• Boyan Dochev Technical University of Sofia, Plovdiv Branch (BG)
  • Desislava Dimova Technical University of Sofia,, Branch Plovdiv (BG)
  • Ivan Panov Technical University of Sofia, Branch Plovdiv (BG)



alloying, aluminium-silicon alloy, dental cobalt-chromium-molybdenum alloy, hard-melting elements


A base aluminium-silicon alloy AlSi25Cu5Cr was used to investigate the possibility of alloying aluminium alloys with hard-to-melt elements. The alloying elements Co, Cr and Mo were introduced into the melt using metal powder from a hard-melting dental cobalt-chromium-molybdenum alloy. The metal powder was packed in aluminium foil and introduced into the melt of the studied alloy at a temperature of 810º C. After alloying and mechanical stirring of the melt, it stood for 30 min. at a temperature, raised to 850º C and experimental castings were cast from it. After spectral analysis, the degree of absorption of the alloying elements by the aluminium melt was determined. The structure and mechanical properties of the thus obtained alloy were investigated.

Supporting Agencies
The study was part of the „Young Researchers and Postdocs–2“National Scientific Programme and was funded by the Technical University of Sofia, Branch Plovdiv, Faculty of Mechanical Engineering


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Mahle GmbH „Piston materials. In: Pistons and engine testing“. ATZ/MTZ-Fachbuch. Vieweg+Teubner Verlag, Wiesbaden.2012

N. Raghukiran, R.Kumar, „Effect of scandium addition on the microstructure, mechanical and wear properties of the spray formed hypereutectic aluminum–silicon alloys“, Materials Science and Engineering: A, Volume 641, p. 138-147, 2015

P. Xing, B. Gao, Y. Zhuang, K. Liu, G. Tu, „On the modification of hypereutectic Al-Si alloys using rare earth Er“. Acta Metallurgica Sinica (English Letters), Vol. 23, Issue 5, p.327-333, 2010

M. Zuo, D. Zhao, X. Teng, H. Geng, Z. Zhang, „Effect of P and Sr complex modification on Si phase in hypereutectic Al–30Si alloys“. Materials & Design, Volume 47, May, p. 857-864, 2013

S. Miladinović, B. Stojanović, S. Gajević, A. Vencl, „Hypereutectic Aluminum Alloys and Composites: A Review“

K. Kamarska, „ Study of the corrosion behavior of aluminum-silicon alloy AlSi18Cu3CrMn in acidic media“, AIP Conference Proceedings 2449, 060018, September 2022,

K. Kamarska, „Corrosion of AlSi18Cu3CrMn aluminum alloy in a chloride-containing medium“, AIP Conference Proceedings 2449, 60019, September 2022,

R. Rana, R. Purohit, S. Das, „Reviews on the Influences of Alloying elements on the Microstructure and Mechanical Properties of Aluminum Alloys and Aluminum Alloy Composites“, International Journal of Scientific and Research Publications, Volume 2, Issue 6, 2012, ISSN 2250-3153

O. Joseph, P. Olubambi, O. Joseph, B. Edun, J. Okeniyi, O. Abioye, „Effects of Alloying on Aluminium-Silicon Alloys – A Review“, IOP Conference Series: Materials Science and Engineering, Volume 1107, 2021

E. Efzan, H. Kong, C. Kok, „Review: Effect of Alloying Element on Al-Si Alloys“, Advanced Materials Research, Volume 845, p. 355-359, 2013

T. Bogdanoff, A. Dahle, S. Seifeddine, „Effect of Co and Ni Addition on the Microstructure and Mechanical Properties at Room and Elevated Temperature of an Al–7%Si Alloy“, International Journal of Metalcasting, Volume 12, p.434–440, 2018

J. Yeh, S. Chang, Y. Hong, S. Chen, S. Lin, „Anomalous decrease in X-ray diffraction intensities of Cu–Ni–Al–Co–Cr–Fe–Si alloy systems with multi-principal elements“, Materials Chemistry and Physics, Volume 103, Issue 1, 15 May, p. 41-46, 2007

C. Nwambu, E. Nnuka, J. Odo, C. Nwoye, S.Nwakpa, „Effect of Molybdenum and Cobalt Addition on Structure and Mechanical Properties of Aluminium-12.5%Silicon Alloy“, International Journal of Engineering Science Invention, Volume 3 Issue 4, p.20-24, 2014

M. Sha, S. Wu, X. Wang, L. Wan, P. An, „Effects of cobalt content on microstructure and mechanical properties of hypereutectic Al–Si alloys“, Materials Science and Engineering: A, Volume 535, February, p. 258-263, 2012

M. Sha, S. Wu, L. Wan, „Materials Science and Engineering: A“, Volume 554, September, p. 142-148, 2012




How to Cite

B. Dochev, D. Dimova, and I. Panov, “INVESTIGATING THE POSSIBILITY OF ALLOYING AN ALLOY ALSI25CU5CR WITH CO, CR AND MO USING METAL POWDER”, ETR, vol. 3, pp. 79–82, Jan. 2024, doi: 10.17770/etr2023vol3.7180.