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...

Stimulated by recent experimental results on superelastic NiTi shape memory alloy, a theoretical study is carried out to quantify the effect of plasticity on stress-induced martensite transformation, using a constitutive model that combines phase transformation and plasticity. A constraint equation is introduced to quantify the phenomenon of the stabilisation of plasticity on stress-induced mar...

This work focuses on the stress-induced transformation in solutionized and overaged single-crystal NiTi alloys. The potential role of detwinning on the recoverable strains was investigated both theoretically and also with temperature-cycling experiments. The detwinning is the growth of one variant within a martensite in expense of the other. It is shown that the experimental recoverable strains...

Diffusionless phase transitions are at the core of the multifunctionality of (magnetic) shape memory alloys, ferroelectrics and multiferroics. Giant strain effects under external fields are obtained in low symmetric modulated martensitic phases. We outline the origin of modulated phases, their connection with tetragonal martensite and consequences for their functional properties by analysing th...

The features of martensite transformation in Fe (31 32)% Ni melt-quenched alloys are considered. The meltquenching was realized by spinning technique with variable parameters. The influence of the melt-quenching on structural and kinetics transformation parameters is revealed. In particular Ms point is shown to decrease but volume percentage of athermal martensite is found to be invariable with...

医疗护理需要更新的地图。从 护理角度分析从医生及患者中 收集到的数据（ “ 大数据” ） 并以案例报告的形式在医学文 献上发表， 这是一种有助于更 新我们的医疗护理地图的工 具。地图是一种通用沟通工 具， 不同文化和语言的人都能 理解。每当我旅行到一个新的 城市时， 我首先要做的事情之 一就是查看地图。地图通常注 重呈现数据的一种特定概念或 策略， 这些数据是从大量可能 性中甄选而出， 且地图会因时 而变。从历史地图中不仅可以 洞悉过去已知的情况， 还能提 供关于地图本身的文化线索。 新的策略及新的思维方式通常 需要新的地图。地图是某一地区或领域的符号表 征，这些表征体现出地图中各种 元素之间的相互关系。导航地图 （包括路线图、地形图及天文图 等）是当今常用的一类地图。人 们如何利用地图来定向和定位是 一种高度的文化现象，且随时间 变化。例如，中世纪欧洲的 T-O (orbis te...

The composition of essential oil isolated from Achillea eriophora, Achillea millefolium, Achillea biebersteinii and Achillea tenuifolia growing wild in the south west of Iran, was analyzed.  A. eriophora, A. millefolium and A. tenuifolia essential oils were characterized by sabinene, 1, 8-cineole, terpinene-4-ol, ά –bisabolol, p-Cymene, β-pinene and α-pinene. The A. biebersteinii essential oil ...

The possibility of producing bainite at low temperatures by suppressing transformation using substitutional solutes has been investigated, as an alternative to using large carbon concentrations to achieve the same purpose. It is found that although transformation temperatures can indeed be suppressed in this way, the difference between the bainite and martensite start temperatures diminishes. T...