Pressure Assisted Sintering of an Aluminium Alloy

Bonner, S. J., Schaffer, G. B. and Yao, J-Y (2009). Pressure Assisted Sintering of an Aluminium Alloy. In: M. Dargusch and S. M. Keay, Light Metals Technology 2009. Light Metals Technology Conference 2009, Gold Coast, Australia, (627-630). 29 June - 1 July, 2009. doi:10.4028/

Author Bonner, S. J.
Schaffer, G. B.
Yao, J-Y
Title of paper Pressure Assisted Sintering of an Aluminium Alloy
Conference name Light Metals Technology Conference 2009
Conference location Gold Coast, Australia
Conference dates 29 June - 1 July, 2009
Proceedings title Light Metals Technology 2009   Check publisher's open access policy
Journal name Materials Science Forum   Check publisher's open access policy
Place of Publication Netherlands
Publisher Trans Tech Publications
Publication Year 2009
Sub-type Fully published paper
DOI 10.4028/
Open Access Status
ISBN *****************
ISSN 0255-5476
Editor M. Dargusch
S. M. Keay
Volume 618-619
Start page 627
End page 630
Total pages 4
Collection year 2010
Language eng
Abstract/Summary An aluminium alloy was sintered using a conventional press and sinter process, at various gas pressures, to observe the effect of sintering gas pressure on the densification rate. Compacts of aluminium alloy 2712 (Al-3.8Cu-1Mg-0.7Si-0.1Sn) were prepared from elemental powders and sintered in a horizontal tube furnace under nitrogen or argon at 590 C for up to 60 minutes, and air cooled. The gas flow was adjusted to achieve specific gas pressures in the furnace. It has been found that increasing the nitrogen pressure at the stag of the isothermal holding stage to 160kPa increased the densification rate compared to standard atmospheric pressure sintering. Increasing the nitrogen pressure further, up to 600kPa, had no additional benefit. The densification rate was increased significantly by increasing the gas pressure to 600kPa during both heating and isothermal holding. Under argon the elevated pressure did not increase the densification rate. Results seem to suggest that the beneficial effect of the elevated pressure on the rate of densification is related to nitride formation.
Subjects 091207 Metals and Alloy Materials
970109 Expanding Knowledge in Engineering
Keyword Aluminium
Powder Metallurgy
Gas pressure
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

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Created: Fri, 23 Apr 2010, 14:49:29 EST by Rose Clements on behalf of School of Mechanical and Mining Engineering