Negative Poisson's ratio in Heusler-type Cu–Al–Mn shape memory alloy

研究成果: Article査読

3 被引用数 (Scopus)

抄録

A negative Poisson's ratio refers to the phenomenon of a material expanding along the transverse direction upon uniaxial tension. Here, we show a negative Poisson's ratio observed directly by experiments in a single-crystal Heusler-type Cu–16.9Al–11.6Mn (at%) shape memory alloy, in addition to the alloy's superelasticity. When stretched along the vicinity of the [110] direction, the alloy expands along the [11¯0] direction, showing a significant negative Poisson's ratio of −0.51, while shrinking along the [001] direction with a large positive Poisson's ratio of 1.36. These experimental results agree well with the values calculated from the elastic constants and elastic anisotropy.

本文言語English
ページ(範囲)74-78
ページ数5
ジャーナルScripta Materialia
177
DOI
出版ステータスPublished - 2020 3 1

ASJC Scopus subject areas

  • 材料科学(全般)
  • 凝縮系物理学
  • 材料力学
  • 機械工学
  • 金属および合金

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