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Weibull verification of reduced pressure test as a tool for assessing Al melt quality
Shahid Bahonar Univ Kerman, Dept Met & Mat Sci, Kerman, Iran..
Shahid Bahonar Univ Kerman, Dept Met & Mat Sci, Kerman, Iran..ORCID iD: 0000-0001-9943-106X
Shahid Bahonar Univ Kerman, Dept Met & Mat Sci, Kerman, Iran..ORCID iD: 0000-0003-1779-8728
2017 (English)In: International Journal of Cast Metals Research, ISSN 1364-0461, E-ISSN 1743-1336, Vol. 30, no 2, p. 87-95Article in journal (Refereed) Published
Abstract [en]

The credibility of reduced pressure test (RPT) as a substitute for Weibull analysis for benchmarking bifilm defects in Al alloys was confirmed by comparing the RPT parameters (2D and 3D porosity, and Bifilm Index) with the Weibull moduli for UTS values for pure Al and Al-0.05Sr alloys. The porosity of RPT samples was found to have an exponential decay relationship with Weibull modulus. A reasonable trend for Bifilm Index could not be found. 3D porosity of RPT samples was found to be more favourable than 2D porosity or Bifilm Index. Some evidence was also found of connections occurring between the sides of bifilm defects at the surfaces of the fractured tensile test bars of Al-0.05Sr alloy which had a relatively high UTS.

Place, publisher, year, edition, pages
Taylor & Francis, 2017. Vol. 30, no 2, p. 87-95
Keywords [en]
Reduced pressure test, Weibull analysis, double oxide film, bifilm, melt quality, Al melt, casting defect
National Category
Materials Engineering
Identifiers
URN: urn:nbn:se:kth:diva-263987DOI: 10.1080/13640461.2016.1244245ISI: 000396689500004Scopus ID: 2-s2.0-84990903025OAI: oai:DiVA.org:kth-263987DiVA, id: diva2:1371594
Note

QC 20191120

Available from: 2019-11-20 Created: 2019-11-20 Last updated: 2019-11-20Bibliographically approved

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Raiszadeh, RaminDoostmohammadi, Hamid
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