期刊
FUNCTIONAL MATERIALS LETTERS
卷 5, 期 4, 页码 -出版社
WORLD SCIENTIFIC PUBL CO PTE LTD
DOI: 10.1142/S1793604712500452
关键词
Iron-based shape memory alloys; heat treatment; precipitation; microstructure; fatigue
资金
- Deutsche Forschungsgemeinschaft [MA 1175/33-1]
- RFBR [12-08-9131-NNIO_a]
- U.S. National Science Foundation - International Materials Institutes Program [DMR 08-44082]
The cyclic deformation behavior of [001] oriented Fe-28Ni-17Co-11.5Al-2.5Ta (at.%) shape memory single crystals was investigated under tension. Dog-bone shaped specimens were tested up to 100 cycles after different aging heat treatments in order to characterize the cyclic stress-strain response and functional degradation. The smaller particles formed as a consequence of short aging for 1 h at 700 degrees C, as compared to longer aging for 7 h, resulted in significantly enhanced resistance to cyclic degradation.
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