Effect of aging on the phase transformation and mechanical behavior of Ti{sub 36}Ni{sub 49}Hf{sub 15} high temperature shape memory alloy

Journal Article · Mon Jan 31 00:00:00 EST 2000 · Scripta Materialia

DOI:https://doi.org/10.1016/S1359-6462(99)00347-4· OSTI ID:20015210

Meng, X L; Zheng, Y F; Wang, Z; Zhao, L C

The TiNiHf alloys are newly developed as high temperature shape memory alloys with the high transformation temperatures and with lower cost in comparison with TiNiX (X = Pd, Pt) alloys. Until now, no results about the effects of aging at high temperature (above 953K) in the TiNiHf alloys are reported. The purpose of the present work is to investigate the microstructure, transformation temperature, mechanical properties and shape memory effects (SMEs) for Ti{sub 36}Ni{sub 49}Hf{sub 15} alloy aged at 973K for different hours by transmission electron microscopy (TEM), X-ray diffraction (XRD) techniques, electrical resistance-temperature measurement, bending and tensile tests.

• Research Organization: Harbin Inst. of Tech. (CN)
• OSTI ID: 20015210
• Journal Information: Scripta Materialia, Vol. 42, Issue 4; Other Information: PBD: 31 Jan 2000; ISSN 1359-6462
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CRYSTAL-PHASE TRANSFORMATIONS
MECHANICAL PROPERTIES
TITANIUM ALLOYS
NICKEL ALLOYS
HAFNIUM ALLOYS
AGING
SHAPE MEMORY EFFECT
X-RAY DIFFRACTION
MICROSCOPY