کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1603284 | 1515980 | 2013 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Microstructure, mechanical properties and fracture behavior of WC-40Â vol.% Ni3Al composites with various carbon contents
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
In this paper, the effect of the carbon contents on the microstructure, mechanical properties and fracture behavior of WC-40Â vol.% Ni3Al composites prepared by conventional powder metallurgy was studied. Microstructure examinations of WC-40Â vol.% Ni3Al specimens indicated that the WC grain is round and fine compared with faceted and large WC grain of WC-Co composites. With increasing carbon contents, the WC morphology of WC-40Â vol.% Ni3Al composites is similar and the size of WC grain is approximate and the distribution of binder phase becomes relatively uniform. Furthermore, composition analysis of binder phase showed that, with the increase of carbon content, the solubility of W in Ni3Al reduced slightly. The ~Â 9Â wt.% solubility of W in Ni3Al is much lower compared with ~Â 22.4Â wt.% of WC-40Â vol.% Co composites. The hardness and transverse rupture strength of WC-40Â vol.% Ni3Al composites decrease with increasing carbon contents slightly. WC-40Â vol.% Ni3Al composites present higher hardness and lower transverse rupture strength than that of WC-40Â vol.% Co composites. With increasing carbon contents, the fracture behavior of the WC-40Â vol.% Ni3Al composites is affected greatly and the fracture mode changes from transgranular fracture towards intergranular fracture.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Refractory Metals and Hard Materials - Volume 40, September 2013, Pages 2-7
Journal: International Journal of Refractory Metals and Hard Materials - Volume 40, September 2013, Pages 2-7
نویسندگان
Jianzhan Long, Zhongjian Zhang, Tao Xu, Bizhi Lu,