منابع مشابه
Fatigue crack-growth in shape-memory NiTi and NiTi–TiC composites
An experimental study was conducted to examine the room-temperature fatigue crack-growth characteristics of shape-memory NiTi matrix composites reinforced with 10 and 20 vol.% of TiC particles. Microstructural characterization of these hot-isostatically-pressed materials shows that the TiC particles do not react with the NiTi matrix and that they lack any texture. Overall fatigue crack-growth c...
متن کاملShape-memory NiTi–Nb foams
A new powder metallurgy technique for creating porous NiTi is demonstrated, combining liquid phase sintering of prealloyed NiTi powders by Nb additions and pore creation by NaCl space-holders. The resulting foams exhibit well-densified NiTi–Nb walls surrounding interconnected pores created by the space-holder, with controlled fraction, size, and shape. Only small amounts of Nb (3 at.%) are need...
متن کاملA new type of intrinsic two-way shape-memory effect in hacks of NiTi-wires
Shape-memory hacks were fabricated in a single processing step ("one-time procedure") by a combination of tensile and bending deformation of a martensitic NiTi-wire. The hacks reversibly changed curvature on heating and cooling in a reproducible manner over 50 thermal cycles. This new type of intrinsic two-way shape memory effect was studied by subjecting the hacks to a beam of high-energy sync...
متن کاملNanofretting behaviors of NiTi shape memory alloy
Nanofretting behaviors of NiTi shape memory alloy Linmao Qian a, Zhongrong Zhou a,∗, Qingping Sun b, Wenyi Yan c a Tribology Research Institute, National Traction Power Laboratory, Southwest Jiaotong University, Chengdu 610031, China b Department of Mechanical Engineering, The Hong Kong University of Science and Technology, Hong Kong, China c School of Engineering and Information Technology, De...
متن کاملEffect of microstructure on the fatigue of hot-rolled and cold-drawn NiTi shape memory alloys
We present results from a systematic study linking material microstructure to monotonic and fatigue properties of NiTi shape memory alloys. We consider Ni-rich materials that are either (1) hot rolled or (2) hot rolled and cold drawn. In addition to the two material processing routes, heat treatments are used to systematically alter material microstructure giving rise to a broad range of therma...
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ژورنال
عنوان ژورنال: Procedia Structural Integrity
سال: 2016
ISSN: 2452-3216
DOI: 10.1016/j.prostr.2016.06.181