Effect of Soft Annealing Treatment on Impact Strength and Hardness of the EN AC-AlSi11 Alloy

• Autorzy: Jarko A.

Identyfikatory

DOI

10.1515/afe-2017-0090

• Języki publikacji: EN

Abstrakty

EN

The paper presents research on the effects of soft annealing parameters on a change of the impact strength KC and Brinell hardness (HB) of the EN AC-AlSi11 alloy. The research has been performed according to the trivalent testing plan for two input parameters – temperature in the range between 280°C and 370°C and time in the range between 2 and 8 hours. The application of such heat treatment improves the plasticity of the investigated alloy. The improvement of the impact strength KC by 71% and the decrease of the hardness HB by 20% was achieved for the soft annealing treatment conducted at a temperature 370°C for 8 hours, compared to the alloy without the heat treatment. A change of the form of eutectic silicon precipitations which underwent refinement, coagulation and partial rounding, had a direct effect on the hardness HB and impact strength KC. The results obtained were used to prepare space plots enabling the temperature and time for soft annealing treatment to be selected with reference to the obtained impact strength KC and hardness HB of the alloy with the heat treatment.

Słowa kluczowe

EN

heat treatment; aluminium alloys; alpax alloy; silumins; soft annealing

PL

obróbka cieplna; stopy aluminium; stop alpax; siluminy; wygrzewanie

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2017
• Tom: Vol. 17, iss. 3
• Strony: 55--58
• Opis fizyczny: Bibliogr. 15 poz., rys., tab., wykr.

Twórcy

autor

Jarko A.

• University of Bielsko-Biała, Department of Production Engineering and Automation, ul. Willowa 2, 43- 300 Bielsko-Biała, Poland

Bibliografia

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• [2] Soiński, M.S., Jakubus, A., Kordas, P. & Skurka, K. (2016). Trends in the Production of Castings in the World and in Poland in the XXI Century. Archives of Foundry Engineering. 16(2), 5-10. DOI: 10.1515/afe-2016-0017.
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• [4] Górny, Z. (1992). Casting non-ferrous alloys. Warszawa: WNT. (in Polish).
• [5] Dobrzański, L.A. (2002). Fundamentals of materials science and physical metallurgy. Warszawa: WNT. (in Polish).
• [6] Pezda, J. (2014). Effect of selected parameters of the heat treatment operations on technological quality of machinery components poured from silumins. Bielsko-Biała: Scientific Publishers ATH. (in Polish).
• [7] Perzyk, M. (2014). Foundry. Warszawa: WNT. (in Polish).
• [8] PN-EN 1706:2001. Aluminium and aluminum alloys - Castings - Chemical composition and mechanical properties. Polish Committee for Standardization. (in Polish).
• [9] Pezda, J. (2015). Effect of the T6 heat treatment on change of mechanical properties of the AlSi12CuNiMg alloy modified with strontium. Archives of Metallurgy and Materials. 60(2), 627-632. DOI: 10.1515/amm-2015-0183.
• [10] Poloczek, Ł. & Kiełbus, A. (2016). Influence of technological factors on the quality of aluminium alloys castings. Zarządzanie przedsiębiorstwem. 19(2), 14-19.
• [11] Romankiewicz, R. & Romankiewicz, F. (2009). Study on modification of AlSi11 alloy. Archiwum Technologii Maszyn i Automatyzacji. 29(1), 51-56.
• [12] Romankiewicz, R. & Romankiewicz, F. (2014). The influence of modification for structure and impact resistance of silumin AlSi11. Production Engineering Archive. 3(2), 6-9.
• [13] Mohamed, A.M.A. & Samuel, F.H. (2012). A review on the heat treatment of Al-Si-Cu/Mg casting alloys. Czerwinski F. (Eds.). Heat Treatment - Conventional and Novel Applications (pp. 55-72). InTech. DOI: 10.5772/50282.
• [14] Jarco, A. (2016). Improvement of plasticity of the AlSi11 alloy due to soft annealing treatment. Transactions of Foundry Research Institute, LVI (3), 261-266. DOI: 10.7356/iod.2016.18.
• [15] Poniewierski, Z. (1989). Crystallization, structure and properties of silumins. Warszawa: WNT. (in Polish).

Uwagi

PL

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę (zadania 2017)