期刊
INTERNATIONAL JOURNAL FOR MULTISCALE COMPUTATIONAL ENGINEERING
卷 7, 期 5, 页码 445-456出版社
BEGELL HOUSE INC
DOI: 10.1615/IntJMultCompEng.v7.i5.60
关键词
martensitic transition; shape memory alloys; X-interface; Cu-Al-Ni
资金
- ASCR [A200100627]
- Czech Science Foundation [101/06/0768, 202/09/1164]
- IT ASCR [CEZ:AVOZ20760514]
- Ministry of Education of the Czech Republic [1M06031]
We present a construction of a mathematical model of an interfacial microstructure (i.e., microstructure forming at the phase interface between austenite and martensite) in a single crystal of Cu-Al-Ni shape memory alloy. In the first part of the article, the experiment is briefly outlined and the compatibility of the experimentally observed microstructures is analyzed, showing that the observed X-interfaces cannot be compatible without the presence of elastic strains. Then, the elastic strains in the microstructure are evaluated by finite element method, whereby the elastic coefficients of finely microstructured regions are obtained by homogenization. The significant influence of the choice of the geometry on the numerical results is shown and discussed.
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