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

Euh, Kwangjun (Structural Materials Division, Korea Institute of Materials Science)
Lee, Jung-Moo (Structural Materials Division, Korea Institute of Materials Science)
Nam, Duk-Hyun (Center for Advanced Aerospace Materials, Pohang University of Science and Technology)
Lee, Sunghak (Center for Advanced Aerospace Materials, Pohang University of Science and Technology)
Publication Information
Korean Journal of Metals and Materials / v.47, no.12, 2009 , pp. 787-796 More about this Journal
Abstract
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 (SEM) chamber. The Ni-Mn-Ga-Fe alloys contained a considerable amount of ductile particles in the grains after the homogenization treatment at $800{\sim}1100^{\circ}C$. ${\gamma}$ particles were coarsened and distributed homogeneously along {$\beta}$ 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.
Keywords
Ni-Mn-Ga-Fe; Magnetic shape memory alloy; Fracture toughness; Homogenization treatment; R-curve;
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1 R. D. James and M. Wuttig, Philos. Mag. A 77, 1273(1998)   DOI
2 L. Manosa, A. Planes, M. Acet, E. Duman, and E. F. Wassermann, J. Appl. Phys. 93, 8498 (2003)   DOI   ScienceOn
3 S. N. Kaul, B. Annie D’Santhoshini, A. C. Abhyankar, and P. Henry, Appl. Phys. Lett. 89, 093119 (2006)   DOI   ScienceOn
4 K. Oikawa, L.Wulff, T. Iijima, F. Gejima, T. Omori, A. Fujita, and K. Fukamichi, Appl. Phys. Lett. 79, 3290(2001)   DOI   ScienceOn
5 J. Font, J. Muntasell, R. Santamarta, F. Masdeu, and J. Pons, Mater. Sci. Eng. A 438-440, 919 (2006)   DOI   ScienceOn
6 K. Oikawa, T. Ota, T. Omori, H. Morito, A. Fujita, R. Kainuma, K. Fukamichi, and K. Ishida, Appl. Phys. Lett. 81, 5201 (2002)   DOI   ScienceOn
7 K. Euh, J.-M. Lee, and S. B. Kang, 2007 Fall Conference Abstracts, p.196, Korean Inst. Metals & Mater., Korea(2007)
8 B. C. Kim, S. Lee, D. Y. Lee, and N. J. Kim, Metall. Mater. Trans. A 22A, 1889 (1991)   DOI
9 P. D. Zavattieri and H. D. Espinosa, Acta Mater. 49, 4291(2001)   DOI   ScienceOn
10 Y. X. Li, H. Y. Liu, F. B. Meng, and L. Q. Yan, Appl. Phys. Lett. 84, 3594 (2002)   DOI   ScienceOn
11 Y. Q. Ma, L. H. Xu, Y. Li, C. B. Jiang, and H. B. Xu, Z. Metallkd. 96, 843 (2005)   DOI
12 K. Lee, S.-B. Lee, S.-K. Lee, and S. Lee, J. Kor. Inst. Met. & Mater. 47, 542 (2009)
13 R. Santamarta, J. Font, J. Muntasell, and F. Masdeu, Scripta Mater. 54, 1105 (2006)   DOI   ScienceOn
14 S. J. Murray, M. Marioni, S.M. Allen, R. C. O’Handley, and T. A. Lograsso, Appl. Phys. Lett. 77, 886 (2000)   DOI   ScienceOn
15 J. M. McNaney, R. M. Cannon, and R. O. Ritchie, Acta Mater. 44, 4713 (1996)   DOI   ScienceOn
16 T. Kakeshita, T. Takeuchi, T. Fukuda, T. Saburi, R. Oshima, S. Muto, and K. Kishio, Mater. Trans. JIM. 41, 882 (2000)   DOI
17 Y. Sutou, N. Kamiya, T. Omori, R. Kainuma, K. Ishida, and K. Oikawa, Appl. Phys. Lett. 84, 1275 (2004)   DOI   ScienceOn
18 S. Chatrerjee, M. Thakur, S. Giri, S. Majumdar, A. K. Deb, and S. K. De, J. Alloy Comp. 456, 96 (2008)   DOI   ScienceOn
19 J. -M. Lee, Y. -M. Oh, K. Euh, and S. B. Kang, Metals and Materials Int. 15, 459 (2009)   DOI   ScienceOn
20 Y.-H. Kim, D. Kwon, and S. Lee, Acta Metall. Mater. 42, 1887 (1994)   DOI   ScienceOn
21 K. Ullakko, J. K. Huang, C. Kantner, R. C. O'Handley, and V. V. Kokorin, Appl. Phys. Lett. 69, 1966 (1996)   DOI   ScienceOn
22 A. Sozinov, A. A. Likhachev, N. Lanska, and K. Ullako, Appl. Phys. Lett. 80, 1746 (2002)   DOI   ScienceOn
23 Y. Sutou, Y. Imano, N. Koeda, T. Omori, K. Ishida, and K. Oikawa, Appl. Phys. Lett. 85, 4358 (2004)   DOI   ScienceOn
24 H. J. Yu, X. T. Zu, H. Fu, X. Y. Zhang, and Z. G. Wang, J. Alloy Comp. 470, 237 (2009)   DOI   ScienceOn