Mechanical and shape memory properties of Ni43Co 7Mn39Sn11 alloy compacts fabricated by pressureless sintering

K. Ito; W. Ito; R. Y. Umetsu; I. Karaman; K. Ishida; R. Kainuma

doi:10.1016/j.scriptamat.2010.08.046

Mechanical and shape memory properties of Ni₄₃Co ₇Mn₃₉Sn₁₁ alloy compacts fabricated by pressureless sintering

K. Ito, W. Ito, R. Y. Umetsu, I. Karaman, K. Ishida, R. Kainuma

Research output: Contribution to journal › Article › peer-review

17 Citations (Scopus)

Abstract

Mechanical and shape memory properties of Ni₄₃Co ₇Mn₃₉Sn₁₁ metamagnetic shape memory sintering compacts, fabricated by pressureless sintering, were investigated. With sintering time the porosity drastically decreases and the ductility is significantly enhanced compared to the samples obtained by conventional induction melting. Moreover, the fracture strain in the specimen sintered at 1173 K for 144 h is almost the same as that in the high density sintering compacts by spark plasma sintering. Interestingly, the shape memory effect decreases with decreasing porosity.

Original language	English
Pages (from-to)	1236-1239
Number of pages	4
Journal	Scripta Materialia
Volume	63
Issue number	12
DOIs	https://doi.org/10.1016/j.scriptamat.2010.08.046
Publication status	Published - 2010 Dec

Keywords

Martensitic transformation
Metamagnetic shape memory alloys
Powder metallurgy
Pressureless sintering

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering
Metals and Alloys

Access to Document

10.1016/j.scriptamat.2010.08.046

Cite this

@article{8437499fc19547b781504783e82c78fc,

title = "Mechanical and shape memory properties of Ni43Co 7Mn39Sn11 alloy compacts fabricated by pressureless sintering",

abstract = "Mechanical and shape memory properties of Ni43Co 7Mn39Sn11 metamagnetic shape memory sintering compacts, fabricated by pressureless sintering, were investigated. With sintering time the porosity drastically decreases and the ductility is significantly enhanced compared to the samples obtained by conventional induction melting. Moreover, the fracture strain in the specimen sintered at 1173 K for 144 h is almost the same as that in the high density sintering compacts by spark plasma sintering. Interestingly, the shape memory effect decreases with decreasing porosity.",

keywords = "Martensitic transformation, Metamagnetic shape memory alloys, Powder metallurgy, Pressureless sintering",

author = "K. Ito and W. Ito and Umetsu, {R. Y.} and I. Karaman and K. Ishida and R. Kainuma",

note = "Funding Information: This study was supported by Grant-in-Aids and the Japan–U.S. Cooperative Science Program from the Japanese Society for the Promotion of Science (JSPS) , and by the Global COE Program . I.K. acknowledges the support from the U.S. National Science Foundation{\textquoteright}s Division of Materials Research Metal & Metallic Nanostructure Program, Grant No. 0909170 , under the umbrella of the NSF Materials World Network Initiative.",

year = "2010",

month = dec,

doi = "10.1016/j.scriptamat.2010.08.046",

language = "English",

volume = "63",

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journal = "Scripta Materialia",

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T1 - Mechanical and shape memory properties of Ni43Co 7Mn39Sn11 alloy compacts fabricated by pressureless sintering

AU - Ito, K.

AU - Ito, W.

AU - Umetsu, R. Y.

AU - Karaman, I.

AU - Ishida, K.

AU - Kainuma, R.

N1 - Funding Information: This study was supported by Grant-in-Aids and the Japan–U.S. Cooperative Science Program from the Japanese Society for the Promotion of Science (JSPS) , and by the Global COE Program . I.K. acknowledges the support from the U.S. National Science Foundation’s Division of Materials Research Metal & Metallic Nanostructure Program, Grant No. 0909170 , under the umbrella of the NSF Materials World Network Initiative.

PY - 2010/12

Y1 - 2010/12

N2 - Mechanical and shape memory properties of Ni43Co 7Mn39Sn11 metamagnetic shape memory sintering compacts, fabricated by pressureless sintering, were investigated. With sintering time the porosity drastically decreases and the ductility is significantly enhanced compared to the samples obtained by conventional induction melting. Moreover, the fracture strain in the specimen sintered at 1173 K for 144 h is almost the same as that in the high density sintering compacts by spark plasma sintering. Interestingly, the shape memory effect decreases with decreasing porosity.

AB - Mechanical and shape memory properties of Ni43Co 7Mn39Sn11 metamagnetic shape memory sintering compacts, fabricated by pressureless sintering, were investigated. With sintering time the porosity drastically decreases and the ductility is significantly enhanced compared to the samples obtained by conventional induction melting. Moreover, the fracture strain in the specimen sintered at 1173 K for 144 h is almost the same as that in the high density sintering compacts by spark plasma sintering. Interestingly, the shape memory effect decreases with decreasing porosity.

KW - Martensitic transformation

KW - Metamagnetic shape memory alloys

KW - Powder metallurgy

KW - Pressureless sintering

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