کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7992429 1516146 2018 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Fabrication, interfacial characteristics and strengthening mechanisms of ZrB2 microparticles reinforced Cu composites prepared by hot-pressed sintering
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
Fabrication, interfacial characteristics and strengthening mechanisms of ZrB2 microparticles reinforced Cu composites prepared by hot-pressed sintering
چکیده انگلیسی
1-9 wt% of ZrB2 particles are added to Cu to produce ZrB2/Cu composites by a hot-pressed sintering process. Microstructures, mechanical and electrical properties of the prepared ZrB2/Cu composites are systematically investigated. The results indicated that the relative density and electrical conductivity of the composites decrease with increasing ZrB2 content. However, the microhardness reaches a maximum value of 100.8 HV0.2 as ZrB2 content increases to 7 wt % and then decreases when ZrB2 content further increases. TEM study reveals that the hexagonal ZrB2 crystals in size of several micrometers are well embedded in Cu matrix. The interfacial zone consists of both sharp interfaces and amorphous transition layer. Grain refinement strengthening, Orowan strengthening and coefficients of thermal expansion mismatch strengthening contribute to the increment of microhardness and reduce the electrical conductivity.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 748, 5 June 2018, Pages 546-552
نویسندگان
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