Mechanical and shape-memory behavior of homogenized NiTiHfPd alloys


ACAR E.

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) identifier identifier

  • 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, INDUCED MARTENSITIC-TRANSFORMATION, PHASE-TRANSFORMATION, SINGLE-CRYSTALS, HYSTERESIS, MICROSTRUCTURE, PRECIPITATION, DEPENDENCE
  • 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.