Influence of Mould Thickness on Microstructure, Hardness and Wear of AL-Cu Cast Alloys

Document Type : Original Article

Authors

1 Mechanical Technical Department, Technical Institute of Kirkuk, Northern Technical University, Iraq

2 Mechanical and Energy Engineering Techniques Department, Erbil Technical Engineering College, Erbil Polytechnic University, Erbil, Kurdistan Region, Iraq

3 Technical College of Kirkuk, Northern Technical University, Iraq

Abstract

Aluminium – copper alloys have a wide range of industrial applications especially in military vehicles, rocket fins and aerospace. Solidification plays a vital role in controlling, the mechanical and tribological properties, and influencing the microstructure of metallic alloys in general and aluminium alloys in particular. Therefore, the researchers have made many efforts to figure out the solidification behaviour of Al-Cu alloys. Despite all these endeavors, however, the behavior is not yet fully understood. This research aims to investigate the effect of cooling rate on the microstructure, mechanical and tribological properties of aluminium-copper cast alloys (Al-Cu alloys) under dry sliding conditions. Four cooling rates were achieved by using four various steel moulds made of different thicknesses and one of them was surrounded with green sand, to get a lower cooling rate, with the same respective mould hole geometries. The microstructure results showed that the grain size increases with decreasing the cooling rate. While the hardness increased largely due to the refinement of the microstructure. Finally, it was concluded that the wear rate increases with decreasing the cooling rate, and this due to the reduction in hardness.

