Pile-up and sink-in in micro-indentation of a NiTi shape-memory alloy

Pile-up and sink-in in micro-indentation of a NiTi shape-memory alloy

A series of micro-indentation tests were carried out on a NiTi shape-memory alloy. It was found that, at high temperatures, the resultant indents were pile-up; while at low temperatures, they were sink-in. However, upon heating, all indents were pile-up. The mechanism behind this surprising phenomen...

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Veröffentlicht in:Scripta materialia 2005-11, Vol.53 (9), p.1055-1057
Hauptverfasser: Huang, W.M., Su, J.F., Hong, M.H., Yang, B.
Format: Artikel
Sprache:eng
Schlagworte:
Applied sciences
Exact sciences and technology
Indentation
Metals. Metallurgy
Phase transformation
Pile-up
Shape memory alloy
Sink-in
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Beschreibung
Zusammenfassung:A series of micro-indentation tests were carried out on a NiTi shape-memory alloy. It was found that, at high temperatures, the resultant indents were pile-up; while at low temperatures, they were sink-in. However, upon heating, all indents were pile-up. The mechanism behind this surprising phenomenon is explained.
ISSN:1359-6462
1872-8456
DOI:10.1016/j.scriptamat.2005.07.005