Conceptual Analysis on Severe Plastic Deformation Processes of Shape Memory Alloys: Mechanical Properties and Microstructure Characterization
نویسندگان
چکیده
Shape memory alloys (SMAs) are types of materials that can restore their original shape upon severe or quasi-plastic deformation, being exposed to specific external stimuli, including heating, electric current, magnetic field, etc. They a category functional provides superelasticity as significant material property. The roots this unintentional discovery were in the 20th century, and later it attracted attention various industries, aerospace, medical, mechanical, manufacturing Later developments mainly focused on improving properties these materials. One ways which is achieved application intensive plastic strains SMAs through deformation (SPD) methods, leading extreme grain refinement. Superelasticity key characteristic known capacity polycrystalline display extremely high elongations before failure, typically isotropic way, with an approximate strain rate 0.5. Utilization SPD techniques also affect lead superior responses SMAs. Several methodologies have been introduced over decades, produce ultrafine-grained even nanostructured materials, constrained groove pressing, equal-channel angular high-speed high-pressure torsion, accumulative roll bonding, This paper aims present clear view mechanical microstructure evolution after processing by some show methods be great option for developing expanding industrial technological applications.
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ژورنال
عنوان ژورنال: Metals
سال: 2023
ISSN: ['2075-4701']
DOI: https://doi.org/10.3390/met13030447