Effect of Solution Temperature on the Microstructure and Mechanical Properties of a Newly Developed Superalloy TMW-4M3

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	Effect of Solution Temperature on the Microstructure and Mechanical Properties of a Newly Developed Superalloy TMW-4M3
	Z. H. Zhong; Y. F. Gu; Y. Yuan; T. Osada; C. Y. Cui; T. Yokokawa; T. Tetsui; H. Harada
	2012
发表期刊	Metallurgical and Materials Transactions a-Physical Metallurgy and Materials Science
ISSN	1073-5623
卷号	43A 期号:3 页码:1017-1025
摘要	The influence of solution temperature on the microstructure and mechanical properties of TMW-4M3 superalloy has been investigated. Comparisons of mechanical properties have also been made between the heat-treated TMW-4M3 variants and the commercial U720Li. The key microstructural variables examined were grain size and the volume fraction and size of the strengthening gamma' precipitates that control the mechanical properties of these alloys. By increasing the solution temperature from 1373 K to 1393 K (1100 A degrees C to 1120 A degrees C), the volume fraction of primary gamma prime dropped from 16.9 pct to 14.5 pct, whereas the average grain size increased from 8.7 mu m to 10.6 mu m. Compared with an alloy with a smaller grain size, the alloy with a larger grain size exhibited superior resistances to creep and fatigue crack growth without the expense of reduced tensile strength and low-cycle fatigue resistance. This suggested that a higher solution temperature may benefit TMW-4M3 in terms of superior overall properties. The greater overall properties of TMW-4M3 variants than that of commercial U720Li were also demonstrated experimentally. The possible explanations for the improvement of mechanical properties were discussed.
部门归属	[zhong, zhihong; gu, yuefeng; yuan, yong; osada, toshio; yokokawa, tadaharu; tetsui, toshimitsu; harada, hiroshi] natl inst mat sci, high temp mat unit, tsukuba, ibaraki 3050047, japan. [cui, chuanyong] china acad sci, inst met res, shenyang 110016, peoples r china.;zhong, zh (reprint author), natl inst mat sci, high temp mat unit, tsukuba, ibaraki 3050047, japan.;zhong.zhihong@nims.go.jp; gu.yuefeng@nims.go.jp
关键词	Ni-base Superalloy Low-cycle Fatigue Heat-treatment Cooling Precipitation Stainless-steel Yield Strength Udimet 720li Creep Behavior Alloy
URL	查看原文
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/60518
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	Z. H. Zhong,Y. F. Gu,Y. Yuan,et al. Effect of Solution Temperature on the Microstructure and Mechanical Properties of a Newly Developed Superalloy TMW-4M3[J]. Metallurgical and Materials Transactions a-Physical Metallurgy and Materials Science,2012,43A(3):1017-1025.
APA	Z. H. Zhong.,Y. F. Gu.,Y. Yuan.,T. Osada.,C. Y. Cui.,...&H. Harada.(2012).Effect of Solution Temperature on the Microstructure and Mechanical Properties of a Newly Developed Superalloy TMW-4M3.Metallurgical and Materials Transactions a-Physical Metallurgy and Materials Science,43A(3),1017-1025.
MLA	Z. H. Zhong,et al."Effect of Solution Temperature on the Microstructure and Mechanical Properties of a Newly Developed Superalloy TMW-4M3".Metallurgical and Materials Transactions a-Physical Metallurgy and Materials Science 43A.3(2012):1017-1025.