Keywords

References

1.            Wierzbinska, M., Sieniawski, J. "Microstructural Changes of Al-Cu Alloys After Prolonged Annealing at Elevated Temperature." In: Recent Trends in Processing and Degradation of Aluminium Alloys., (2011), 155–174.
doi: 10.5772/22195.
2.            Rana, R.S., Purohit, R., Das, S. "Reviews on the Influences of Alloying elements on the Microstructure and Mechanical Properties of Aluminum Alloys and Aluminum Alloy Composites." Internation journal of scientific and research publications. Vol. 2, (2012), 1–7.
3.            Sahoo, A.K., Behera, A., Behera, S., Senapati, S. "Development of Al Alloy ( Al-Cu and Al-Cu-Tib2 ) and to Improve the Mechanical Properties of Al." International Research Journal of Modernization in Engineering Technology and Science, Vol. 3, (2021), 487–498.
4.            Amoorezaei, M., Gurevich, S., Provatas, N. "Spacing characterization in Al-Cu alloys directionally solidified under transient growth conditions." Acta Materialia, Vol. 58, (2010), 6115–6124.
  https://doi.org/10.1016/j.actamat.2010.07.029
5.            Li, M., Wang, H., Wei, Z., Zhu, Z. "Effect of returns on microstructure and mechanical properties of AL-Cu based alloys." China Foundry, Vol. 7, No. 1, (2010), 37–42.
doi:1672-6421(2010)01-037-06
6.            Aryshenskii, E., Hirsch, J., Yashin, V., Konovalov, S., Chitnaeva, E. "Study of the Recrystallization Behaviour of the Aluminium 1565ch Alloy During Hot Rolling of the As Cast Structures." Materials Research Express, Vol. 6, No. 7, (2019). https://doi.org/10.1088/2053-1591/ab13b6
7.            Xie, L., Wang, C., Wang, Y., Wu, G., Huang, X. "Grain Size Effect on the Mechanical Behavior of Metastable Fe-23Cr-8.5 Ni alloy." Metals, Vol. 9, No. 7, (2019). https://doi.org/10.3390/met9070734
8.            Xu, Z., Wang, S., Wang, H., Song, H., Li, S., Chen, X. "Effect of Cooling Rate on Microstructure and Properties of Twin-Roll Casting 6061 Aluminum Alloy Sheet." Metals, Vol. 10, No. 9, (2020), 1–11.
                https://doi.org/10.3390/met10091168
9.            Chausov, M., Pylypenko, A., Berezin, V., Volyanska, K., Maruschak, P., Hutsaylyuk, V., Markashova, L., Nedoseka, S., Menou, A. "Influence of Dynamic Non-Equilibrium Processes on Strength and Plasticity of Materials of Transportation Systems." Transport, Vol. 33, No. 1, (2018), 231–241. https://doi.org/10.3846/16484142.2017.1301549
10.          He, C., Yu, W., Li, Y., Wang, Z., Wu, D., Xu, G. "Relationship between Cooling Rate, Microstructure Evolution, and Performance Improvement of an Al-Cu Alloy Prepared using Different Methods." Materials Research Express, Vol.7, No. 11, (2020). https://doi.org/10.1088/2053-1591/abc4f9
11.          Aryshenskii, E., Hirsch, J., Yashin, V., Sergei, K., Kawalla, R. "Influence of Local Inhomogeneity of Thermomechanical Treatment Conditions on Microstructure Evolution in Aluminum Alloys." Journal of Materials Engineering and Performance, Vol. 27, No. 12, (2018), 6780–6799. https://doi.org/10.1007/s11665-018-3733-8
12.          Kordijazi, A., Weiss, D., Das, S., Behera, S., Roshan, H.M., Rohatgi, P. "Effect of Solidification Time on Microstructure, Wettability, and Corrosion Properties of A205-T7 Aluminum Alloys." International Journal of Metalcasting, Vol. 15, No. 1, (2021), 2–12. https://doi.org/10.1007/s40962-020-00457-8
13.          Padmanabhan, K.K., Prabhub, G. "Experimental Investigation by Cryogenic Treatment of Aluminium 6063 and 8011 and NiCoW Coating to Improve Hardness and Wear." International Journal of Engineering, Transactions C: Aspects, Vol. 29, No. 6, (2016). https://doi.org/10.5829/idosi.ije.2016.29.06c.12
14.          Dobrzański, L.A., Maniara, R., Krupiński, M., Sokolowski, J.H. "Microstructure and Mechanical Properties of AC AlSi9CuX Alloys." Journal of Achievements in Materials and Manufacturing Engineering, Vol. 24, No. 2, (2007), 51–54.  
15.          Talamantes-Silva, M.A., Rodríguez, A., Talamantes-Silva, J., Valtierra, S., Colás, R. "Characterization of an Al-Cu Cast Alloy." Materials Characterization. Vol. 59, No. 10, (2008), 1434–1439.
                https://doi.org/10.1016/j.matchar.2008.01.005
16.          Li, J., Bourgeois, L., Tsalanidis, A., Weyland, M., Medhekar, N. V., Bourgeois, L. "The Enhanced Theta-prime (θ′) Precipitation in an Al-Cu Alloy with Trace Au Additions." Acta Materialia, Vol. 125, 340–350 (2017). https://doi.org/10.1016/j.actamat.2016.12.012
17.          Zaid, A.I.O., Allawi, G.T.A., Al-Haj-Ali, A. "Effect of Vanadium Addition to Aluminum and Aluminum Grain Refined by Titanium on Their Chemical Corrosion Rate in Acidic Solution, Hcl, at Different Temperatures." Key Engineering Materials, Vol. 510–511, No. 1, (2012), 481–486. https://doi.org/10.4028/www.scientific.net/KEM.510-511.481
18.          Ebrahimi, M., Attarilar, S., Shaeri, M.H., Gode, C., Armoon, H., Djavanroodi, F. "An Investigation into the Effect of Alloying Elements on Corrosion Behavior of Severely Deformed Cu-Sn Alloys by Equal Channel Angular Pressing." Archives of Civil and Mechanical Engineering, Vol.19, No. 3, (2019), 842–850. https://doi.org/10.1016/j.acme.2019.03.009
19.          Hu, X., Ai, F., Yan, H. "Influences of Pouring Temperature and Cooling Rate on Microstructure and Mechanical Poperties of Casting Al-Si-Cu Aluminum Alloy." Acta Metallurgica Sinica (English Letters), Vol. 25, No. 4, (2012), 272–278. https://doi.org/10.11890/1006-7191-124-272
20.          Dobrzañski, L., Maniara, R., Sokolowski, J. "The Effect of Cooling Rate on Microstructure and Mechanical Properties of AC AlSi9Cu Alloy." Archives of Materials Science and Engineering, Vol. 28, No. 2, (2007), 105–112.
21.          Higgins, R. Engineering Metallurgy: Applied Physical Metallurgy. Printed in Great Britain, 1999.
22.          Jabur, A.S. "Preparation and Characterization of Cast Aluminum Matrix-SiC Particulate Composite." PhD Thesis, University of Technology-Iraq, (2000).
 
International Journal of Engineering
Volume 34, Issue 8
TRANSACTIONS B: Applications
August 2021
Pages 2021-2027

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