Mechanical and shape-memory behavior of homogenized NiTiHfPd alloys-Reference-Cited by-同舟云学术

Mechanical and shape-memory behavior of homogenized NiTiHfPd alloys

Published:2022-10-05 Issue:5 Volume:237 Page:974-980
ISSN:1464-4207
Container-title:Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications
language:en
Short-container-title:Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications

Author:

Acar Emre¹²^ORCID

Affiliation:

1. Department of Aeronautical Engineering, Erciyes University, Kayseri, Turkey

2. Maicros Advanced Engineering Technologies, Erciyes Teknopark, Kayseri, Turkey

Abstract

Mechanical behavior of a Ni45.3Ti34.7Hf15Pd5 (at.%) alloy was systematically analyzed after homogenization treatment at 1050°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°C–170°C. Training of the alloys resulted in hardening effect and better shape recovery in constant-temperature loading experiments at –50°C.

Publisher

SAGE Publications

Subject

Mechanical Engineering,General Materials Science

Link

http://journals.sagepub.com/doi/pdf/10.1177/14644207221130579

Reference36 articles.

1. High temperature shape memory alloys

2. Diffusionless phase transformation characteristics of Mn75.7Pt24.3

3. Laser welding of precipitation strengthened Ni-rich NiTiHf high temperature shape memory alloys: Microstructure and mechanical properties

4. In-situ synchrotron X-ray diffraction analysis of the elastic behaviour of martensite and H-phase in a NiTiHf high temperature shape memory alloy fabricated by laser powder bed fusion