Next Article in Journal
Properties of Fourier Syntheses and New Syntheses
Previous Article in Journal
Non-Covalent Interactions in Coordination and Organometallic Chemistry
Previous Article in Special Issue
Microstructure and Texture Evolution during Twin-Roll Casting and Annealing of a Mg–6.8Y2.5Zn–0.4Zr Alloy (WZ73)
Open AccessArticle

Effect of Modification on Microstructure and Properties of AZ91 Magnesium Alloy

1
Department of Advanced Materials and Technologies, Silesian University of Technology, Krasińskiego 8, 40-019 Katowice, Poland
2
ZM “WSK Rzeszów” Sp. z o.o., 35-001 Rzeszów, Poland
*
Author to whom correspondence should be addressed.
Crystals 2020, 10(6), 536; https://doi.org/10.3390/cryst10060536
Received: 29 April 2020 / Revised: 19 June 2020 / Accepted: 22 June 2020 / Published: 24 June 2020
Refinement of α-Mg solid solution grains has a significant influence on the improvement of mechanical properties of cast magnesium alloys. In the article, the effects of three modifiers on microstructure and properties of AZ91 magnesium alloy casted to a sand mould were described. Overheating, hexachloroethane and wax-CaF2-carbon powder were applied. The research procedure comprised microstructure analysis by means of light microscopy, scanning electron microscopy and quantitative analysis with AnalySIS Pro® software and mechanical properties’ investigation. The microstructure of AZ91 alloy in the as-cast condition consists of α-Mg solid solution with precipitates of Mg17Al12, Mg2Si and Al8Mn5 phases. It was reported that all applied modifiers cause refinement of α-Mg solid solution grains and a decrease of the volume fraction of α-Mg+Mg17Al12 compound discontinuous precipitates. The best results were obtained in the case of wax-CaF2-carbon powder. View Full-Text
Keywords: grain refinement; AZ91; overheating; hexachloroethane; wax-CaF2-carbon; microstructure; heat treatment; mechanical properties grain refinement; AZ91; overheating; hexachloroethane; wax-CaF2-carbon; microstructure; heat treatment; mechanical properties
Show Figures

Figure 1

MDPI and ACS Style

Kiełbus, A.; Jarosz, R.; Gryc, A. Effect of Modification on Microstructure and Properties of AZ91 Magnesium Alloy. Crystals 2020, 10, 536.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Search more from Scilit
 
Search
Back to TopTop