Analysis of Ti–Ni–Hf shape memory alloys by combinatorial nanocalorimetry

The martensitic transformation in Ti–Ni–Hf thin films with ultra-fine grain structure has been analyzed as a function of composition using a high-throughput array of nanocalorimeters. The martensite–austenite transformation temperature is significantly lower than in bulk Ti–Ni–Hf, but increases line...

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Veröffentlicht in:Acta materialia 2011-12, Vol.59 (20), p.7602-7614
Hauptverfasser: Motemani, Yahya, McCluskey, Patrick J., Zhao, Chunwang, Tan, Ming J., Vlassak, Joost J.
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Sprache:eng
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Zusammenfassung:The martensitic transformation in Ti–Ni–Hf thin films with ultra-fine grain structure has been analyzed as a function of composition using a high-throughput array of nanocalorimeters. The martensite–austenite transformation temperature is significantly lower than in bulk Ti–Ni–Hf, but increases linearly with Hf content at a rate comparable to bulk Ti–Ni–Hf. The response to high-temperature cycling (22°C
ISSN:1359-6454
1873-2453
DOI:10.1016/j.actamat.2011.08.026