کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1617220 | 1005681 | 2011 | 4 صفحه PDF | دانلود رایگان |
As a new single-crystal preparation method, undercooling directional solidification has been proposed for the case of the ferromagnetic shape memory Co50Ni20Ga30 rod. The as-grown single crystal has strong [1 1 1] orientation and a very homogenous composition along the rod axis, which confirms that the undercooling directional solidification is a feasible and effective approach for preparing Co–Ni–Ga single crystals. Additionally, the drastically increased transformation temperatures upon undercooling was ascribed to the internal stress induced martensitic transformation.
► Undercooling directional solidification is proposed as a new preparation method of single crystals.
► The microstructure and composition of the Co50Ni20Ga30 rod exhibit a perfect single crystal.
► The rod exhibits strong [1 1 1] preferred orientation.
► The martensitic transformation is induced by large internal stresses.
Journal: Journal of Alloys and Compounds - Volume 509, Issue 24, 16 June 2011, Pages 6777–6780