Atomistic study on shock behaviour of NiTi shape memory alloy
نویسندگان
چکیده
منابع مشابه
On the Damping Behaviour of Niti Shape Memory Alloy
Shape memory alloys exhibit a high damping capacity in the mktensite state. Results obtained from both DMA and cyclic tests under tension-compression load show that the martensite damping capacity in NiTi SMAs is a function of both strain amplitude and annealing temperature. Internal friction due to movements of martensite twin boundaries within both elastic (accommodation) and inelastic (reori...
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Atomistic simulations are performed to study the structure and geometrical limit of nanoscale twins in NiTi shape memory alloys. We analyze compound twins as narrow as 1 nm, involving a few atomic layers. A novel nanotwinned structure is found, forming through the martensitic transformation of sublattices. We predict the temperatures of phase transformation, which are consistent with experiment...
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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 کاملWear behaviour of martensitic NiTi shape memory alloy under ball-on-disk sliding tests
Ball-on-disk sliding wear tests were conducted on martensitic NiTi shape memory alloy against an alumina counter ball. The wear features and coefficients of friction of the samples subjected to different loads and sliding cycles were investigated to reveal the degradation process of the NiTi surface. Three stages of degradation were identified, namely, a near-zero wear stage, a transition wear ...
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Molecular dynamics simulations are performed to study the atomistic mechanisms governing the pseudoelasticity and shape memory in nickel–titanium (NiTi) nanostructures. For a h110i – oriented nanopillar subjected to compressive loading–unloading, we observe either a pseudoelastic or shape memory response, depending on the applied strain and temperature that control the reversibility of phase tr...
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ژورنال
عنوان ژورنال: Philosophical Magazine
سال: 2017
ISSN: 1478-6435,1478-6443
DOI: 10.1080/14786435.2017.1294769