Deformation and fracture behaviour of porous FVS0812 aluminium alloy prepared by spray deposition
Authors: Chen, Z.H.; Zhan, M.Y.; Xia, W.J.
Source: Materials Science and Technology, Volume 20, Number 12, December 2004 , pp. 1621-1626(6)
Publisher: Maney Publishing
Abstract:The deformation and fracture behaviour of a porous FVS0812 aluminium alloy prepared by spray deposition was investigated using compression testing. Rapid densification of the porous alloy was observed before a height reduction of ~50%. The optimum strain rate and deformation temperature to achieve maximum density were determined. Microstructural evolution involved the following stages: breakup of boundaries between adjacent particles; plastic deformation of particles; and collapse of large pores into various smaller pores and their disappearance. A strain hardening phenomenon occurred at all strains when compression was carried out at at 573 and 673 K, while a recovery mechanism came into operation at 773 K and a true strain of 0.2. The critical strain for the occurrence of strain softening in the porous alloy was much higher than that for the fully dense alloy. The fracture criteria curve of the porous alloy was a straight line, with a slope of ~0.45268 at high temperature and ~0.47636 at room temperature, almost parallel to that of the fully dense alloy in homogeneous compression.
Document Type: Research Article
Affiliations: School of Materials Science and Engineering, Hunan University, Changsha 410082, China
Publication date: 2004-12-01
Authors wishing to cite fast track papers should give the journal name and the article DOI. This will enable reference linking via CrossRef and allow forward and backward citation tracking systems to associate the fast track citation with the final journal reference.Materials Science and Technology is the successor of two previous titles, for which digitised archives are available: Metal Science (Vols. 1—17; 1967—84) and Metals Technology (Vols. 1—11; 1974—84).
Ironmaking & Steelmaking: Products, Processes and Applications is Journal of the Month for June 2013! Download 3 years' worth of free content, watch video interviews, read article updates and more: http://www.maneypublishing.com/jotm/irs.
- Editorial Board
- Information for Authors
- Subscribe to this Title
- Terms & Conditions
- Online submission site
- ingentaconnect is not responsible for the content or availability of external websites