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Processing, microstructure and mechanical properties of TiC-465 stainless steel/465 stainless steel layer composites
Institute of Powder Metallurgy, School of Materials Science and Engineering, University of Science and Technology, Beijing.ORCID iD: 0000-0003-4888-6237
Institute of Powder Metallurgy, School of Materials Science and Engineering, University of Science and Technology, Beijing.
Department of Metallurgical and Materials Engineering, University of Engineering and Technology, Lahore.
Institute of Powder Metallurgy, School of Materials Science and Engineering, University of Science and Technology, Beijing.
2007 (English)In: Journal of Alloys and Compounds, ISSN 0925-8388, E-ISSN 1873-4669, Vol. 439, no 1-2, p. 287-293Article in journal (Refereed) Published
Abstract [en]

Layered composites of carbide reinforcements and stainless steel have been prepared successfully by powder technology. The layer material consisted of two layers. Top layer consisted of reinforcements (TiC and NbC) and 465 stainless steel as binder material for carbides. The substrate material was of binder material (465 stainless steel). The microstructure of the composite was characterized by scanning electron microscopy. The microstructural study revealed that top layer (TiC-NbC/465 stainless steel) showed the typical core-rim microstructure of conventional steel bonded cermets and the substrate material showed the structure of sintered steel. An intermediate layer was formed due to diffusion reaction of top layer and substrate material. This intermediate layer showed a gradient microstructure. The bending strength of layered material measured in the direction perpendicular to the layer alignment was remarkably higher. Nineteen percent increase in bending strength in case of 53 wt% reinforcement in top layer and 35% increase in case of 73 wt% reinforcement in top layer was found. The variation of strength as a function of thickness of substrate material revealed that the character of material changed from cermet to a layer composite and then towards metallic materials. The fracture morphologies of top layer, substrate material and intermediate layer are also reported

Place, publisher, year, edition, pages
2007. Vol. 439, no 1-2, p. 287-293
National Category
Other Materials Engineering
Research subject
Engineering Materials
Identifiers
URN: urn:nbn:se:ltu:diva-6443DOI: 10.1016/j.jallcom.2006.08.073Local ID: 4aaae778-d4d7-4a3e-8899-a70104743533OAI: oai:DiVA.org:ltu-6443DiVA, id: diva2:979328
Note
Upprättat; 2007; 20150513 (andbra)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2017-11-24Bibliographically approved

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