Grain size effect on the martensitic transformation of Ni50Mn25Ga17Cu8 high-temperature shape memory alloy

被引：12
作者：
Wang, Jingmin [1 ]
Han, Yongjun [1 ]
Hua, Hui [1 ]
Wang, Xiao [1 ]
Jiang, Chengbao [1 ]
机构：
[1] Beihang Univ, Sch Mat Sci & Engn, Minist Educ, Key Lab Aerosp Mat & Performance, Beijing 100191, Peoples R China
来源：
INTERMETALLICS | 2015年 / 61卷
基金：
北京市自然科学基金;
关键词：
Shape-memory alloys; Martensitic transformation; STABILIZATION; STRAIN;
D O I：
10.1016/j.intermet.2015.02.016
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Single crystal, coarse-grained and fine-grained polycrystals of Ni50Mn25Ga17Cu8 high-temperature shape memory alloy were prepared. Grain size effect on the martensitic transformation was investigated. Compared with the single crystal, the martensitic transformation temperatures were slightly decreased by coarse grains, but were greatly decreased by fine grains. Strong grain size dependence of the kinetics of the martensitic transformation was monitored. The average activation energy of the transformation required for the fine-grained polycrystal was nearly four times of that for the single crystal. (C) 2015 Elsevier Ltd. All rights reserved.
引用
收藏
页码：42 / 46
页数：5
相关论文
共 21 条
[1]   Thermal stability of high-temperature Ni-Mn-Ga alloys [J].
Cesari, E. ;
Font, J. ;
Muntasell, J. ;
Ochin, P. ;
Pons, J. ;
Santamarta, R. .
SCRIPTA MATERIALIA, 2008, 58 (04) :259-262
[2]   Superelasticity in high-temperature Ni-Mn-Ga alloys [J].
Chernenko, VA ;
L'vov, V ;
Pons, J ;
Cesari, E .
JOURNAL OF APPLIED PHYSICS, 2003, 93 (05) :2394-2399
[3]   Phase equilibria in the Ni-rich portion of the Ni-Ga binary system [J].
Ducher, R. ;
Kainuma, R. ;
Ishida, K. .
INTERMETALLICS, 2007, 15 (02) :148-153
[4]   INFLUENCE OF AUSTENITE GRAIN-SIZE ON GAMMA-EPSILON MARTENSITIC-TRANSFORMATION TEMPERATURE IN FE-MN-SI-CR ALLOYS [J].
JIANG, BH ;
SUN, LM ;
LI, RC ;
HSU, TY .
SCRIPTA METALLURGICA ET MATERIALIA, 1995, 33 (01) :63-68
[5]   Relationship between grain size and martensitic transformation start temperature in a Ti-30Ni-20Cu alloy ribbon [J].
Kang, Seok-won ;
Lee, Yong-hee ;
Lim, Yeon-min ;
Nam, Jung-min ;
Nam, Tae-hyun ;
Kim, Yeon-wook .
SCRIPTA MATERIALIA, 2008, 59 (11) :1186-1189
[6]   New aspects of martensite stabilization in Ni-Mn-Ga high-temperature shape memory alloy [J].
Khovaylo, V. ;
Kainuma, R. ;
Ishida, K. ;
Omori, T. ;
Miki, H. ;
Takagi, T. ;
Datesman, A. .
PHILOSOPHICAL MAGAZINE, 2008, 88 (06) :865-882
[7]   Phase transitions in Ni2+xMn1-xGa with a high Ni excess -: art. no. 224408 [J].
Khovaylo, VV ;
Buchelnikov, VD ;
Kainuma, R ;
Koledov, VV ;
Ohtsuka, M ;
Shavrov, VG ;
Takagi, T ;
Taskaev, SV ;
Vasiliev, AN .
PHYSICAL REVIEW B, 2005, 72 (22)
[8]  
Li YY, 2013, MAT SCI ENG A-STRUCT, V528, P256
[9]   6% magnetic-field-induced strain by twin-boundary motion in ferromagnetic Ni-Mn-Ga [J].
Murray, SJ ;
Marioni, M ;
Allen, SM ;
O'Handley, RC ;
Lograsso, TA .
APPLIED PHYSICS LETTERS, 2000, 77 (06) :886-888
[10]   Thermal and microstructural evolution under ageing of several high-temperature Ni-Mn-Ga alloys [J].
Santamarta, R. ;
Cesari, E. ;
Muntasell, J. ;
Font, J. ;
Pons, J. ;
Ochin, P. .
INTERMETALLICS, 2010, 18 (05) :977-983
123