Mechanical behaviour of Zr doped Ni3Al alloy: effects of heat treatment, environment, and temperature

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	Mechanical behaviour of Zr doped Ni3Al alloy: effects of heat treatment, environment, and temperature
	Y. F. Li ; J. T. Guo ; H. Q. Ye
刊名	Materials Science and Technology
	2005
卷号	21 期号:7 页码:824-830
关键词	Ni3Al(Zr) alloy mechanical properties environmental embrittlement recrystallisation treatment low-expansion superalloy embrittlement dependence ductility
ISSN号	0267-0836
中文摘要	The mechanical behaviour of polycrystalline Ni76Al23Zr alloy was studied as a function of heat treatment, environment, and temperature. It was found that the tensile ductility was very sensitive to temperature, the alloy showing low ductility at temperatures' from 700 to 1000 degrees C both in air and vacuum. Environmental embrittlement could be alleviated for those specimens with elongated grains. The ductile transgranular fracture was explained by stress concentration at the intersection of slip bands and grain boundaries. It was also found that an oxide layer, formed during tensile testing at elevated temperature, affected the environmental embrittlement of Ni3Al(Zr) alloy. An adherent Al rich oxide film was effective in protecting the underlying alloy from oxygen penetration.
原文出处	://WOS:000231222600010
公开日期	2012-04-14
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/34914]
专题	金属研究所_中国科学院金属研究所
推荐引用方式 GB/T 7714	Y. F. Li,J. T. Guo,H. Q. Ye. Mechanical behaviour of Zr doped Ni3Al alloy: effects of heat treatment, environment, and temperature[J]. Materials Science and Technology,2005,21(7):824-830.
APA	Y. F. Li,J. T. Guo,&H. Q. Ye.(2005).Mechanical behaviour of Zr doped Ni3Al alloy: effects of heat treatment, environment, and temperature.Materials Science and Technology,21(7),824-830.
MLA	Y. F. Li,et al."Mechanical behaviour of Zr doped Ni3Al alloy: effects of heat treatment, environment, and temperature".Materials Science and Technology 21.7(2005):824-830.