کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7880680 | 1509590 | 2015 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effect of directional solidification on texture and magnetic-field-induced strain in Ni-Mn-Ga foams with coarse grains
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Effect of directional solidification on texture and magnetic-field-induced strain in Ni-Mn-Ga foams with coarse grains Effect of directional solidification on texture and magnetic-field-induced strain in Ni-Mn-Ga foams with coarse grains](/preview/png/7880680.png)
چکیده انگلیسی
Ferromagnetic Ni-Mn-Ga shape memory alloys with large magnetic-field-induced strains are promising candidates for actuators. Here, we cast replicated Ni-Mn-Ga foams with 57 vol.% of 355-500 μm open pores, with and without directional solidification. The 10M martensitic phase was determined in all foam samples. Directionally solidified foam had a fiber texture, with <1 0 0> closely aligned with the solidification direction. In contrast, foams without directional solidification were more randomly textured. One directionally solidified foam showed a maximum magnetic-field-induced strain of 0.65%, which was twice the value displayed by other foams without directional solidification. This improvement is consistent with a reduction in incompatibility stresses between neighboring grains deforming by twinning, generated by a reduction in crystallographic misorientation in textured foam.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Acta Materialia - Volume 86, March 2015, Pages 95-101
Journal: Acta Materialia - Volume 86, March 2015, Pages 95-101
نویسندگان
Peiqi Zheng, Nikole J. Kucza, Zilong Wang, Peter Müllner, David C. Dunand,