Martensite transformation in Ni-Mn-Ga ferromagnetic shape-memory alloys

被引：9
作者：
Richard, M. L.
Feuchtwanger, J.
Allen, S. M.
O'Handley, R. C.
Lazpita, P.
Barandiaran, J. M.
机构：
[1] MIT, Dept Mat Sci & Engn, Cambridge, MA 02139 USA
[2] Univ Basque Country, EHU, Dept Elect & Elect, Fac Sci & Technol, E-48080 Bilbao, Spain
来源：
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE | 2007年 / 38A卷 / 04期
关键词：
D O I：
10.1007/s11661-007-9097-6
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The crystal structure of Ni-Mn-Ga ferromagnetic shape-memory alloys is extremely sensitive to composition. Several martensitic structures including tetragonal (five-layered), orthorhombic (seven-layered), and nonmodulated tetragonal have been observed. Temperature-dependent X-ray diffraction measurements and calorimetry have revealed markedly different transformation behavior in the tetragonal and orthorhombic materials. The orthorhombic material shows a much larger difference between the martensite start and finish temperatures as compared to tetragonal martensite. The difference in transformation character can be explained from a thermodynamic standpoint by including the difference in the strain energy contribution for the two different martensite phases.
引用
收藏
页码：777 / 780
页数：4
相关论文
共 10 条
[1]   Giant field-induced reversible strain in magnetic shape memory NiMnGa alloy [J].
Heczko, O ;
Sozinov, A ;
Ullakko, K .
IEEE TRANSACTIONS ON MAGNETICS, 2000, 36 (05) :3266-3268
[2]   Empirical mapping of Ni-Mn-Ga properties with composition and valence electron concentration [J].
Jin, X ;
Marioni, M ;
Bono, D ;
Allen, SM ;
O'Handley, RC ;
Hsu, TY .
JOURNAL OF APPLIED PHYSICS, 2002, 91 (10) :8222-8224
[3]   Large cyclic magnetic-field-induced deformation in orthorhombic (14M) Ni-Mn-Ga martensite [J].
Müllner, P ;
Chernenko, VA ;
Kostorz, G .
JOURNAL OF APPLIED PHYSICS, 2004, 95 (03) :1531-1536
[4]   Large field induced strain in single crystalline Ni-Mn-Ga ferromagnetic shape memory alloy [J].
Murray, SJ ;
Marioni, MA ;
Kukla, AM ;
Robinson, J ;
O'Handley, RC ;
Allen, SM .
JOURNAL OF APPLIED PHYSICS, 2000, 87 (09) :5774-5776
[5]   Giant magnetic-field-induced strain in Ni-Mn-Ga crystals: Experimental results and modeling [J].
Murray, SJ ;
Marioni, M ;
Tello, PG ;
Allen, SM ;
O'Handley, RC .
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2001, 226 (PART I) :945-947
[6]   CRITERION FOR THE ACTION OF APPLIED STRESS IN THE MARTENSITIC TRANSFORMATION [J].
PATEL, JR ;
COHEN, M .
ACTA METALLURGICA, 1953, 1 (05) :531-538
[7]   Crystal structure and transformation behavior of Ni-Mn-Ga martensites [J].
Richard, M ;
Feuchtwanger, J ;
Schlagel, D ;
Lograsso, T ;
Allen, SM ;
O'Handley, RC .
SCRIPTA MATERIALIA, 2006, 54 (10) :1797-1801
[8]  
RICHARD M, 2006, UNPUB PHILOS MAG
[9]   Chemical segregation during bulk single crystal preparation of Ni-Mn-Ga ferromagnetic shape memory alloys [J].
Schlagel, DL ;
Wu, YL ;
Zhang, W ;
Lograsso, TA .
JOURNAL OF ALLOYS AND COMPOUNDS, 2000, 312 (1-2) :77-85
[10]   Giant magnetic-field-induced strain in NiMnGa seven-layered martensitic phase [J].
Sozinov, A ;
Likhachev, AA ;
Lanska, N ;
Ullakko, K .
APPLIED PHYSICS LETTERS, 2002, 80 (10) :1746-1748
1