Preparation of Molybdenum High Speed Tool Steels with Addition of Niobium Carbide by Powder Metallurgy Techniques

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dc.contributor.authorARÁUJO FILHO, O. O. DE A.
dc.contributor.authorANTONELLO, R. T.
dc.contributor.authorGONZALEZ, C. H.
dc.contributor.authorURTIGA FILHO, S. L.
dc.contributor.authorAMBROZIO FILHO, F.
dc.date.accessioned2023-06-01T06:29:12Z
dc.date.available2023-06-01T06:29:12Z
dc.date.issued2014-12-01
dc.description.abstract© (2014) Trans Tech Publications, Switzerland.High speed steels processed by Powder Metallurgy (PM) techniques present better mechanical properties when compared with similar steels obtained by the conventional process of cast to ingot and hot working. PM techniques produce improved microstructures with smaller and better distribution of carbides. Liquid phase sintering high speed steel seems to be a cheaper processing route in the manufacturing of tool steels if compared to the well-known and expansive hot isostatic pressing high speed steels. The introduction of niobium as alloying element began with the object of replacing elements like vanadium (V) and tungsten (W). Phase liquid sintering consists in a manufacturing technique to process high speed steels by powder metallurgy. The aim of this work of research is to process and obtain AISI M2 and M3:2 with and without the addition of niobium carbide by high energy milling, cold uniaxial compaction and vacuum sintering in the presence of a liquid phase. The powders of the AISI M2 and M3:2 were processed by high energy milling adding a small quantity of niobium carbide (6% in mass), then the powders were characterized by means of X-ray diffraction (XRD) and scanning electron Microscopy (SEM) plus energy dispersion spectroscopy (EDS) in order to evaluate the milling process. The powders of the AISI M2 and M3:2 with the addition of niobium carbide (NbC) were uniaxially cold compacted and then submitted to vacuum sintering. The sintered samples had their microstructure, porosity and carbide distribution observed and evaluated by means of Scanning Electron Microscopy (SEM) and the mechanical property of hardness was investigated by means of Vickers hardness tests. At least five samples of each steel were investigated.
dc.description.firstpage102
dc.description.lastpage107
dc.description.volume802
dc.identifier.citationARÁUJO FILHO, O. O. DE A.; ARÁUJO FILHO, O. O. DE A.; ANTONELLO, R. T.; GONZALEZ, C. H.; URTIGA FILHO, S. L.; AMBROZIO FILHO, F. Preparation of Molybdenum High Speed Tool Steels with Addition of Niobium Carbide by Powder Metallurgy Techniques. Materials Science Forum, v. 802, p. 102-107, dec. 2014.
dc.identifier.doi10.4028/www.scientific.net/MSF.802.102
dc.identifier.issn1662-9752
dc.identifier.urihttps://repositorio.fei.edu.br/handle/FEI/4839
dc.relation.ispartofMaterials Science Forum
dc.rightsAcesso Restrito
dc.subject.otherlanguageAISI M2 and M3:2 High Speed Steels
dc.subject.otherlanguageHigh Speed Steels
dc.subject.otherlanguageNiobium Carbide
dc.subject.otherlanguagePowder Metallurgy
dc.titlePreparation of Molybdenum High Speed Tool Steels with Addition of Niobium Carbide by Powder Metallurgy Techniques
dc.typeArtigo de evento
fei.scopus.citations1
fei.scopus.eid2-s2.0-84922245684
fei.scopus.subjectCarbide distribution
fei.scopus.subjectEnergy dispersions
fei.scopus.subjectHigh speed tool steels
fei.scopus.subjectM3:2 high speed steel
fei.scopus.subjectManufacturing techniques
fei.scopus.subjectNiobium carbide
fei.scopus.subjectPowder metallurgy techniques
fei.scopus.subjectUniaxial compaction
fei.scopus.updated2024-07-01
fei.scopus.urlhttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84922245684&origin=inward
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