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What is Asymmetric Stress-Strain in NiTi SMAs about?

The study investigates the asymmetry of stress-strain curves in NiTi shape memory alloys (SMAs) under tension and compression, revealing that tension exhibits a flat stress-plateau while compression leads to rapid strain hardening without such a plateau. The deformation mechanisms differ significantly between the two loading conditions, with martensite reorientation occurring under tension and a high density of dislocations forming under compression. Cyclic tests further demonstrate an asymmetric behavior i

Author

Kashyap Vaghela

Language

EN