Martensitic transformation, ductility, and shape-memory effect of polycrystalline Ni56Mn25-x-FexGa19 alloys

Yunqing Ma; Lihong Xu; Van Li; Chengbao Jiang; Huibin Xu; Young Kook Lee

doi:10.3139/146.101110

Martensitic transformation, ductility, and shape-memory effect of polycrystalline Ni₅₆Mn_25-x-Fe_xGa₁₉ alloys

Yunqing Ma, Lihong Xu, Van Li, Chengbao Jiang, Huibin Xu, Young Kook Lee

Department of Materials Science and Engineering

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

39 Citations (Scopus)

Abstract

Buttons of high-temperature shape-memory alloy Ni₅₆Mn _25-xFe_xGa₁₉ were prepared by arc melting under argon atmosphere. The specimens were hot rolled to 1 mm plates, and their martensitic transformation behaviors, ductilities, and shape-memory effects were investigated through differential scanning calorimetry and bending tests. It was found that the brittleness of polycrystalline Ni₂MnGa was ameliorated through introduction of a ductile phase by Fe addition. Ni ₅₆Mn₁₇Fe₈Ga₁₉ alloy shows great potential as a practical high-temperature shape-memory alloy with martensitc transformation start temperature above 200°C. It can bear strain of 6% before fracture in bending tests and shows a maximum reversible strain of 3.5%.

Original language	English
Pages (from-to)	843-847
Number of pages	5
Journal	Zeitschrift fuer Metallkunde/Materials Research and Advanced Techniques
Volume	96
Issue number	8
DOIs	https://doi.org/10.3139/146.101110
Publication status	Published - 2005 Aug

All Science Journal Classification (ASJC) codes

Condensed Matter Physics
Physical and Theoretical Chemistry
Metals and Alloys
Materials Chemistry

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title = "Martensitic transformation, ductility, and shape-memory effect of polycrystalline Ni56Mn25-x-FexGa19 alloys",

abstract = "Buttons of high-temperature shape-memory alloy Ni56Mn 25-xFexGa19 were prepared by arc melting under argon atmosphere. The specimens were hot rolled to 1 mm plates, and their martensitic transformation behaviors, ductilities, and shape-memory effects were investigated through differential scanning calorimetry and bending tests. It was found that the brittleness of polycrystalline Ni2MnGa was ameliorated through introduction of a ductile phase by Fe addition. Ni 56Mn17Fe8Ga19 alloy shows great potential as a practical high-temperature shape-memory alloy with martensitc transformation start temperature above 200°C. It can bear strain of 6% before fracture in bending tests and shows a maximum reversible strain of 3.5%.",

author = "Yunqing Ma and Lihong Xu and Van Li and Chengbao Jiang and Huibin Xu and Lee, {Young Kook}",

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T1 - Martensitic transformation, ductility, and shape-memory effect of polycrystalline Ni56Mn25-x-FexGa19 alloys

AU - Ma, Yunqing

AU - Xu, Lihong

AU - Li, Van

AU - Jiang, Chengbao

AU - Xu, Huibin

AU - Lee, Young Kook

PY - 2005/8

Y1 - 2005/8

N2 - Buttons of high-temperature shape-memory alloy Ni56Mn 25-xFexGa19 were prepared by arc melting under argon atmosphere. The specimens were hot rolled to 1 mm plates, and their martensitic transformation behaviors, ductilities, and shape-memory effects were investigated through differential scanning calorimetry and bending tests. It was found that the brittleness of polycrystalline Ni2MnGa was ameliorated through introduction of a ductile phase by Fe addition. Ni 56Mn17Fe8Ga19 alloy shows great potential as a practical high-temperature shape-memory alloy with martensitc transformation start temperature above 200°C. It can bear strain of 6% before fracture in bending tests and shows a maximum reversible strain of 3.5%.

AB - Buttons of high-temperature shape-memory alloy Ni56Mn 25-xFexGa19 were prepared by arc melting under argon atmosphere. The specimens were hot rolled to 1 mm plates, and their martensitic transformation behaviors, ductilities, and shape-memory effects were investigated through differential scanning calorimetry and bending tests. It was found that the brittleness of polycrystalline Ni2MnGa was ameliorated through introduction of a ductile phase by Fe addition. Ni 56Mn17Fe8Ga19 alloy shows great potential as a practical high-temperature shape-memory alloy with martensitc transformation start temperature above 200°C. It can bear strain of 6% before fracture in bending tests and shows a maximum reversible strain of 3.5%.

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Martensitic transformation, ductility, and shape-memory effect of polycrystalline Ni₅₆Mn_25-x-Fe_xGa₁₉ alloys

Abstract

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