Effect of Inoculation on the Mechanical Properties of AZ91

• Published in: Archives of foundry engineering 2023-01, Vol.23 (2), p.15-20
• Main Authors: Rapiejko, C, Mikusek, D, Kubiak, K, Pacyniak, T
• Format: Article
• Language: English
• Subjects: Abrasion resistant alloys; Abrasive wear; Adhesive wear; Aluminum base alloys; Brinell hardness; Diamond pyramid hardness; dta process; Elongation; emgesal® flux 5; magnesium alloys; Magnesium base alloys; Mechanical properties; metallography; Microstructure; Optical microscopes; Optical properties; solidification process; Tensile strength; Wear resistance
• ISSN: 1897-3310; 2299-2944
• DOI: 10.24425/afe.2023.144290

The effect of Ca element on the microstructure evolution of the AZ91 magnesium alloy was investigated in this research. The magne-sium-aluminium alloy AZ91 was inoculated with the Emgesal® Flux 5 to refine its microstructure and also improve its microstructure. Six different concentrations of the Emgesal® Flux 5 content were tested, ranging from 0.1 to 0.6% wt., and compared to the baseline of the AZ91 alloy without inoculation. Melted metal was poured into a preheated metallic mould. Samples to test were achieved after turning treatment. Formed microstructure was assessed using an optical microscope. The microstructure was refined for every tested samples. Me-chanical properties such as tensile strength, elongation, Brinell hardness, Vickers microhardness, abrasion resistance and adhesive resistance were tested on the inoculated samples and compared to the non-inoculated AZ91. Introducing an Emgesal®Flux 5 inoculant caused a change in the tensile strength, elongation, Brinell hard-ness, Vickers microhardness, abrasive wear resistance as well as adhesive wear resistance in each examined concentration.