Influence of Phosphorus Microalloying on the Microstructure and Mechanical Properties of DA761 Superalloy

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	Influence of Phosphorus Microalloying on the Microstructure and Mechanical Properties of DA761 Superalloy
	Z. Q. Hu; W. R. Sun; S. L. Yang; S. R. Guo; H. C. Yang
	2009
发表期刊	Materials Transactions
ISSN	1345-9678
卷号	50 期号:7 页码:1638-1643
摘要	Effects of phosphorus microalloying on the microstructure and mechanical properties of direct-aging DA761 alloy have been studied. The aim of this work is to find a new way to develop a higher performance of wrought superalloy. The optimum addition of phosphorus in DA761 alloy is determined by investigating effects of phosphorus and boron on the microstructure and properties of DA761 alloy, that are compared to GH761 alloy treated by standard heat treatment. The stability of microstructure and properties of fine-grain DA761 alloy with optimum content of phosphorus is proved by studying the evolution of microstructure and properties of the alloy after long-term high temperature ageing. The practicability of phosphorus microalloying in improving the mechanical properties of DA761 alloy is verified by smelting a 500 kg ingot and detecting the microstructure and properties of billet near the size of engine disk. The results verify the phosphorus microalloying and fine-grain direct aging treatment in improving commercial GH761 alloy. Mechanism of phosphorus microalloying is also discussed. [doi: 10.2320/matertrans.MF200908]
部门归属	[hu, zhuangqi; sun, wenru; yang, shulin; guo, shouren] chinese acad sci, inst met res, shenyang 110016, peoples r china. [yang, hongcai] northeastern univ, shenyang 110004, peoples r china.;hu, zq (reprint author), chinese acad sci, inst met res, shenyang 110016, peoples r china
关键词	Phosphorus Gh761 Alloy Fine-grain Treatment Mechanical Property Trace-elements
URL	查看原文
WOS记录号	WOS:000269029000013
引用统计	被引频次：6[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/321006/31975
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	Z. Q. Hu,W. R. Sun,S. L. Yang,et al. Influence of Phosphorus Microalloying on the Microstructure and Mechanical Properties of DA761 Superalloy[J]. Materials Transactions,2009,50(7):1638-1643.
APA	Z. Q. Hu,W. R. Sun,S. L. Yang,S. R. Guo,&H. C. Yang.(2009).Influence of Phosphorus Microalloying on the Microstructure and Mechanical Properties of DA761 Superalloy.Materials Transactions,50(7),1638-1643.
MLA	Z. Q. Hu,et al."Influence of Phosphorus Microalloying on the Microstructure and Mechanical Properties of DA761 Superalloy".Materials Transactions 50.7(2009):1638-1643.