کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1577704 1514805 2012 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Microstructural development and mechanical properties of iron based cermets processed by pressureless and spark plasma sintering
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
Microstructural development and mechanical properties of iron based cermets processed by pressureless and spark plasma sintering
چکیده انگلیسی

Iron-based cermets are an interesting class of metal-ceramic composites in which properties and the factors influencing them are to be explored. In this work the metal matrix contains Cr, W, Mo and V as alloying elements, and the hard phase is constituted by 50 vol% of titanium carbonitride (TiCN) particles. The work studies the influence of the C content and the processing method on the sinterability, microstructure and hardness of the developed cermet materials. For that purpose, cermet samples with different C content in the matrix (0 wt%, 0.25 wt%, 0.5 wt%, 1.0 wt%) were prepared by conventional pressureless sintering (CPS) and, in order to achieve finer microstructures and to reduce the sintering time, by spark plasma sintering (SPS). The density and hardness (HV30) of the processed materials was evaluated, while their phase composition and microstructure was characterised by X-ray diffraction (XRD) and scanning electron microscopy (SEM), respectively. The equilibrium phase diagram of the composite material was calculated by ThermoCalc software in order to elucidate the influence of the carbon content on the obtained phases and developed microstructures.


► Processing of Fe-based cermets by pressureless sintering and spark plasma sintering.
► Influence of carbon content on the sintering mechanism and hardness.
► The cermet phase diagram was calculated and permits to explain the microstructure.
► SPS provides ferritic matrix and different carbide distribution than CPS samples.
► Pressureless sintered samples contain retained austenite at room temperature.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 538, 15 March 2012, Pages 28–34
نویسندگان
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