Texture, strain, and phase-fraction measurements during mechanical cycling in superelastic NiTi
作者： R. Vaidyanathan , M. A. M. Bourke , D. C. Dunand
DOI: 10.1007/S11661-001-1012-Y
关键词:
摘要: Superelastic NiTi was subjected to simultaneous neutron diffraction and uniaxial compressive cycling between 10 980 MPa. The objective an in-situ investigation of the evolution stress-induced, reversible transformation austenite martensite, determine cause changes in macroscopic stress-strain response with cycling. Rietveld refinement used analyze spectra quantify phase fraction, texture, elastic strain. average strain mechanically loaded (at a given stress) remained unaltered during 100 load-unload cycles. However, differences both volume fraction texture martensite were noted as progressed, suggesting that these factors are responsible for mechanical
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