Results 111 to 120 of about 4,530 (246)

R-Phase Transformation Evolution in NiTi SMA Wires Studied via the Internal Friction Technique

open access: yesCrystals
The specific damping capacity variation of heat-treated NiTi was observed during a pseudoelasticity test. The detailed B2 → R-phase transformation process in cold-drawn NiTi wires undergoing middle-temperature aging was studied via X-ray diffraction ...
Yuhao Xu   +5 more
doaj   +1 more source

Ab initio study of point defects in NiTi-based alloys

open access: yes, 2014
Changes in temperature or stress state may induce reversible B2$\leftrightarrow$(R)$\leftrightarrow$ B19' martensitic transformations and associated shape memory effects in close-to-stoichiometric nickel-titanium (NiTi) alloys.
Dlouhý, Antonín   +3 more
core   +1 more source

Enhancement of shape recovery and pseudoelasticity in an Fe-18Mn-5Si-7Cr-5Ni shape memory alloy processed by cold rolling

open access: yesResults in Engineering
The effect of cold rolling by 20 % and 40 % reductions in thickness on the shape recovery and pseudoelastic behavior of an Fe-18Mn-5Si-7Cr-5Ni (wt. %) shape memory alloy was investigated.
Hamidreza Koohdar   +1 more
doaj   +1 more source

Effect of Contact Temperature Rise During Sliding on the Wear Resistance of TiNi Shape Memory Alloys [PDF]

open access: yesTribology in Industry, 2013
The high wear resistance of TiNi shape memory alloys has generally been attributed to its pseudoelastic nature. In the present work the hardening effect due to its phase transformation from martensite to austenite due to frictional heating during sliding
S.K. Roy Chowdhury   +2 more
doaj  

Comparison of Different Temperatures on Bending Properties of Six Niti Endodontic File Systems [PDF]

open access: yes, 2018
Introduction: Manufacturers claim that modern NiTi files with proprietary heat treatment transform at higher temperatures, thus staying more martensite and being more resistant to cyclic fatigue and more flexible.
Yoo, Sukbum
core   +1 more source

Rapid prototyped porous nickel–titanium scaffolds as bone substitutes

open access: yesJournal of Tissue Engineering, 2014
While calcium phosphate–based ceramics are currently the most widely used materials in bone repair, they generally lack tensile strength for initial load bearing.
Waldemar Hoffmann   +7 more
doaj   +1 more source

Equilibrium thermodynamics of pseudoelasticity and quasiplasticity

open access: yesContinuum Mechanics and Thermodynamics, 1996
Motivated by recent experimental results by Glasauer [7], a thermodynamic theory of shape memory alloys is proposed, which includes not only the high temperature - pseudoelastic - behavior but also the low temperature range of quasiplasticity. Due to the occurance of three different phases - austenite and two martensitic variants - several cases of two-
openaire   +4 more sources

Home - About - Disclaimer - Privacy