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
收藏
页码：787 / 796
页数：10
相关论文
共 50 条
  • [31] The kinetics of phase transformations in ferromagnetic shape memory alloys Ni-Mn-Ga
    Buchelnikov, VD
    Bosko, SI
    JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2003, 258 : 497 - 499
  • [32] 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
  • [33] Phase transformation and microstructures in Ni-Mn-Ga ferromagnetic shape memory alloys
    Tsuchiya, K
    Nakamura, H
    Ohtoyo, D
    Nakayama, H
    Umemoto, M
    Ohtsuka, H
    JOURNAL DE PHYSIQUE IV, 2001, 11 (PR8): : 263 - 268
  • [34] 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)
  • [35] Martensite transformation in Ni-Mn-Ga ferromagnetic shape-memory alloys
    Richard, M. L.
    Feuchtwanger, J.
    Allen, S. M.
    O'Handley, R. C.
    Lazpita, P.
    Barandiaran, J. M.
    METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 2007, 38A (04): : 777 - 780
  • [36] 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
  • [37] Determining the liquidus and ordering temperatures of the ternary Ni-Mn-Ga and quaternary Ni-Mn-Ga-Fe/Cu alloys
    Aaltio, I.
    Soderberg, O.
    Friman, M.
    Glavatskyy, I.
    Ge, Y.
    Glavatska, N.
    Hannula, S-P.
    ESOMAT 2009 - 8TH EUROPEAN SYMPOSIUM ON MARTENSITIC TRANSFORMATIONS, 2009,
  • [38] Magnetic and structural properties of non-stoichiometric Ni-Mn-Ga ferromagnetic shape memory alloys
    P. Lázpita
    J. M. Barandiarán
    J. Gutiérrez
    M. Richard
    S. M. Allen
    R. C. O'Handley
    The European Physical Journal Special Topics, 2008, 158 : 149 - 154
  • [39] Magnetic and structural properties of non-stoichiometric Ni-Mn-Ga ferromagnetic shape memory alloys
    Lazpita, P.
    Barandiaran, J. M.
    Gutierrez, J.
    Richard, M.
    Allen, S. M.
    O'Handley, R. C.
    EUROPEAN PHYSICAL JOURNAL-SPECIAL TOPICS, 2008, 158 (1): : 149 - 154
  • [40] Magneto-mechanical performance and mechanical properties of Ni-Mn-Ga ferromagnetic shape memory alloys
    Murray, SJ
    Allen, SM
    O'Handley, RC
    Lograsso, TA
    SMART STRUCTURES AND MATERIALS 2000 - ACTIVE MATERIALS: BEHAVIOR AND MECHANICS, 2000, 3992 : 387 - 395
12345