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
	2005
发表期刊	Materials Science and Technology
ISSN	0267-0836
卷号	21 期号:7 页码:824-830
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.
部门归属	chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china.;guo, jt (reprint author), chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china;jtguo@imr.ac.cn
关键词	Ni3al(Zr) Alloy Mechanical Properties Environmental Embrittlement Recrystallisation Treatment Low-expansion Superalloy Embrittlement Dependence Ductility
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WOS记录号	WOS:000231222600010
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/34914
专题	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.