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Heat treating of High Pressure Die Cast Components; challenges and possibilities
Jönköping University, School of Engineering, JTH. Research area Materials and manufacturing – Casting. Swerea SWECAST.
Jönköping University, School of Engineering, JTH. Research area Materials and manufacturing – Casting.
Jönköping University, School of Engineering, JTH. Research area Materials and manufacturing – Casting.
Jönköping University, School of Engineering, JTH. Research area Materials and manufacturing – Casting.
2014 (English)In: Light Metals 2014 / [ed] J. Grandfield, Springer, 2014, p. 183-188Conference paper, Published paper (Refereed)
Abstract [en]

Improving the mechanical properties of high pressure die-cast (HPDC) components through T6 heat treatment is still a challenge due to surface blistering. In the current study, theoretical formulation of porosity growth in cast aluminum, EN AC 43100, has been developed along with differential scanning calorimetry and wave dispersive spectrometry to determine temperature ranges of phase transformations and Al-matrix enrichment of solutes. Optimal combinations of time and temperature for maximum possible Mg dissolution in the Al-matrix without blistering as well as tensile testing on samples extracted from HPDC components and samples from the gradient solidification technique that offers samples with low porosity levels have been performed. The results demonstrate that even if the Mg level in the Al-matrix increases and no blisters on component surface are apparent, the strength outcome is limited and can be degraded. Consequently no guarantees are granted that with a seemingly well performed T6 treatment, strength improvement will be realized.

Place, publisher, year, edition, pages
Springer, 2014. p. 183-188
Keywords [en]
High Pressure Die Casting, Aluminum, EN AC 43100, Solution Treatment, Mechanical Properties
National Category
Metallurgy and Metallic Materials
Identifiers
URN: urn:nbn:se:hj:diva-22762DOI: 10.1007/978-3-319-48144-9_32OAI: oai:DiVA.org:hj-22762DiVA, id: diva2:679780
Conference
The Minerals, Metals and Materials Society, 143rd annual meeting,TMS 2014,San Diego, USA
Projects
HighT
Funder
VINNOVAAvailable from: 2013-12-16 Created: 2013-12-16 Last updated: 2018-09-11

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CiteExportLink to record
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