Effect of rare earth y addition on two-phase Ni53Mn 22Co6 Ga19 high-temperature shape memory alloy

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	Effect of rare earth y addition on two-phase Ni53Mn 22Co6 Ga19 high-temperature shape memory alloy
	Jiao, Xinquan ; Yang, Shuiyuan ; Su, Yu ; Yang SY(杨水源)
刊名	http://dx.doi.org/10.3139/146.110993
	2014
关键词	Fracture toughness Gallium Grain size and shape Manganese Martensitic transformations Microstructure Nickel Shape memory effect Yield stress
英文摘要	The microstructures, martensitic transformation, mechanical and shape memory properties of (Ni53Mn22Co6 Ga 19) 100-x Y x (x = 0, 0.1, 0.3) high-temperature shape memory alloys were investigated. It was found that small Y addition results in the refinement of grain size and the increase of c phase volume fraction. These changes can effectively improve the tensile ductility and fracture strength of two-phase Ni53Mn22Co 6-Ga19 alloy, up to the maximum values of 10.1% and 592 MPa respectively at x = 0.1. However, it is proposed that Y(Ni,Mn)4 Ga precipitate forms in the alloys with the addition of Y, and its amount increases with further increasing Y addition. The growth of the Y(Ni,Mn) 4 Ga precipitate results in a decrease in the tensile ductility at x = 0.3. Results further show that shape memory properties of the studied alloys are closely related to the refinement of grain size and the alloy yield strength. While adding 0.1 at.% of Y, the shape memory effect and recovery rate decrease, resulting from the refinement of grain size, compared to those of twophase Ni53Mn22Co6 Ga19 alloy. Subsequently they increase with further increasing Y content to 0.3 at.% due to the decrease in the alloy yield strength. ? Carl Hanser Verlag GmbH and Co. KG.
语种	英语
出版者	CARL HANSER VERLAG
内容类型	期刊论文
源URL	[http://dspace.xmu.edu.cn/handle/2288/87486]
专题	材料学院－已发表论文
推荐引用方式 GB/T 7714	Jiao, Xinquan,Yang, Shuiyuan,Su, Yu,et al. Effect of rare earth y addition on two-phase Ni53Mn 22Co6 Ga19 high-temperature shape memory alloy[J]. http://dx.doi.org/10.3139/146.110993,2014.
APA	Jiao, Xinquan,Yang, Shuiyuan,Su, Yu,&杨水源.(2014).Effect of rare earth y addition on two-phase Ni53Mn 22Co6 Ga19 high-temperature shape memory alloy.http://dx.doi.org/10.3139/146.110993.
MLA	Jiao, Xinquan,et al."Effect of rare earth y addition on two-phase Ni53Mn 22Co6 Ga19 high-temperature shape memory alloy".http://dx.doi.org/10.3139/146.110993 (2014).