کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1613770 | 1005601 | 2013 | 4 صفحه PDF | دانلود رایگان |

This paper presents a three-dimensional calculation model for martensitic transformation and the numerical results were compared with experimental load-biased thermal cycling data of Ti–35Ni–15Cu (at%) shape memory alloy. Our new model accounts for the self-accommodation part of the variants separately in addition to the conventional individual variants. Thermodynamic driving force for a transformation between bistable states was provided in terms of a potential energy of each variant. Transformation kinetic parameters were applied differentially to the self-accommodation and the individual variants. By this approach, interplay between thermodynamics and kinetics of the self-accommodation and the individual variants could be successfully captured. The model has predicted the experimental result more accurately than the model without the self-accommodation part.
► We conduct finite element analysis of shape memory alloy.
► Bistable Arrhenius type equation is used.
► 6 correspondence variants and one self-accommodation variant are considered.
► Load-biased thermal cycling test of Ti–Ni–Cu alloy is considered.
► Experimental result in the literature is more accurately predicted by our model.
Journal: Journal of Alloys and Compounds - Volume 577, Supplement 1, 15 November 2013, Pages S115–S118