The ductility and shape-memory properties of Ni-Mn-Co-Ga high-temperature shape-memory alloys

CORC > 厦门大学 > 材料学院－已发表论文

	The ductility and shape-memory properties of Ni-Mn-Co-Ga high-temperature shape-memory alloys
	Ma, Y. Q. ; Yang, S. Y. ; Liu, Y. ; Liu, X. J. ; Ma YQ(马云庆)
刊名	http://dx.doi.org/10.1016/j.actamat.2009.03.025
	2009-06
关键词	PHASE-TRANSFORMATION TEMPERATURES FIELD-INDUCED STRAIN MARTENSITIC-TRANSFORMATION MECHANICAL-PROPERTIES SINGLE-CRYSTALS FE NI54MN25GA21 FRACTURE NI2MNGA
英文摘要	Ni-Mn-Co-Ga alloys with Ni/Mn or Ni and Mn substituted by Co were investigated as candidates for high-temperature shape-memory alloys. Ni(56-x)Co(x)Mn(25)Ga(19) alloys with x < 8 consist of single phase martensite, whereas Ni(56-x)Co(x)Mn(25)Ga(19) (x >= 8), Ni(56)Mn(25-y) Co(y)Ga(19) (y = 4,8) and Ni(56-z/2)Mn(25-z/2)Co(z)Ga(19) (z = 4,6) alloys consist of a two-phase mixture of martensite and gamma phase. The mechanical and shape-memory properties of Ni(56)Mn(25-y)Co(y)Ga(19) and Ni(56-z/2)Mn(25-z/2)Co(z)Ga(19) alloys, which were hot-rolled into 0.5 mm thin plates by conventional hot rolling process, were investigated. The ductility and hot-workability of Ni-Mn-CO-Ga alloys were greatly improved by increasing the amount of ductile y phase. Dynamic tensile tests and scanning electron microscopy observations of fracture surfaces confirm that the existence of y phase plays a key role in improving the ductility of Ni-Mn-Co-Ga alloys. (C) 2009 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
语种	英语
内容类型	期刊论文
源URL	[http://dspace.xmu.edu.cn/handle/2288/59935]
专题	材料学院－已发表论文
推荐引用方式 GB/T 7714	Ma, Y. Q.,Yang, S. Y.,Liu, Y.,et al. The ductility and shape-memory properties of Ni-Mn-Co-Ga high-temperature shape-memory alloys[J]. http://dx.doi.org/10.1016/j.actamat.2009.03.025,2009.
APA	Ma, Y. Q.,Yang, S. Y.,Liu, Y.,Liu, X. J.,&马云庆.(2009).The ductility and shape-memory properties of Ni-Mn-Co-Ga high-temperature shape-memory alloys.http://dx.doi.org/10.1016/j.actamat.2009.03.025.
MLA	Ma, Y. Q.,et al."The ductility and shape-memory properties of Ni-Mn-Co-Ga high-temperature shape-memory alloys".http://dx.doi.org/10.1016/j.actamat.2009.03.025 (2009).