Microfracture Mechanism and Fracture Properties of Ni-Mn-Ga-Fe Ferromagnetic Shape Memory Alloys

被引：0

作者：

Euh, Kwangjun ^{[1
]}

Lee, Jung-Moo ^{[1
]}

Nam, Duk-Hyun ^{[2
]}

Lee, Sunghak ^{[2
]}

机构：

[1] Korea Inst Mat Sci, Struct Mat Div, Chang Won 641010, South Korea

[2] Pohang Univ Sci & Technol, Ctr Adv Aerosp Mat, Pohang 790784, South Korea

来源：

JOURNAL OF THE KOREAN INSTITUTE OF METALS AND MATERIALS | 2009年 / 47卷 / 12期

关键词：

Ni-Mn-Ga-Fe; Magnetic shape memory alloy; Fracture toughness; Homogenization treatment; R-curve; FIELD-INDUCED STRAIN; MARTENSITIC-TRANSFORMATION; SINGLE-CRYSTALS; MAGNETOSTRICTION; PHASE;

D O I：

暂无

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The fracture toughness improvement of Ni-Mn-Ga-Fe ferromagnetic shape memory alloys containing ductile particles was explained by direct observation of microfracture processes using an in situ loading stage installed inside a scanning electron microscope (SEW chamber. The Ni-Mn-Ga-Fe alloys contained a considerable amount of ductile particles in the grains after the homogenization treatment at 800 similar to 1100 degrees C. gamma particles were coarsened and distributed homogeneously along P grain boundaries as well as inside beta grains as the homogenization temperature increased. The in situ microfracture observation results indicated that gamma particles effectively acted as blocking sites of crack propagation, and provided stable crack growth that could be confirmed by the R-curve analysis. This increase in fracture resistance with increasing crack length improved overall fracture properties of the alloys containing gamma particles.

引用

页码：787 / 796

页数：10

共 50 条

[21] Ferromagnetic shape memory Ni-Mn-Ga alloys: a new synergy between structure and properties
Righi, L.
Fabbrici, S.
Villa, E.
Albertini, F.
Coduri, M.
Tuissi, A.
METALLURGIA ITALIANA, 2015, (02): : 39 - 46
[22] Compton scattering studies of Mn-rich Ni-Mn-Ga ferromagnetic shape memory alloys
Ahuja, B. L.
Ahmed, Gulzar
Banik, S.
Itou, M.
Sakurai, Y.
Barman, S. R.
PHYSICAL REVIEW B, 2009, 79 (21)
[23] Phase transformation and magnetic properties of Ni-Mn-Ga-Ti ferromagnetic shape memory alloys
Dong, G. F.
Gao, Z. Y.
Tan, C. L.
Sui, J. H.
Cai, W.
JOURNAL OF ALLOYS AND COMPOUNDS, 2010, 508 (01) : 47 - 50
[24] Studies on ferromagnetic shape memory Ni-Mn-Ga alloys with Fe and rare-earths additives
Singh, R. K.
Raja, M. Manivel
Mathur, R. P.
Shamsuddin, M.
JOURNAL OF ALLOYS AND COMPOUNDS, 2010, 506 (01) : 73 - 76
[25] Site preference of magnetic atoms in Ni-Mn-Ga-M (M=Co, Fe) ferromagnetic shape memory alloys
Ayila, Satish Kumar
Machavarapu, Ramudu
Vummethala, Seshubai
PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS, 2012, 249 (03): : 620 - 626
[26] Ni-Mn-Ga-(Co, Fe, Cu) high temperature ferromagnetic shape memory alloys: Effect of Mn and Ga replacement by Cu
Perez-Checa, A.
Feuchtwanger, J.
Barandiaran, J. M.
Sozinov, A.
Ullakko, K.
Chernenko, V. A.
SCRIPTA MATERIALIA, 2018, 154 : 131 - 133
[27] Laser beam interaction with Ni-Mn-Ga ferromagnetic shape memory alloys
Craciunescu, C. M.
Miranda, R. M.
Silva, R. J. C.
Assuncao, E.
Braz Fernandes, F. M.
OPTICS AND LASERS IN ENGINEERING, 2011, 49 (11) : 1289 - 1293
[28] Stress Wave Propagation in Ni-Mn-Ga Ferromagnetic Shape Memory Alloys
Pandi, Rajasabai Senthur
Chokkalingam, Ramalingam
Mahendran, Manickam
JAPANESE JOURNAL OF APPLIED PHYSICS, 2011, 50 (07)
[29] Effect of the chemical composition to martensitic transformation in Ni-Mn-Ga-Fe alloys
Koho, K
Söderberg, O
Lanska, N
Ge, Y
Liu, X
Straka, L
Vimpari, J
Heczko, O
Lindroos, VK
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2004, 378 (1-2): : 384 - 388
[30] Martensite Transformation in Ni-Mn-Ga Ferromagnetic Shape-Memory Alloys
M. L. Richard
J. Feuchtwanger
S. M. Allen
R. C. O’handley
P. Lázpita
J. M. Barandiaran
Metallurgical and Materials Transactions A, 2007, 38 : 777 - 780

← 1 2 3 4 5 →