Abstract
Hot tear susceptibility in VDC casting is strongly affected by the chemical additions of alloys, hardeners and grain refiners. This paper assesses a few different approaches to reducing hot tearing in the cast house. Grain refinement is one commonly used approach, including dosing at cast start. Another technique is to control the alloy content, through the additions of Si, Mg, Mn or Fe which can influence the type and amount of intermetallics present during the final stages of solidification when hot tearing occurs. This paper summarizes experimental findings which assess the influence of additions on a hot tear rating, particularly in 6xxx series alloys. Strategies which could be used in the cast house are discussed. While changes to the bulk metal can have consequences for alloy specification and quality control, additions at cast start could be used to reduce scrap from hot tearing without changing the composition of the saleable product.
Original language | English |
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Title of host publication | Light Metals 2012 |
Subtitle of host publication | Proceedings of the technical sessions presented by the TMS Aluminum Committee at the TMS 2012 Annual Meeting & Exhibition, Orlando, Florida, USA, March 11-15, 2012 |
Editors | Carlos E. Suarez |
Place of Publication | Hoboken, New Jersey |
Publisher | John Wiley & Sons |
Pages | 1133 - 1138 |
Number of pages | 6 |
ISBN (Print) | 9781118291399 |
DOIs | |
Publication status | Published - 2012 |
Event | The Minerals, Metals & Materials Society Annual Meeting and Exhibition 2012 - Orlando, United States of America Duration: 11 Mar 2012 → 15 Mar 2012 Conference number: 141st http://www.tms.org/meetings/annual-12/Am12home.aspx |
Conference
Conference | The Minerals, Metals & Materials Society Annual Meeting and Exhibition 2012 |
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Abbreviated title | TMS Annual 2012 |
Country/Territory | United States of America |
City | Orlando |
Period | 11/03/12 → 15/03/12 |
Internet address |
Keywords
- 6xxx
- Al-Mg-Si alloys
- Grain refinement
- Hot tearing
- Launder