Engineering Transactions, 0, 0, pp. , 0
10.24423/EngTrans.1156.20201029

Microstructural Investigation and Wear Characteristics of Al-Si-Ti Cast Alloys

Akeel Dhahir SUBHI
https://orcid.org/0000-0003-2568-4560
University of Technology, Baghdad-Iraq
Iraq

Ali Abbar KHLEIF
University of Technology, Baghdad-Iraq
Iraq

Qasim Saad ABDUL-WAHID
University of Al-Qadisiyah, Diwaniya, Iraq
Iraq

Hypoeutectic Al-7Si alloys containing various titanium proportions (0.8–1.6%) were produced and analyzed in this work. The wear characteristics of Al-Si alloys were studied under the conditions of dry sliding at various applied loads. Optical microscope (OM), scanning electron microscopy (SEM) and X-ray diffraction (XRD) were used to depict the microstructure, worn surface and phases, respectively. Phases of α-Al, eutectic and Ti9Al23 were recognized in the Al-Si-Ti alloys matrix. Considerable coarsening took place in α-Al and eutectic silicon in a fully eutectic through solidification. The hardness was increased as the titanium proportion increased. Furthermore, significant changes were found in the wear rate depending on the
titanium proportion added and load applied.
Keywords: hypoeutectic Al-Si alloy; microstructural investigation; intermetallic compound; wear characteristics
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References

Das S., Mondal D.P., Sawla S., Ramkrishnan N., Synergic effect of reinforcement and heat treatment on the two body abrasive wear of an Al–Si alloy under varying loads and abrasive sizes, Wear, 264(1–2): 47–59, 2008, doi: 10.1016/j.wear.2007.01.039.

Fragomeni J.M., Characterization the brittle fracture and the ductile to brittle transition to ductile transition of heat-treated binary aluminum-lithium alloys, Engineering Transactions, 49(4): 573–598, 2001.

Kumar A., Sasikumar C., Effect of vanadium addition to Al-Si alloy on its mechanical, tribological and microstructure properties, Materials Today: Proceedings, 4(2- Part A): 307–313, 2017, doi: 10.1016/j.matpr.2017.01.026.

Hurtalova L., Tillova E., Chalupova M., The structure analysis of secondary (recycled) AlSi9Cu3 cast alloy with and without heat treatment, Engineering Transactions, 61(3): 197–218, 2013.

Nikanorov S.P., Volkov M.P., Gurint V.N., Burenkov Yu.A., Derkachenko L.I., Kardashev B.K., Regel L.L., Wilcox W.R., Structural and mechanical properties of Al-Si alloys obtained by fast cooling of a levitated melt, Materials Science and Engineering: A, 390(1–2): 63–69, 2005, doi: 10.1016/j.msea.2004.07.037.

Kaisera M.S., Sabbir S.H., Kabir M.S., Soummo M.R., Al Nur M., Study of mechanical and wear behaviour of hyper-eutectic Al-Si automotive alloy through Fe, Ni and Cr addition, Materials Research, 21(4): 1–9, 2018, doi: 10.1590/1980-5373-MR-2017-1096.

Apelian D., Aluminum Cast Alloys: Enabling Tools for Improved Performance, North American Die Casting Association, New York, 2009.

Jorstad J., Apelian D., Hypereutectic Al-Si alloys: practical casting considerations, International Journal of Metalcasting, 3(3): 13–36, 2009, doi: 10.1007/bf03355450.

Hirsch J., Aluminium in innovative light-weight car design, Materials Transactions, 52(5): 818–824, 2011, doi: 10.2320/matertrans.l-mz201132.

Stojanovic B., Bukvic M., Epler I., Application of aluminum and aluminum alloys in engineering, Applied Engineering Letters, 3(2): 52–62, 2018, doi: 10.18485/aeletters.2018.3.2.2.

Basavakumar K.G., Mukunda P.G., Chakraborty M., Influence of melt treatments on sliding wear behavior of Al–7Si and Al–7Si–2.5Cu cast alloys, Journal of Materials Science, 42(18): 7882–7893, 2007, doi: 10.1007/s10853-007-1633-7.

Taghiabadi R., Ghasemi H.M., Shabestari S.G., Effect of iron-rich intermetallics on the sliding wear behavior of Al–Si alloys, Materials Science and Engineering: A, 490(1–2): 162–170, 2008, doi: 10.1016/j.msea. 2008.01.001.

Abdul-latiff N.E., Subhi A.D., Hussein M.B., Effect of hot deformation on the wear behavior of Al2O3/ A356 nano-composites, Modern Applied Science, 9(11): 153–160, 2015, doi: 10.5539/mas.v9n11p153.

Saheb N., Laoui T., Daud A.R., Harun M., Radiman S., Yahaya R., Influence of Ti addition on wear properties of Al–Si eutectic alloys, Wear, 249(8): 656–662, 2001, doi: 10.1016/s0043-1648(01)00687-1

Zeren M., Karakulak E., Influence of Ti addition on the microstructure and hardness properties of near-eutectic Al–Si alloys, Journal of Alloys and Compounds, 450(1–2): 255-259, 2008, doi: 10.1016/j.jallcom.2006.10.131

Gao T., Li P., Li Y., Liu X., Influence of Si and Ti contents on the microstructure, microhardness and performance of TiAlSi intermetallics in Al–Si–Ti alloys, Journal of Alloys and Compounds, 509(31): 8013–8017, 2011, doi: 10.1016/j.jallcom.2011.05.032.

Ghomashchi R., The evolution of AlTiSi intermetallic phases in Ti-added A356 Al–Si alloy, Journal of Alloys and Compounds, 537: 255–260, 2012, doi: 10.1016/j.jallcom.2012.04.087.

Kim J.H., Lee K.M., Lee H.D., Lee T.G., Park H.M., Park H.D., Effects of titanium and boron additions with mechanical stirring on mechanical properties in Al-Si alloys, Materials Transactions, 56(3): 450-453, 2015, doi: 10.2320/matertrans.l-m2014848.

Chintha A.R., Metallurgical aspects of steels designed to resist abrasion, and impact-abrasion wear, Materials Science and Technology, 35(10): 1133–1148, 2019, doi: 10.1080/02670836.2019.1615669.

Shivanath R., Sengupta P.K., Eyre T.S., Wear of aluminium-silicon alloys, The British Foundrymen, 70(12): 349–356, 1977.

Zum Gahr K.H., Microstructure and wear of materials, Ch. 6. Sliding wear, Tribology Series, 10: 351–495, 1987, doi: 10.1016/S0167-8922(08)70724-7.

Clarke J., Sarkar A.D., Topographical features observed in a scanning electron microscopy study of aluminium alloy surfaces in sliding wear, Wear, 69(1): 1–23, 1981, doi: 10.1016/0043-1648(81)90309-4.




DOI: 10.24423/EngTrans.1156.20201029

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