The skin effect in high pressure die casting Al alloys

Yang, Kun Vanna, Nagasekhar, Anumalasetty Venkata, Lumley, Roger and Caceres, Carlos Horacio (2010). The skin effect in high pressure die casting Al alloys. In: Shinji Kumai, Osamu Umezawa, Yoshimasa Takayama, Takayuki Tsuchida and Tatsuo Sato, Proceedings of the 12th International Conference on Aluminium Alloys. The 12th International Conference on Aluminium Alloys (ICAA12), Yokohama, Japan, (687-692). 5-9 September 2010.

Attached Files (Some files may be inaccessible until you login with your UQ eSpace credentials)
Name Description MIMEType Size Downloads
Author Yang, Kun Vanna
Nagasekhar, Anumalasetty Venkata
Lumley, Roger
Caceres, Carlos Horacio
Title of paper The skin effect in high pressure die casting Al alloys
Conference name The 12th International Conference on Aluminium Alloys (ICAA12)
Conference location Yokohama, Japan
Conference dates 5-9 September 2010
Proceedings title Proceedings of the 12th International Conference on Aluminium Alloys
Place of Publication Tokyo, Japan
Publisher The Japan Institute of Light Metals
Publication Year 2010
Sub-type Fully published paper
Editor Shinji Kumai
Osamu Umezawa
Yoshimasa Takayama
Takayuki Tsuchida
Tatsuo Sato
Start page 687
End page 692
Total pages 6
Language eng
Abstract/Summary Vickers microhardness cross sectional maps of cast-to-shape flat specimens 3 mm thick were determined for the (mass %) Al-9Si-2Cu-0.3Mg and Al-5Mg-2Si-Mn high pressure die cast alloys. Higher hardness numbers were generally obtained near the casting surface, the corner of the cross section and at the segregation band; they appeared connected with a locally finer grain size, the concentration of positive macro segregation and in some cases large intermetallic particles. Lower hardness numbers were found at the core and some stochastically distributed areas, which were accounted for by the locally coarser solidification microstructure and localized microporosity. The core region was up to some 15 HV softer than the surface layer. The maps indicated that the harder surface layer or skin was generally uneven and asymmetrical. The overall behavior of the microhardness was accounted for in terms of microporosity, grain size and intermetallic phases’ distribution and uniformity in size.
Keyword High pressure die casting
Aluminium alloys
Mechanical properties
Skin effect
Q-Index Code E1
Q-Index Status Provisional Code
Institutional Status UQ

 
Versions
Version Filter Type
Citation counts: Google Scholar Search Google Scholar
Created: Wed, 23 Mar 2011, 14:50:26 EST by Sally Beard on behalf of School of Mechanical and Mining Engineering