Microstructural features evaluation of age-hardened A 226 cast alloy by image analysis

• Autorzy: Kucharikova L. , Tillova E.

Identyfikatory

DOI

10.30657/pea.2017.17.01

• Języki publikacji: EN

Abstrakty

EN

Age-hardening provides one of the most widely used mechanisms for the strengthening of aluminum alloys. The age-hardening involves three steps: solution treatment, quenching and aging. The temperature of solution treatment and aging is very important in order to reach desired properties of castings. The optimum temperature of solution treatment and aging led to formation microstructural features in form which does not lead to decreasing properties, but increasing ones. The major micro-structural features in A 226 cast alloys which are responsible for increasing properties are: eutectic Si particles, Cu-rich phases, Fe-rich phases and porosity. The increase of properties depends on morphology, size and volume of microstructural features. In order to assess age-hardening influence on microstructural features in A226 cast alloys were used as possibilities of evaluation by means of image analysis. Quantitative analysis decelerate changes in microstructure includes the spheroidization and coarsening of eutectic silicon, gradual disintegration, shortening and thinning of Fe-rich intermetallic phases, the dissolution of precipitates and the precipitation of finer hardening phase (Al2Cu) further increase in the hardness and tensile strength in the alloy. Changes of mechanical properties were measured in line with STN EN ISO.

Słowa kluczowe

EN

age-hardening; aluminum cast alloys; image analysis; quantitative analysis; microstructural features

PL

utwardzanie przez starzenie; stopy aluminium; analiza obrazu; analiza ilościowa

• Wydawca: Oficyna Wydawnicza Stowarzyszenia Menedżerów Jakości i Produkcji
• Czasopismo: Production Engineering Archives
• Rocznik: 2017
• Tom: Vol. 17
• Strony: 3--8
• Opis fizyczny: Bibliogr. 15 poz., rys.

Twórcy

autor

Kucharikova L.

• University of Žilina, Faculty of Mechanical Engineering, Department of Materials Engineering, Univerzitná 8215/1, 010 26 Žilina

autor

Tillova E.

• University of Žilina, Faculty of Mechanical Engineering, Department of Materials Engineering, Univerzitná 8215/1, 010 26 Žilina

Bibliografia

• 1. ABDULWAHAB M. 2008. Studies of the Mechanical Properties of Age-hardened Al-Si-Fe-Mn Alloy. Australian Journal of Basic and Applied Sciences, Vol. 2 (4), 839-843.
• 2. DAS S. K. 2006. Designing Aluminum Alloys for a Recycling Friendly World. Materials Science Forum, Vol. 519-521, 1239-1244.
• 3. DAS K S., GREN J. A. S. 2010. Aluminum Industry and Climate Change-Assessment and Responses. Jom, Vol. 62 (2), 27-31.
• 4. GROSSELLE, F., TIMELLI G., BONOLLO F. 2010. Doe applied to microstructural and mechanical properties of Al-Si-Cu-Mg casting alloys for automotive applications. Materials Science and Engineering A 527, 3536-3545.
• 5. JOHANSEN H. G. 1994. Structural Aluminum Materials. TALAT Lecture 2202 - Basic Level, 2-28.
• 6. LI R. X., LI R. D., HE L. Z., LI C. X., GRUAN H. R., HUET Z. Q. 2004. Age hardening behavior of cast Al–Si base alloy, Materials Letters, 58, 2096-2101.
• 7. RIOS C.T., CARAM R., BOLFARINI C., BOTTA F. W. J., KIMINAMI C. S. 2003. Intermetallic compounds in the Al-Si-Cu system. Acta microscopia, 12, 77-82.
• 8. ROMANKIEWICZ R., ROMANKIEWICZ F. 2014. The influence of modification for structure and impact resistance of silumin AlSi11. Production Engineering Archives, Vol. 3 (2), 6-9.
• 9. SHAHA S.K., ET AL. 2017. Ageing characteristics and high-temperature tensile properties of Al–Si–Cu–Mg alloys with micro-additions of Mo and Mn. Materials Science and Engineering A. Vol. 684, 726-736.
• 10. SENČÁKOVÁ L., VIRČÍKOVÁ E. 2007. Life cycle assessment of primary aluminum production. Acta Metallurgica Slovaca, Vol. 13 (3), 412-419.
• 11. SJŐLANDER E., SEIFEDDINE S. 2010. The heat treatment of Al-Si-Cu-Mg casting alloys. Journal of Materials Processing Technology, Vol. 210 (10), 1249-1259.
• 12. STN EN ISO 6892-1:2010 (42 0310). Metallic materials. Tensile testing. Part 1: Method of test at ambient temperature.
• 13. STN EN ISO 6506-1:2015 (42 0371). Metallic materials. Brinell hardness. Part 1: Test method.
• 14. TASH M., SAMUEL H. F., MUCCIARDI F., DOTY W. H. 2007. Effect of metallurgical parameters on the hardness and microstructural characterization of as-cast and heat-treated 356 and 319 aluminum alloys. Materials Science and Engineering A443, 185-201.
• 15. VAŠKO A., MARKOVIČOVÁ M., ZATKALÍKOVÁ V., TILLOVÁ E. 2014. Quantitative evaluation of microstructure of graphitic cast irons. Manufacturing technology, Vol. 14 (3), 478-182.

Uwagi

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2018).