Ni39+x Mn50Sn11-x (x = 0.5, 1.0, 1.5 and 2) alloys comprise multiple martensite nanostrips of nanocrystallites when cast in small discs, for example, ∼15 mm diameter and 8 mm width. A single martensite phase with a L10 tetragonal crystal structure at room temperature can be formed at a critical Sn content of 9.0 at.% (x = 2), whereas an austenite cubic L21 phase turns up at smaller x ⩽ 1.5. The...

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...

The effect of austenite deformation on carbon partitioning and transformation to athermal isothermal martensite, bainite during quenching (QP) is described for three steel compositions: Fe-0.3C-0.6Si-1.1Al, Fe-0.3C-1.0Si Fe-0.3C-0.5Si-0.5Al. Microstructures were characterized using SEM-EBSD, TEM XRD. Austenite decomposition kinetics was investigated dilatometry. Deformation close the no-recryst...

Deformation-induced martensitic transformation (DIMT) during quasi-static loading has drawn much attention in recent years since it is considered as one of the key strengthening mechanisms advanced high-strength steels (AHSS). However, systematic investigations on at high strain-rates are scarce due to difficulties experimental designs. In this contribution, interrupted Charpy tests were used s...

Straining of sheet metal leads to surface roughness changes. In this study, foils AISI 201 and 304 stainless steel were strained in uniaxial tension impose roughening their surfaces. Thereafter, the corrosion resistance, electrical resistivity, magnetic field density, lubricated friction resulting surfaces evaluated. The effect strain-rate on roughening, thereby against tools, occurrence deform...

The volume increase and shape change during austenite to martensite transformation in dual-phase (DP) steels are largely accommodated the microstructure by deformation of surrounding ferrite matrix. Accurate estimation transformation-induced via experiments modeling is essential for predicting subsequent mechanical behavior DP steels. This study aims illustrate disadvantages simplifying anisotr...

The present study investigated the high-speed deformation behavior of 6Ni–0.2N–0.1C steel. 0.2% proof stress (0.2% PS) steel increased with an increase in strain rate () but tensile strength (TS) indicated almost same value at above 10−1 s−1. Uniform elongation (U.El) largely decreased . TS and U.El 103 s−1 were as those SUS304 When effect on mechanical properties was compared between steels, d...