Possibilities of reducing the degradation of molds for high-pressure of Al alloys

  • 1 Department of Technology, Materials and Computer Supported Production, Technical University of Košice, Slovakia


The paper focuses on the degradation of molds that are used for the technology of high-pressure casting of Al and its alloys. The method of high-pressure casting of aluminum products is one of the widely used production methods, which at the same time meets the requirements for precision and productivity in the production of cars and various mechanical parts. In the high-pressure casting process, the molds are exposed to various thermal and mechanical loads, where the molds and their shaped parts are degraded. The paper presents the results of research focused on the use of duplex PVD coatings to increase the life of shaped parts of molds for high-pressure casting of Al and its alloys.



  1. D. Abid, A. Ktari, D. Mellouli, N. Gafsi, N. Haddar: Failure analysis of shot-sleeves used in brass high pressure die-casting process, In: Engineering Failure Analysis, 2019, Volume 104, pp. 177-188
  2. V. Nunes, F.J. Silva, M.F. Andrade, R. Alexandre, A.P.M. Baptista: Increasing the lifespan of high-pressure die cast molds subjected to severe wear, In: Surface & Coatings Technology, 2017, Volume 332, pp. 319-331
  3. S. H. Kang, J.J. Han, W.T. Hwang, S.M. Lee, H.K. Kim: Failure analysis of die casting pins for an aluminum engine block, In: Engineering Failure Analysis, 2019, Volume 104, pp. 690-703
  4. D. Mellouli, N. Haddar, A. Koster, H.F. Ayedi: Thermal fatigue failure of brass die – casting dies, In: Engineering Failure Analysis, 2012, Volume 20, pp. 137-146
  5. J. Wang On the failure mechanism for high pressure die casting A390 hypereutectic alloy in low cycle and high cycle fatigue, In: Materials Science & Engineering A, 2018, Volume 723, pp. 48-55
  6. R. Ding Failure analysis of H13 steel die for high pressure die casting Al alloy, In. Engineering Failure Analysis, 2021, Volume 124, pp. 105330
  7. J. Lin Design methodology for optimized die coatings: The case for aluminum pressure die-casting, In: Surface & Coating Technology, 2006, Volume 201, pp. 2930-2941, Elsevier
  8. K. Bobzin, et. al: Analysis of CrN/AlN/Al2O3 and two industrially used coatings deposited on die castings cores after application in an aluminum die casting machine, In: Surface & Coating Technology, 2016, Volume 308, pp. 374-382, Elsevier
  9. B. Wang, Method to evaluate the adhesion behaviour of aluminum-based alloys on various materials and coatings for lube-free die casting, In: Journal of Materials Processing Technology 2016, Volume 237, pp. 386-393, Elsevier

Article full text

Download PDF