کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1604127 | 1516000 | 2010 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Decarburization of TiC in Ni activated sintered W-xTiC (x = 0, 5, 10, 15 wt%) composites and the effects of heat treatment on the microstructural and physical properties
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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: Decarburization of TiC in Ni activated sintered W-xTiC (x = 0, 5, 10, 15 wt%) composites and the effects of heat treatment on the microstructural and physical properties Decarburization of TiC in Ni activated sintered W-xTiC (x = 0, 5, 10, 15 wt%) composites and the effects of heat treatment on the microstructural and physical properties](/preview/png/1604127.png)
چکیده انگلیسی
Blended elemental W-xTiC (x = 0, 5, 10, 15 wt%) powders were mechanically alloyed (MA'd) for 30 h in a SPEX Mixer/Mill at room temperature. About 1 wt% Ni was added to each MA'd batch as sintering aid which were further milled for 1 h. MA'd powders were sintered at 1400 °C for 2 h under Ar, H2 gas flowing conditions and annealed at 1600 °C for 6 h under Ar atmosphere. Microstructural characterizations of as-sintered and annealed samples were conducted using XRD and SEM. XRD patterns of the as-sintered and annealed samples revealed the presence of the matrix W and Ni phases, whereas (Tix,W1âx) solid solution phase came into existence after annealing. In addition to XRD patterns, hot combustion and infrared detection measurements revealed the decarburization of TiC. Relative density values varied between 85.2% and 96.4% after sintering. The density values of sintered samples decreased with increasing TiC content. After annealing, a maximum relative density value of 99.8% was achieved. Vickers microhardness values varied between 5.11 GPa and 10.79 GPa for as-sintered samples and a maximum microhardness value of 8.1 GPa was measured after annealing. Wear resistance of the as-sintered samples increased with increasing TiC content.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Refractory Metals and Hard Materials - Volume 28, Issue 3, May 2010, Pages 451-458
Journal: International Journal of Refractory Metals and Hard Materials - Volume 28, Issue 3, May 2010, Pages 451-458
نویسندگان
A. Genç, S. CoÅkun, M.L. ÃveçoÄlu,