Dynamics of martensitic structure at TiNb-based quenched alloys under heating and loading

International Conference on Dynamics of Systems on the Nanoscale 2012

Petrzhik, Mikhail^1

National University of Science and Technology MISIS, 4 Leninskiy prospekt, Moscow 119049, Russia^1

关键词: Elastic modulus determination;    External stress;    Indentation testing;    Martensitic structures;    Orthorhombic unit cell;    Phase competition;    Quenched alloys;    Thermal and mechanical cycling;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/438/1/012020/pdf
DOI  :  10.1088/1742-6596/438/1/012020

来源: IOP

【 摘 要 】

Phase competition at TiNb-based Ni-free shape memory alloys caused by changes of alloying, temperature, external stresses is considered by analysis of experimental results on elastic modulus determination, X-ray diffraction, thermal analysis, mechanical tensile and indentation testing. Martensitic β↔α″ transformation undergoes due to a reversible displacements of atoms at (002) plane of orthorhombic unit cell. The martensitic structure has high stability against thermal and mechanical cycling.