Effect of Copper on Tensile and Hardness of Al-Si Alloy in Automotive Application
Article Sidebar
Main Article Content
Abstract
In current research Copper was employed for preparing a ternary system of Al–Si alloy in different (0.2–2.5 wt. %) the best was taken is (1.5%wt) of copper that circumstances of solidification for improving the mechanical performance of the available in aluminium alloy. Cast iron molds were prepared to obtain tensile strength testing specimens. Alloys were prepared by employing gas furnaces. The molten metal was poured into a preheated cast-iron mold. The obtained alloy structures were studied using an X-ray diffractometer and optical microscopy. The mechanical performance of the prepared alloys was examined under the influence of different hardening conditions in both heat and non-heat-treated conditions. The outcomes showed at the ideal input status of friction stir processing, the cast alloy microstructure was enhanced in terms of refinement of eutectic and primary Si particles, homogeneous dispersion of Si, and the reduction in porosity. The mineral compounds formed during the hardening process were examined using an optical microscope. The highest maximum tensile strength (UTS) was 120 MPa for sample Al-22.5Si, and 147 MPa for sample Al-21Si-1.5Cu, while the highest hardness was 77 HB for sample Al-22.5Si, and 90 HB for sample Al-21Si-1.5Cu.
Article Details
This work is licensed under a Creative Commons Attribution 4.0 International License.
© 2023 The Author(s). Published by College of Science, University of Baghdad. This is an open-access article distributed under the terms of the Creative Commons Attribution 4.0 International License.
References
Stojanovic B. and Epler I., Application of aluminum and aluminum alloys in engineering. Applied Engineering Letters, 2018.
Mehdi H., Sharma S., Anas M., and Sharma N., The Influences of Variation of Copper Content on the Mechanical Properties of Aluminium alloy. International Journal of Material Science Innovations, 2015. 3(3): pp. 74-86.
Jeong C.-Y., High temperature mechanical properties of Al–Si–Mg–(Cu) alloys for automotive cylinder heads. Materials Transactions, 2013. 54(4): pp. 588-594.
Zhu A., Gable B.M., Shiflet G.J., and Starke Jr E.A., Trace element effects on precipitation in Al–Cu–Mg–(Ag, Si) alloys: a computational analysis. Acta materialia, 2004. 52(12): pp. 3671-3679.
Zamani M., Toschi S., Morri A., Ceschini L., and Seifeddine S., Optimisation of heat treatment of Al–Cu–(Mg–Ag) cast alloys. Journal of Thermal Analysis Calorimetry, 2020. 139(6):pp. 3427-3440.
Dong X., Amirkhanlou S., and Ji S., Formation of strength platform in cast Al–Si–Mg–Cu alloys. Scientific reports, 2019. 9(1): pp. 1-11.
Zeren M. and Karakulak E., Study on hardness and microstructural characteristics of sand cast Al-Si-Cu alloys. Bulletin of Materials Science, 2009. 32(6): pp. 617-620.
Verma R.K., Agrawal L., and Awana D., Effect of variation of Silicon and Copper Contents in Aluminium–Silicon–Copper Alloy. International journal on Emerging Technologies, 2013. 4(1): pp. 149-159.
Astm I.J.W.C., PA, USA: ASTM International, ASTM E8/E8M-16a: Standard Test Methods for Tension Testing of Metallic Materials. 2016.
1International A., ASTM E10-17-Standard Test Method for Brinell Hardness of Metallic Materials. 2017, ASTM International West Conshohocken.
Madlul S.F., Sabah M., and Abdullah S.S., Built of Cermet Layer Using Thermal Plasma Spraying (APS). Al-Nahrain Journal of Science, 2011. 14(4): pp. 81-86.
Alam M.T. and Ansari A.H., X-ray diffraction analysis and microstructural examination of al-sic composite fabricated by stir casting. Int. J. Sci. Technol. Manag, 2015. 4: pp. 941-956.
Abdulsahib Y.M., Effect of Copper Addition on the Microstructure and Mechanical Properties of Al-Si Alloy. Al-Qadisiyah Journal for Engineering Sciences, 2014. 7(4): pp. 366-381.