کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1602104 | 1005230 | 2007 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Laser beam weld-metal microstructure in a yttrium modified directionally solidified Ni3Al-base alloy
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Laser beam weld-metal microstructure in a yttrium modified directionally solidified Ni3Al-base alloy Laser beam weld-metal microstructure in a yttrium modified directionally solidified Ni3Al-base alloy](/preview/png/1602104.png)
چکیده انگلیسی
The microstructure of laser beam weld-metal of an yttrium doped directionally solidified alloy IC 6A, with chemical composition Ni-16Al-8.5Mo-0.12B-0.05C-0.03Y (at.%) was studied. The dendritic microsegregation observed within the fusion zone indicated that dendrite cores were slightly depleted in molybdenum and aluminum and the interdendritic regions were also considerably enriched in yttrium. Severe cracking in the weld-metal was observed and was found to be closely associated with interdendritic eutectic-type microconstituents identified as consisting of γ, γⲠand Ni-Mo phases. An yttrium-rich phase (Ni3Y) was observed in some interdendritic regions containing the eutectic γ, γⲠand Ni-Mo products. Their formation was discussed in relation to plausible microsegregation induced alteration of primary solidification path during cooling from welding temperatures.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Intermetallics - Volume 15, Issue 12, December 2007, Pages 1504-1510
Journal: Intermetallics - Volume 15, Issue 12, December 2007, Pages 1504-1510
نویسندگان
R.G. Ding, O.A. Ojo, M.C. Chaturvedi,