The microstructure and martensitic transformation of Co-Ni-Ga-Ta ferromagnetic shape memory alloys

被引：16

作者：

Liu, J ^{[1
]}

Zheng, HX ^{[1
]}

Xia, MX ^{[1
]}

Li, JG ^{[1
]}

机构：

[1] Shanghai Jiao Tong Univ, Sch Mat Sci & Engn, Shanghai 200030, Peoples R China

来源：

SCRIPTA MATERIALIA | 2005年 / 52卷 / 10期

基金：

中国国家自然科学基金;

关键词：

ferromagnetic shape memory alloys; martensitic transformation; microstructure;

D O I：

10.1016/j.scriptamat.2005.01.041

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The effect of the fourth element Ta on the microstructure, crystal structure and microstructure transformation Of (Co45Ni25Ga30)1 Ta--x(x)(x = 0, 0.5,2,5) alloys was investigated. Some Ta-rich precipitates were observed in the higher Ta-addition samples, which lead to the decrease of the martensitic transformation temperatures and thermal hysteresis. In addition, 1423 K annealing temperature is not high enough to impede the presence of gamma-phase in Co-Ni-Ga-Ta alloys, and 1473 K heat treatment temperature is needed. (c) 2005 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：955 / 958

页数：4

共 21 条

[1] Transformation behaviour and martensite stabilization in the ferromagnetic Co-Ni-Ga Heusler alloy [J].

Chernenko, VA ;

Pons, J ;

Cesari, E ;

Zasimchuk, IK .

SCRIPTA MATERIALIA, 2004, 50 (02) :225-229

[2] Martensitic transformation in Co2NiGa ferromagnetic shape memory alloys [J].

Craciunescu, C ;

Kishi, Y ;

Lograsso, TA ;

Wuttig, M .

SCRIPTA MATERIALIA, 2002, 47 (04) :285-288

[3] TiNiNb wide hysteresis shape memory alloy with low niobium content [J].

He, XM ;

Rong, LJ ;

Yan, DS ;

Li, YY .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2004, 371 (1-2) :193-197

[4] Temperature variation of structure and magnetic properties of Ni-Mn-Ga magnetic shape memory alloys [J].

Heczko, O ;

Lanska, N ;

Soderberg, O ;

Ullakko, K .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2002, 242 :1446-1449

[5]

JACJSON CM, 1972, NASASP, V5110, P57

[6] Effect of Ni excess on phase transformation temperatures of NiMnGa alloys [J].

Jiang, CB ;

Feng, G ;

Gong, SK ;

Xu, HB .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2003, 342 (1-2) :231-235

[7] Shape memory effect of grain refined Ni54Mn25Ga21 alloy with high transformation temperature [J].

Li, Y ;

Xin, Y ;

Jiang, CB ;

Xu, HB .

SCRIPTA MATERIALIA, 2004, 51 (09) :849-852

[8] EFFECT OF REFRACTORY ALLOYING ADDITIONS ON MECHANICAL-PROPERTIES OF NEAR-STOICHIOMETRIC NIAL [J].

LIU, CT ;

HORTON, JA .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 1995, 192 :170-178

[9] Martensitic transformation and magnetic properties in Heusler CoNiGa magnetic shape memory alloys [J].

Liu, J ;

Zheng, HX ;

Xia, MX ;

Huang, YL ;

Li, JG .

SCRIPTA MATERIALIA, 2005, 52 (09) :935-938

[10] Martensitic transformation of Ni-Mn-Ga(C, Si, Ge) Heusler alloys [J].

Lu, X ;

Chen, X ;

Qiu, L ;

Qin, Z .

JOURNAL DE PHYSIQUE IV, 2003, 112 :917-920

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