Journal
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
Volume 598, Issue -, Pages 360-367Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.msea.2014.01.055
Keywords
Titanium alloy; Microstructural evolution; Mechanical properties; Powder metallurgy
Categories
Funding
- Ministry of Business, Innovation and Employment (MBIE), New Zealand [UOWX1001]
- New Zealand Ministry of Business, Innovation & Employment (MBIE) [UOWX1001] Funding Source: New Zealand Ministry of Business, Innovation & Employment (MBIE)
Ask authors/readers for more resources
The microstructural evolution during extrusion of a powder mixture of HDH Ti, Al and Al35V65 master alloy powders with a nominal composition Ti-6Al-4V(wt%) at 1300 degrees C and the mechanical properties of the extruded rod were studied. The results show that the amount of plastic deformation of the powder particles has a significant effect on the dissolution of the Al35V65 master alloy particles which in turn significantly influences the microstructure, mechanical properties and fracture behaviour of the extruded rod. The Al35V65 master alloy particles are completely dissolved in the material passing through the extrusion die orifice due to the large amount of powder particle deformation, while a large fraction of the Al35V65 master alloy particles are not dissolved in the undeformed regions close to the top of and in the dead zone of the as-sintered compact being extruded. The average yield strength, ultimate tensile strength and elongation to fracture of the as-extruded Ti-6Al-4V alloy rod are 1255 MPa, 1300 MPa and 7.1%, respectively, which are comparable to those of Ti-6Al-4V alloy produced by conventional methods. The fracture behaviour of the Ti-6Al-4V alloy during tensile testing is also examined and discussed. (C) 2014 Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available