Effect of the refining process on porosity and selected mechanical properties of AlSi7Mg alloy pressure castings

• Autorzy: Chowaniec Leszek , Piątkowski Jarosław

Identyfikatory

DOI

10.12913/22998624/195478

• Języki publikacji: EN

Abstrakty

EN

Based on research it has been found that the refining parameter that has a significant influence on the density of the alloy, as a controllable factor and also responsible for porosity, is the content of the introduced mixture of NH2. For this reason, the article shows the effect of the content of the refining mixture (90%N+10%H2) on porosity (qualitative and quantitative) and selected mechanical properties (Rm; R0.2, A) of AlSi7Mg alloy, used for die-cast automotive rims. It was found that the use of this mixture during the refining of AlSi7Mg alloy in a ladle with a capacity of about 2.000 kg provides the best results in terms of reducing porosity and improving mechanical properties when its content does not exceed 19.25 l·min-1. (approximately 55 s. of introduction into the alloy). Exceeding these values causes both deterioration of porosity (qualitatively and quantitatively) and hardness, as well as selected mechanical properties. The research was conducted at Superior Industries Production Poland Stalowa Wola under industrial production conditions.

Słowa kluczowe

EN

pressure die-cast; Al-Si alloy; refining; porosity; mechanical properties

• Wydawca: Lublin University of Technology ; Polish Society of Ecological Engineering (PTIE), Branch of PTIE in Lublin
• Czasopismo: Advances in Science and Technology. Research Journal
• Rocznik: 2025
• Tom: Vol. 19, no. 1
• Strony: 220--228
• Opis fizyczny: Bibliogr. 31 poz., fig., tab.

Twórcy

autor

Chowaniec Leszek

• Superior Industries Production Poland sp. z o.o., 37-450 Stalowa Wola, Poland

• https://orcid.org/0009-0000-6844-698X

autor

Piątkowski Jarosław

• Silesian University of Technology, Faculty of Materials Engineering, 40-019 Katowice, Poland

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