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The Potential for use of Heat Treated Aluminum High Pressure Die-Castings in Engine Applications
Technical Paper
2008-32-0058
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Aluminum alloys used for most high pressure die-castings manufactured worldwide are based on the Al-Si-Cu-(Fe) system, examples being the alloys (AA)380, (JIS) ADC10, (JIS) ADC12, and EN-AC-AlSi8Cu3(Fe). These alloys are used for a wide range of applications including engines and drivetrains for which they are usually heat treated to a stabilized T5 temper. Such a treatment does not, however, provide a significant improvement to the as-cast mechanical properties.
The reason why conventionally produced HPDC components are not heat treated to the higher strength T6 or T7 tempers is that a standard solution treatment cycle (e.g. 8h at 540°C) causes internal pores to expand resulting in unacceptable surface blistering and dimensional instability. Recently a modified heat treatment regime has been developed which avoids these problems and allows large improvements (e.g. around 100%) to be achieved in some tensile properties. Fatigue resistance and thermal conductivity are also improved. The potential for using age hardened, high pressure diecast alloys for engine and drivetrain applications can now be evaluated in light of this discovery. In the current paper, a summary of results to date are presented, and brief consideration is given to possible changes in the design of future engine and drivetrain components.
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Authors
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Citation
Lumley, R., "The Potential for use of Heat Treated Aluminum High Pressure Die-Castings in Engine Applications," SAE Technical Paper 2008-32-0058, 2008, https://doi.org/10.4271/2008-32-0058.Also In
References
- Lumley, R.N O'Donnell, R.G Gunasegaram, D.R. Givord, M “Heat Treatment of High Pressure Diecasting Alloys” 2005
- Lumley, R.N O'Donnell, R.G. Gunasegaram, D.R. Givord, M “Heat Treatment of High Pressure Diecastings” Metallurgical and Materials Transactions A 38A 2564 2574 2007
- Lumley, R.N. O'Donnell, R.G. Gunasegaram, D.R. Givord, M. “Development of Heat Treatments to Strengthen High Pressure Diecastings” International Foundry Research / Giessereiforschung 59 3 8 13 2007
- Lumley, R.N. O'Donnell, R.G. Gunasegaram, D.R. Givord, M. “Blister Free Heat Treatment of High Pressure Diecasting Alloys.” Materials Science Forum 519-522 351 359 2006
- Lumley, R.N. Griffiths, J.R. “Fatigue Resistance of Heat Treated Aluminium High Pressure Diecastings” Advanced Materials Research 41-42 141 146 2008
- Lumley, R.N. Griffiths, J.R. “Fatigue and Fracture Resistance of Heat Treated Aluminium High Pressure Die-castings” Conference Proceedings 112 th Metalcasting Congress Atlanta, Georgia, USA NADCA 2008
- Lumley, R.N. Gunasegaram, D.R. Gershenzon, M. O'Donnell, R.G. “The Effect of Alloy Composition on the Heat Treatment of Aluminum High Pressure Diecastings” Conference Proceedings 111 th Metalcasting Congress Houston, Texas, USA NADCA 2007
- Lumley, R.N. Gunasegaram, D.R. Gershenzon, M. O'Donnell, R.G. “The Effect of Alloying Elements on the Heat Treatment Response of Aluminium High Pressure Die-Castings” Conference Proceedings IFHTSE 2007 Brisbane, Australia
- Hunsicker, H.Y. Rosenhain Centenary Conference on Contributions of Physical Metallurgy to Engineering Practice The Royal Society London 1996 359
- Lumley, R.N. Polmear, I.J. Groot, H. Ferrier, J. “Thermal Characteristics of Heat Treated Aluminum High Pressure Die-Castings” Scripta Materialia 58 1006 1009 2008
- Lumley, R.N. Tartaglia, S. “A new Heat Treatment Process for Aluminum High Pressure Diecastings - Development of Procedures for Industrially Produced Components” Conference Proceedings 111 th Metalcasting Congress Houston, Texas, USA NADCA 2007