Rapid prototyping of aluminium alloy parts: The effect of infiltration atmosphere

Yu, Peng, Qian, Ma and Schaffer, G.B. (2009). Rapid prototyping of aluminium alloy parts: The effect of infiltration atmosphere. In: M. S. Dargusch, Materials Science Forum: Proceedings of the 4th International Light Metals Technology conference. Light Metals Technology 2009, Gold Coast, Brisbane, Australia, (635-638). 1-3 July 2009. doi:10.4028/www.scientific.net/MSF.618-619.635


Author Yu, Peng
Qian, Ma
Schaffer, G.B.
Title of paper Rapid prototyping of aluminium alloy parts: The effect of infiltration atmosphere
Conference name Light Metals Technology 2009
Conference location Gold Coast, Brisbane, Australia
Conference dates 1-3 July 2009
Proceedings title Materials Science Forum: Proceedings of the 4th International Light Metals Technology conference   Check publisher's open access policy
Journal name Light Metals Technology 2009   Check publisher's open access policy
Place of Publication Uetikon, Zürich, Switzerland
Publisher Trans Tech Publications
Publication Year 2009
Year available 2009
Sub-type Fully published paper
DOI 10.4028/www.scientific.net/MSF.618-619.635
ISBN 9780878493272
0878493271
ISSN 0255-5476
1422-6375
Editor M. S. Dargusch
Volume 618-619
Start page 635
End page 638
Total pages 4
Collection year 2010
Language eng
Formatted Abstract/Summary
An investigation has been made on the infiltration behaviour in rapid prototyping of Al alloy parts under different infiltration atmospheres. An Al 6061 alloy preform was first prepared by selective laser sintering. Then the aluminium precursor powders in the preform were converted into AlN to form a skeletal AlN structure, which was subsequently pressureless infiltrated with a molten Al 6061 alloy under nitrogen, argon or vacuum. The pathway of the infiltrant was determined by density measurements in conjunction with metallographic examination and quantitative image analysis. Detailed comparison of the microstructures at the surface and the centre of the as-infiltrated samples indicates that the pathway into the porous preform is dependent on the infiltration atmosphere. Under vacuum, the infiltrant fills the interior of the preform first and then propagates to the surface. In contrast, under nitrogen or argon, the infiltrant penetrates along the surface prior to filling the interior.
© (2009) Trans Tech Publications, Switzerland.
Subjects C1
861206 Structural Metal Products
091207 Metals and Alloy Materials
0912 Materials Engineering
Keyword Infiltration
Powder
Rapid Prototyping (RP)
Q-Index Code C1
Q-Index Status Confirmed Code

 
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Created: Fri, 27 Nov 2009, 10:55:14 EST by Ms Lynette Adams on behalf of School of Mechanical and Mining Engineering