Tailoring Al-7Si-0.3Mg cast alloy properties to represent HPDC tensile and fatigue behaviour in component prototypes
2016 (English)In: La Metallurgia Italiana, ISSN 0026-0843, Vol. 108, no 6, 33-36 p.Article in journal (Refereed) Published
To produce prototypes with mechanical properties expectable from EN AC 46000 HPDC components, prototyping related processes such as sand and plaster gravity casting as well as proper alloying and post solidification processes need to be understood and adjusted. Therefore, the influence of process, composition and heat treatment on tensile and fatigue behaviour has been investigated for an EN AC 42100 alloy. Sand cast test samples comprised the base alloy in as-cast condition and T5 treated as well as a 2 wt. % Cu addition in as-cast condition. Plaster cast test samples consisted of the base alloy in ascast condition and T6 treated as well as a 1.7 wt. % Cu addition in as-cast condition. Tensile and fully reversed bending fatigue tests (R=-1) have been performed and the results have been compared to EN AC 46000 HPDC values. Samples in heat treated conditions and with Cu addition exhibited superior tensile properties than the base alloy in as-cast state for both casting processes. Yield strength and elongation values for the sand cast T5 treated and with Cu addition samples were similar to the HPDC ones. In terms of fatigue behaviour, T6 treated and with Cu addition samples exhibited strength improvements for plaster cast samples, while no changes were observed for sand cast samples. Only sand cast samples exhibited similar fatigue behaviour to the HPDC samples. The sand cast T5 treated samples were found to produce the most similar overall mechanical behaviour to EN AC 46000 HPDC.
Place, publisher, year, edition, pages
Milano: Associazione Italiana di Metallurgia , 2016. Vol. 108, no 6, 33-36 p.
aluminium alloys, prototyping, tensile properties, fatigue properties, sand cast, plaster cast
Metallurgy and Metallic Materials
IdentifiersURN: urn:nbn:se:hj:diva-31164OAI: oai:DiVA.org:hj-31164DiVA: diva2:950914