With the presence of internal interfaces such as austenite–martensite interface and twin boundaries in martensite, shape memory alloys (SMAs) can be employed passive/active damping applications. Due to latent heat transformation, a temperature rise/drop during load/unload cycle is expected dynamically couple with mechanical response SMA influence stress levels forward/reverse transformation thu...

This study systematically investigated the effects of heat and thermomechanical treatments on pseudo-elastic behavior an Fe-based shape-memory alloy (Fe–17Mn–5Si–10Cr–4Ni-1(V, C) %wt.). First, samples were solution-annealed at 1000 °C for 2 h aged 760 6 h. A treatment was then applied to heat-treated samples. The microstructure mechanical properties (i.e., 0.1% yield stress pseudo-elasticity) c...

The work presents a thermomechanical model for polycrystalline NiTi-based shape memory alloys developed within the framework of generalized standard solids, which is able to cover loading-mode dependent localization martensitic transformation. key point introduction novel austenite–martensite interaction term responsible strain-softening material. Mathematical properties are analyzed, and suita...

The redistribution of carbon after tempering of a novel nanocrystalline bainitic steel consisting of a mixture of supersaturated ferrite and retained austenite has been analyzed by atom probe tomography. No direct evidence supporting the additional carbon enrichment of austenite beyond that initially achieved during the bainite heat treatment was obtained during subsequent tempering of this hig...

Deformation behavior and microstructure evolution of NiTiCu shape memory alloy (SMA), which possesses martensite phase at room temperature, were investigated based on a uniaxial compression test at the temperatures of 700~1000 ◦C and at the strain rates of 0.0005~0.5 s−1. The constitutive equation of NiTiCu SMA was established in order to describe the flow characteristic of NiTiCu SMA, which is...

The austenite-to-martensite transformation in a partially hardened stainless steel containing 17wt %Cr, 7wt %Ni and 1wt % Al was investigated with Vibrating Sample Magnetometry and Electron Back-Scatter Diffraction. Magnetometry demonstrated that measurable martensite formation can be suppressed on fast cooling to 77K as well as on subsequent fast heating to 373 K. Surprisingly, martensite form...

The austenite-to-martensite transformation in a partially hardened stainless steel containing 17wt %Cr, 7wt %Ni and 1wt % Al was investigated with Vibrating Sample Magnetometry and Electron Back-Scatter Diffraction. Magnetometry demonstrated that measurable martensite formation can be suppressed on fast cooling to 77K as well as on subsequent fast heating to 373 K. Surprisingly, martensite form...

Displacive stress and strain induced transformations are those that occur when the formation of martensite or bainitic ferrite is promoted by application strain. These have been shown to be one mechanisms which mechanical properties a microstructure can improved, as they lead better ductility strength transformation plasticity effect. This review aims summarize fundamental knowledge about them,...

A promising route for manufacturing emergent metamaterials is the use of ultrafast laser pulses in complex alloy processing. Laser-induced structural transformations Zr-based alloys crystalline and glassy states are investigated here. The thermomechanical response compared between relevant stable structures ${\mathrm{B}}_{2}\text{\ensuremath{-}}{\mathrm{Cu}}_{50}{\mathrm{Zr}}_{50}$, $\mathrm{C}...