Microstructure evolution of TI-SN-NB alloy prepared by mechanical alloying
Data(s) |
01/01/2007
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Resumo |
In the present study, Ti-16Sn-4Nb alloy was prepared by mechanical alloying (MA). Optical microscopy, scanning electron microscopy combined with energy dispersive X-ray analysis (SEM-EDX), and X-ray diffraction analysis (XRD) were used to characterise the phase transformation and the microstructure evolution. Results indicated that ball milling to 8 h led to the formation of a supersaturated hcp α-Ti and partial amorphous phase due to the solid solution of Sn and Nb into Ti lattice. The microstructure of the bulk sintered Ti-16Sn-4Nb alloy samples made from the powders at shorter ball milling times, i.e. 20 min- 2 h, exhibited a primary α surrounded by a Widmanstätten structure (transformed β); while in the samples made from the powders at longer ball milling times, i.e. 5- 10 h, the alloy evolved to a microstructure with a disordered and fine β phase dispersed homogeneously within the α matrix. These results contribute to the understanding of the microstructure evolution in alloys of this type prepared by powder metallurgy.<br /> |
Identificador | |
Idioma(s) |
eng |
Publicador |
Institute of Materials Engineering Australasia |
Relação |
http://dro.deakin.edu.au/eserv/DU:30007336/li-microstructureevolution-2007.pdf http://www.materialsaustralia.com.au/lib/pdf/MF10.pdf |
Direitos |
Reproduced with the specific permission of the copyright owner. |
Tipo |
Journal Article |