Mechanical and shape-memory behavior of homogenized NiTiHfPd alloys

被引：0
|
作者：
Acar, Emre [1 ,2 ]
机构：
[1] Erciyes Univ, Dept Aeronaut Engn, TR-38039 Kayseri, Turkey
[2] Maicros Adv Engn Technol, Erciyes Teknopk, Kayseri, Turkey
来源：
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART L-JOURNAL OF MATERIALS-DESIGN AND APPLICATIONS | 2023年 / 237卷 / 05期
关键词：
Superelasticity; high strength; shape-memory alloy; NiTiHfPd; martensite; INDUCED MARTENSITIC-TRANSFORMATION; PHASE-TRANSFORMATION; SINGLE-CRYSTALS; HYSTERESIS; MICROSTRUCTURE; PRECIPITATION; DEPENDENCE;
D O I：
10.1177/14644207221130579
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
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.
引用
收藏
页码：974 / 980
页数：7
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