageing Grain Boundaries Stress Rupture Properties Base Superalloy
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WOS记录号	WOS:000292781400011
引用统计	被引频次：27[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/321006/30829
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	S. L. Yang,W. R. Sun,J. X. Wang,et al. Effect of Phosphorus on Mechanical Properties and Thermal Stability of Fine-grained GH761 Alloy[J]. Journal of Materials Science & Technology,2011,27(6):539-545.
APA	S. L. Yang,W. R. Sun,J. X. Wang,Z. M. Ge,S. R. Guo,&Z. Q. Hu.(2011).Effect of Phosphorus on Mechanical Properties and Thermal Stability of Fine-grained GH761 Alloy.Journal of Materials Science & Technology,27(6),539-545.
MLA	S. L. Yang,et al."Effect of Phosphorus on Mechanical Properties and Thermal Stability of Fine-grained GH761 Alloy".Journal of Materials Science & Technology 27.6(2011):539-545.