Relationship between grain size and martensitic transformation start temperature in a Ti–30Ni–20Cu alloy ribbon

The relationship between the parent phase grain size and the B2–B19 martensitic transformation start temperature ( M s) was investigated in a Ti–30Ni–20Cu alloy ribbon fabricated by melt spinning. The average grain size of the ribbons increased from 0.7 to 1.2 μm with increasing crystallization temp...

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Bibliographic Details
Published in:Scripta materialia 2008-12, Vol.59 (11), p.1186-1189
Main Authors: Kang, Seok-won, Lee, Yong-hee, Lim, Yeon-min, Nam, Jung-min, Nam, Tae-hyun, Kim, Yeon-wook
Format: Article
Language:English
Subjects:
Crystallization
Grain size
Martensitic phase transformation
Martensitic transformations
Melt spinning
Metallic glasses
Parents
Precipitation
Ribbons
Shape memory alloys
Titanium base alloys
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Summary:The relationship between the parent phase grain size and the B2–B19 martensitic transformation start temperature ( M s) was investigated in a Ti–30Ni–20Cu alloy ribbon fabricated by melt spinning. The average grain size of the ribbons increased from 0.7 to 1.2 μm with increasing crystallization temperature from 748 to 823 K without significant compositional change and precipitation. M s increased from 308 to 317 K with increasing crystallization temperature from 748 to 823 K, which was ascribed to the increase in grain size.
ISSN:1359-6462
1872-8456
DOI:10.1016/j.scriptamat.2008.08.005