کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1616606 | 1005665 | 2012 | 4 صفحه PDF | دانلود رایگان |
The intrinsic mechanism of the martensitic transformation (MT) suppression observed in Ni–Co–Mn–In alloys fabricated under non-equilibrium conditions still remains mysterious. Here, we used the undercooling technique to obtain a solidified microstructure in non-equilibrium state, subsequently leading to MT suppression even further cooling to 10 K. It was found that primary dendrite-like In-depleted precipitates occurred during solidification under a large undercooling. After a prolonged annealing, the MT interestingly appeared again due to the dissolution of the precipitates and the recovery of equilibrium chemical composition in the matrix.
► We used the undercooling technique to obtain a solidified microstructure in non-equilibrium state.
► Primary dendrite-like In-depleted precipitates occurred during solidification under a large undercooling, subsequently leading to MT suppression.
► After a prolonged annealing, the MT appeared again due to the dissolution of the precipitates and the recovery of equilibrium chemical composition.
► We establish the relationships among non-equilibrium solidification with different undercoolings, martensitic transformation and magnetic behaviors.
Journal: Journal of Alloys and Compounds - Volume 511, Issue 1, 15 January 2012, Pages 41–44