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High-strength gradient Ti-Ni-Cu-Pd ribbon with large recoverable strain and high cyclic stability under load
- Li, Hang;
- Gao, Zhe;
- Bai, Xingxing;
- Jin, Yongming;
- Meng, Xianglong;
- ... Jang, Jae-il;
- 외 2명
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1초록
Bulk Ti-Ni-Cu-Pd alloys show decent thermal- and load-cycling stability, yet low strength and limited recoverable strain. Here, we design a gradient Ti-Ni-Cu-Pd ribbon via nanoscale dual-phase (nanocrystalline-amorphous) engineering. The ribbon achieves 1-2x higher strength than bulk austenite while delivering similar to 4% fully recoverable strain (bulk well below 3%). Under high load, the strain amplitude declines only 0.5-0.7% after 10 loading cycles, demonstrating exceptional cyclic stability. These properties arise from phase synergy across the gradient architecture, enabling compact, high-force, repeatable actuators. [GRAPHICS]
키워드
Shape memory alloys; recoverable strain; cyclic stability; nanoindentation; SHAPE-MEMORY ALLOYS; MARTENSITIC-TRANSFORMATION; METALLIC GLASSES; HYSTERESIS; NANOINDENTATION; MICROSTRUCTURE
- 제목
- High-strength gradient Ti-Ni-Cu-Pd ribbon with large recoverable strain and high cyclic stability under load
- 저자
- Li, Hang; Gao, Zhe; Bai, Xingxing; Jin, Yongming; Meng, Xianglong; Cai, Wei; Suh, Jin-Yoo; Jang, Jae-il
- 발행일
- 2026-03
- 유형
- Article; Early Access
- 저널명
- MATERIALS RESEARCH LETTERS
- 권
- 14
- 호
- 3
- 페이지
- 267 ~ 275