کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8044382 | 1518918 | 2018 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Microstructure and microhardness of as-cast and 800â¯Â°C annealed AlxCr0.2Fe0.2Ni0.6-x and Al0.2Cr0.2FeyNi0.6-y alloys
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سطوح، پوششها و فیلمها
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The microstructure and phase analysis of the arc-melted AlxCr0.2Fe0.2Ni0.6-x (xâ¯=â¯0.07-0.53) and Al0.2Cr0.2FeyNi0.6-y (y = 0.06-0.53) alloys, in both the as-cast state and after annealing at 800 °C for 30 days, were experimentally investigated by scanning electron microscopy and X-ray diffraction. With the exception of alloys with a high Al content, the Al-Cr-Fe-Ni alloys are composed of BCC-type and/or FCC-type phases. In the as-cast state, with Cr content fixed at 20%, the amount of the B2 phase increases with the Al content. The BCC and/or FCC solid solution separates from the B2 phase when annealed at 800 °C. Once annealed, these alloys are all composed of two or more phases. The uniform nanoparticle B2+BCC structure was observed in the 800 °C annealed Al0.2Cr0.2FeyNi0.6-y (yâ¯=â¯0.36-0.53) alloys. The phase size decreased with the increase of the Fe content. Moreover, the microhardness of the alloys linearly increased with the Al content in the AlxCr0.2Fe0.2Ni0.6-x alloys, while the effect of Fe and Ni content on the microhardness is limited. After annealing at 800â¯Â°C, the hardness of the AlxCr0.2Fe0.2Ni0.6-x (xâ¯=â¯0.24-0.44) alloys decreased by around 100â¯HV, while that of Al0.2Cr0.2FeyNi0.6-y (yâ¯=â¯0.16-0.54) alloys decreased by 120-180â¯HV. This information will help to design Al-Cr-Fe-Ni based multi-component alloys.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Vacuum - Volume 152, June 2018, Pages 214-221
Journal: Vacuum - Volume 152, June 2018, Pages 214-221
نویسندگان
Jiaofeng Zeng, Changjun Wu, Haoping Peng, Ya Liu, Jianhua Wang, Xuping Su,