Next Article in Journal
The Influence of Aging in Solvents on Dental Cements Hardness and Diametral Tensile Strength
Next Article in Special Issue
Effect of Initial Powders on Properties of FeAlSi Intermetallics
Previous Article in Journal
Thickness-Dependence Electrical Characterization of the One-Dimensional van der Waals TaSe3 Crystal
Previous Article in Special Issue
Mechanism of the Intermediary Phase Formation in Ti-20 wt. % Al Mixture during Pressureless Reactive Sintering
Open AccessArticle

Structure and Properties of Fe–Al–Si Alloy Prepared by Mechanical Alloying

1
Department of Metals and Corrosion Engineering, University of Chemistry and Technology, Prague, Technická 5, Prague 6, 166 28 Prague, Czech Republic
2
Institute of Physics of the ASCR, v. v. i., Na Slovance 2, Prague 8, 182 21 Prague, Czech Republic
3
Department of Materials, Faculty of Nuclear Sciences and Physical Engineering, Czech Technical University in Prague, Trojanova 13, Prague 2, 120 00 Prague, Czech Republic
4
Czech Geological Survey, Geologická 6, Prague 5, 152 00 Prague, Czech Republic
*
Author to whom correspondence should be addressed.
Materials 2019, 12(15), 2463; https://doi.org/10.3390/ma12152463
Received: 3 July 2019 / Revised: 26 July 2019 / Accepted: 31 July 2019 / Published: 2 August 2019
(This article belongs to the Special Issue Advanced Powder Metallurgy Technologies)
Fe–Al–Si alloys have been previously reported as an interesting alternative to common high-temperature materials. This work aimed to improve the properties of FeAl20Si20 alloy (in wt.%) by the application of powder metallurgy process consisting of ultrahigh-energy mechanical alloying and spark plasma sintering. The material consisted of Fe3Si, FeSi, and Fe3Al2Si3 phases. It was found that the alloy exhibits an anomalous behaviour of yield strength and ultimate compressive strength around 500 °C, reaching approximately 1100 and 1500 MPa, respectively. The results also demonstrated exceptional wear resistance, oxidation resistance, and corrosion resistance in water-based electrolytes. The tested manufacturing process enabled the fracture toughness to be increased ca. 10 times compared to the cast alloy of the same composition. Due to its unique properties, the material could be applicable in the automotive industry for the manufacture of exhaust valves, for wear parts, and probably as a material for selected aggressive chemical environments. View Full-Text
Keywords: iron silicide; Fe–Al–Si alloy; mechanical alloying; spark plasma sintering; characterization iron silicide; Fe–Al–Si alloy; mechanical alloying; spark plasma sintering; characterization
Show Figures

Figure 1

MDPI and ACS Style

Novák, P.; Vanka, T.; Nová, K.; Stoulil, J.; Průša, F.; Kopeček, J.; Haušild, P.; Laufek, F. Structure and Properties of Fe–Al–Si Alloy Prepared by Mechanical Alloying. Materials 2019, 12, 2463.

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