کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
832100 908115 2010 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effect of V content on the microstructure and mechanical properties of Mo2FeB2 based cermets
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی (عمومی)
پیش نمایش صفحه اول مقاله
Effect of V content on the microstructure and mechanical properties of Mo2FeB2 based cermets
چکیده انگلیسی

Four series of cermets with V content between 0 and 7.5 wt.% in 2.5 wt.% increments were studied by scanning electron microscopy (SEM), energy dispersive X-ray analysis (EDX) and X-ray diffractometry (XRD). The transverse rupture strength (TRS), hardness (HRA) and fracture toughness (KIC) were also measured. It was found that the grain size was affected by the V content. The cermets with 2.5 wt.% V addition exhibited the smallest grain size. An increasing V content decreased the wettability of the binder on the Mo2FeB2 hard phase, and accordingly resulted in the increase of porosity and aggregation of ceramic grains. EDS results showed that V addition occurred primarily in the hard phase, with a little amount in the Fe alloy binder. In addition, the content of Mo element in the binder decreased with increasing V content. The cermets with 2.5 wt.% V addition showed the highest TRS, hardness and fracture toughness of 2350 MPa, HRA 90.6 and 15.1 MPa m1/2, respectively.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials & Design (1980-2015) - Volume 31, Issue 5, May 2010, Pages 2680–2683
نویسندگان
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