Repeatability of tensile properties in high pressure die-castings of an Al-Mg-Si-Mn alloy View Full Text


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Article Info

DATE

2015-08-18

AUTHORS

Hailin Yang, Shouxun Ji, Douglas Watson, Zhongyun Fan

ABSTRACT

High pressure die-castings of an Al-Mg-Si-Mn alloy have been assessed in terms of the repeatability of the mechanical properties including yield strength, ultimate tensile strength and elongation by the normal standard deviations method and by the Weibull statistical model with three parameters. It was found that the round samples had the maximum Weibull modulus, indicating the best repeatability. The machined samples exhibited the second best of Weibull modulus. Among the square samples, the 2 mm and 5 mm thick samples had the lowest and the highest Weibull modulus respectively, indicating that the repeatability for the castings was influenced by the wall thickness. The microstructural uniformity and porosity levels are critical factors in determining the repeatability of the high pressure die-castings. A less segregation in the microstructure could uniform the stress distribution in the die-castings and a less porosity in the casting could reduce the sources for brittle fracture. These improved the repeatability in casting production. More... »

PAGES

936-943

References to SciGraph publications

Identifiers

URI

http://scigraph.springernature.com/pub.10.1007/s12540-015-5108-0

DOI

http://dx.doi.org/10.1007/s12540-015-5108-0

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1047982536


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