Influence of Heat Treatment on the Change of Al-Si Coating Properties at Ultra-high Strength Sheets

Abstract

Paper deals with the evaluation of protective coating surface layer Al-Si at boron steel 22MnB5. Parts from these steels are used at the car-body design. Such parts are produced by hot forming technology that means not only higher requirements on material but also on the surface layer. Coatings are used to protect surface against oxidation during heating and also support the own forming process inside the tools. In this paper is evaluated the protective layer change during heat treatment-heating in furnace (8, 12 and 16 min). Performed microscopic analysis of Al-Si surface layer proves the thermal regime influence on the change of coating properties.

Model solving of aluminium alloy solidification

“…Other publications that deal with the problem of properties of aluminum alloys by experimental or numerical solutions are: Influence of heat treatment on the change of properties of Al-Si coating in sheets with very high strength. [12], Analysis of Microstructure Changes for AlSi7Mg0.3 Alloy Caused by Modification [13], Monitoring the fatique crack on the test specimen during the cyclic loading [14], Effect of Wall Thickness on the Quality of Casts from Secondary Aluminium Alloy [15].…”