Synthesis and characterization of Fe-Mn-Si shape memory alloy by mechanical alloying and subsequent sintering

Takeshi Saito, Cz Kapusta, Akito Takasaki

研究成果: Article

15 引用 (Scopus)

抄録

An Fe-Mn-Si bulk alloy was produced from elemental powders by mechanical alloying (MA) and subsequent sintering. The shape memory effect, microstructure and mechanical property of the bulk alloy were investigated. The α phase transformed into the γ phase during MA. The MA played an essential role in stabilizing the γ phase, which is associated with the shape memory effect in this alloy system. The γ phase with small amounts of ε and α' martensitic phases formed after subsequent sintering. After deformation, a γ→ε stress-induced martensitic phase transformation occurred. Shape recovery was observed after subsequent heating, associated with an ε→γ reverse martensitic transformation. The grain size of the bulk alloy was about 2-3. μm, and the yield strength was about 500. MPa. These results show that powder metallurgy, a combination of MA and subsequent sintering, has the potential to produce Fe-Mn-Si shape memory alloy.

元の言語English
ページ(範囲)88-94
ページ数7
ジャーナルMaterials Science and Engineering A
592
DOI
出版物ステータスPublished - 2014 1 13

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Mechanical alloying
shape memory alloys
Shape memory effect
alloying
sintering
Sintering
synthesis
powder metallurgy
Martensitic transformations
martensitic transformation
Powder metallurgy
yield strength
Powders
phase transformations
Yield stress
grain size
Phase transitions
recovery
mechanical properties
Heating

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanical Engineering
  • Mechanics of Materials

これを引用

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abstract = "An Fe-Mn-Si bulk alloy was produced from elemental powders by mechanical alloying (MA) and subsequent sintering. The shape memory effect, microstructure and mechanical property of the bulk alloy were investigated. The α phase transformed into the γ phase during MA. The MA played an essential role in stabilizing the γ phase, which is associated with the shape memory effect in this alloy system. The γ phase with small amounts of ε and α' martensitic phases formed after subsequent sintering. After deformation, a γ→ε stress-induced martensitic phase transformation occurred. Shape recovery was observed after subsequent heating, associated with an ε→γ reverse martensitic transformation. The grain size of the bulk alloy was about 2-3. μm, and the yield strength was about 500. MPa. These results show that powder metallurgy, a combination of MA and subsequent sintering, has the potential to produce Fe-Mn-Si shape memory alloy.",
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N2 - An Fe-Mn-Si bulk alloy was produced from elemental powders by mechanical alloying (MA) and subsequent sintering. The shape memory effect, microstructure and mechanical property of the bulk alloy were investigated. The α phase transformed into the γ phase during MA. The MA played an essential role in stabilizing the γ phase, which is associated with the shape memory effect in this alloy system. The γ phase with small amounts of ε and α' martensitic phases formed after subsequent sintering. After deformation, a γ→ε stress-induced martensitic phase transformation occurred. Shape recovery was observed after subsequent heating, associated with an ε→γ reverse martensitic transformation. The grain size of the bulk alloy was about 2-3. μm, and the yield strength was about 500. MPa. These results show that powder metallurgy, a combination of MA and subsequent sintering, has the potential to produce Fe-Mn-Si shape memory alloy.

AB - An Fe-Mn-Si bulk alloy was produced from elemental powders by mechanical alloying (MA) and subsequent sintering. The shape memory effect, microstructure and mechanical property of the bulk alloy were investigated. The α phase transformed into the γ phase during MA. The MA played an essential role in stabilizing the γ phase, which is associated with the shape memory effect in this alloy system. The γ phase with small amounts of ε and α' martensitic phases formed after subsequent sintering. After deformation, a γ→ε stress-induced martensitic phase transformation occurred. Shape recovery was observed after subsequent heating, associated with an ε→γ reverse martensitic transformation. The grain size of the bulk alloy was about 2-3. μm, and the yield strength was about 500. MPa. These results show that powder metallurgy, a combination of MA and subsequent sintering, has the potential to produce Fe-Mn-Si shape memory alloy.

KW - Martensitic transformations

KW - Mechanical alloying

KW - Mechanical characterization

KW - Powder metallurgy

KW - Shape memory alloy

KW - X-ray diffraction

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