کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1603990 1516003 2009 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Pulsed electric current sintered Fe3Al bonded WC composites
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
Pulsed electric current sintered Fe3Al bonded WC composites
چکیده انگلیسی

WC based composites with 5, 10 and 20 vol.% Fe3Al binder were consolidated via pulsed electric current sintering (PECS) in the solid state for 4 min at 1200 °C under a pressure of 90 MPa. Microstructural analysis revealed a homogeneous Fe3Al binder distribution, ultrafine WC grains and dispersed Al2O3 particle clusters. The WC-5 vol.% Fe3Al composite combines an excellent Vickers hardness of 25.6 GPa with very high Young’s modulus of 693 GPa, a fracture toughness of 7.6 MPa m1/2 and flexural strength of 1000 MPa. With increasing Fe3Al binder content, the hardness and stiffness decreased linearly to 19.9 and 539 GPa, respectively with increasing binder content up to 20 vol.%, while the fracture toughness and flexural strength were hardly influenced by the binder content. Compared to WC–Co cemented carbides processed under exactly the same conditions, the WC–Fe3Al composites exhibit a substantially higher hardness and Young’s modulus.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Refractory Metals and Hard Materials - Volume 27, Issue 6, November 2009, Pages 1019–1023
نویسندگان
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