抄録
We analyzed the surface relief caused by stress-induced hcp martensitic transformation in Fe-30Mn-5Si-1A1 shape memory alloy by atomic force microscopy. The alloy exhibits a good shape memory effect and an improved ductility due to a small addition of Al to a conventional Fe-30Mn-6Si shape memory alloy. The orientation of an austenite matrix was determined with surface traces of four {111}f planes, which enabled us to determine the surface tilt angles for all twelve variants of hep martensites and deformation twins. On the basis of these values, stress-induced martensite and deformation twin coexisting in the same grain were identified by studying the surface tilt angles. The surface relieves caused by the stress-induced martensite recovered after heating above the reversed transformation temperature, however some relieves originating from the deformation twin remained.
本文言語 | English |
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ページ(範囲) | 812-816 |
ページ数 | 5 |
ジャーナル | Materials Transactions |
巻 | 49 |
号 | 4 |
DOI | |
出版ステータス | Published - 2008 4月 |
外部発表 | はい |
ASJC Scopus subject areas
- 材料科学(全般)
- 凝縮系物理学
- 材料力学
- 機械工学