Physicochemical analysis of Ti-Si-B powder aalloys
Contribuinte(s) |
Universidade Estadual Paulista (UNESP) |
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Data(s) |
27/05/2014
27/05/2014
26/11/2012
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Resumo |
Titanium alloys of Ti-Si-B system were manufactured by blended elemental powder method using Ti, Si and B powders as starting materials. It was found that uniaxial and isostatic pressing followed by hot pressing at around 1000°C, for 20 minutes, provided good densification of such alloys. The physicochemical studies were performed by means of scanning electron microscopy, X-ray diffraction, atomic force microscopy and microindentation/wear tests. The investigations revealed a multiphase microstructure formed mainly by α-titanium, Ti6Si2B, Ti5Si3, TiB and Ti3Si phases. The phase transformations after pressureless sintering at 1200°C was also studied by X-ray diffraction for the Ti-18Si-6B composition. As stated in some other researches, these intermetallics in the α-titanium matrix provide high wear resistance and hardness, with the best wear rate of 0.2 mm3/N.m and the highest hardness of around 1300 HV. © (2012) Trans Tech Publications, Switzerland. |
Formato |
287-292 |
Identificador |
http://dx.doi.org/10.4028/www.scientific.net/MSF.727-728.287 Materials Science Forum, v. 727-728, p. 287-292. 0255-5476 http://hdl.handle.net/11449/73758 10.4028/www.scientific.net/MSF.727-728.287 2-s2.0-84869477793 |
Idioma(s) |
eng |
Relação |
Materials Science Forum |
Direitos |
closedAccess |
Palavras-Chave | #High-energy ball milling #Sintering #Titanium alloys #Blended elemental powders #High wear resistance #Isostatic pressing #Micro indentation #Multiphase microstructure #Physico-chemical analysis #Physicochemical studies #Pressureless sintering #Wear rates #Atomic force microscopy #Ball milling #Hardness #Hot pressing #Intermetallics #Scanning electron microscopy #Silicon #Titanium #Titanium compounds #X ray diffraction |
Tipo |
info:eu-repo/semantics/conferencePaper |