کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6744385 | 1429328 | 2017 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Microstructure and mechanical properties of W-Cr-TiN composite by spark plasma sintering
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی انرژی
مهندسی انرژی و فناوری های برق
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
W-x wt.% Cr-3 wt.% TiN (x = 0, 2, 4) composites were fabricated by mechanical alloying (MA) with spark plasma sintering (SPS). A homogenous composite powder with small crystallite sizes was obtained by MA for 30 h. Cr and TiN homogeneously distributed in W matrix when the MA powder was sintered at 1450 °C, while most Cr and Ti aggregated together at sintering temperature of 1750 °C and most N elements were lost. Thermodynamic analysis showed that the dissolution of Cr into TiN to form (Ti,Cr)N solid solution, which causes the content of N element decreasing and Cr-rich phase gradually disappearing at higher sintering temperature. The effect of Cr content on the microstructure and mechanical properties of W composites was also studied. Relative density, Vickers hardness and elastic modulus are positively correlated with the increase of Cr content. W-4Cr-3TiN has the most excellent performance with 99.3% relative density, 825 HV10Kg, and 243 GPa elastic modulus.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Fusion Engineering and Design - Volume 125, December 2017, Pages 503-509
Journal: Fusion Engineering and Design - Volume 125, December 2017, Pages 503-509
نویسندگان
Wei Liu, Lihong Xue, Youwei Yan,