Ｆｅ‐３０Ｍｎ‐５Ｓｉ‐１Ａｌ合金における塑性変形様式の連続遷移

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タイトル別名
  • Continuous Transition of Deformation Mode in Fe-30Mn-5Si-1Al Alloy
  • Fe-30Mn-5Si-1Al合金における塑性変形様式の連続遷移
  • Fe 30Mn 5Si 1Al ゴウキン ニ オケル ソセイ ヘンケイ ヨウシキ ノ レンゾク センイ
  • Continuous transition of deformation modes in Fe-30Mn-5Si-1Al alloy

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説明

Deformation modes at various stages of plastic deformation have been investigated at identical locations in an Fe-30Mn-5Si-1Al (mass%) alloy specimen, which exhibits a good shape memory effect associated with FCC(γ)→HCP(ε) martensitic transformation and relatively high ductility caused by deformation twinning. The surface relief caused by γ→ε martensitic transformation, deformation twinning and slip band formation has been analyzed by measuring surface tilt angles corresponding to each deformation mode by atomic force microscopy. Although ε-martensitic transformation is the dominant deformation mode in the early deformation stage, a part of the ε-martensite plates changes to deformation twins with the increase of deformation volume. Slip deformation also occurs inside the same region under excessive strain. The continuous transition of these deformation modes also occurs in the other grains in the same order: ε martensite→deformation twins→slip bands.<br>

収録刊行物

  • 日本金属学会誌

    日本金属学会誌 73 (3), 174-179, 2009

    公益社団法人 日本金属学会

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