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Hot Isostatic Pressing of A356 and 380/383 Aluminum Alloys: An Evaluation of Porosity, Fatigue Properties and Processing Costs
Technical Paper
2000-01-0062
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Event:
SAE 2000 World Congress
Language:
English
Abstract
Aluminum alloy castings are attractive when a light weight, inexpensive, near net shape component is desired. Unfortunately, the presence of internal porosity within these materials can have a significant detrimental effect upon the mechanical properties, appearance, and function of these parts. Hot isostatic pressing (HIP) and Densal® (a proprietary hot isostatic densification process) have been employed to reduce or eliminate porosity in cast metals. This paper compares the fatigue strength and microstructures of end chill sand cast A356 and high pressure, die cast 380 and 383 aluminum alloys which have undergone either HIP or Densal® processing with identical components in the as-cast condition. The castings which underwent isostatic processing show decreased porosity and improved fatigue strength and functionality. Additionally, the economics and suitability for high volume production of these two post-cast processes are reviewed.
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Citation
Mashl, S., Hebeisen, J., Apelian, D., and Wang, Q., "Hot Isostatic Pressing of A356 and 380/383 Aluminum Alloys: An Evaluation of Porosity, Fatigue Properties and Processing Costs," SAE Technical Paper 2000-01-0062, 2000, https://doi.org/10.4271/2000-01-0062.Also In
References
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