Mechanical and shape-memory behavior of homogenized NiTiHfPd alloys
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART L-JOURNAL OF MATERIALS-DESIGN AND APPLICATIONS, cilt.237, sa.5, ss.974-980, 2023 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 237 Sayı: 5
- Basım Tarihi: 2023
- Doi Numarası: 10.1177/14644207221130579
- Dergi Adı: PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART L-JOURNAL OF MATERIALS-DESIGN AND APPLICATIONS
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, ABI/INFORM, Aerospace Database, Communication Abstracts, Compendex, INSPEC, Metadex, Civil Engineering Abstracts
- Sayfa Sayıları: ss.974-980
- Anahtar Kelimeler: Superelasticity, high strength, shape-memory alloy, NiTiHfPd, martensite
- Erciyes Üniversitesi Adresli: Evet
Özet
Mechanical behavior of a Ni45.3Ti34.7Hf15Pd5 (at.%) alloy was systematically analyzed after homogenization treatment at 1050 degrees C for 4 h. Shape-memory behavior under a wide range of compressive stress levels from 100 to 1000 MPa was investigated through constant-stress thermal cycling experiments. The alloys showed a reversible strain of 2.5% against a huge stress of 1 GPa. Superelastic behavior was observed in a large temperature window of 50 degrees C-170 degrees C. Training of the alloys resulted in hardening effect and better shape recovery in constant-temperature loading experiments at -50 degrees C.