2022
DOI: 10.3390/ma15103574
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Effect of Al Additions and Cooling Rate on the Microstructure and Mechanical Properties of Austenite FeMnAlC Steels

Abstract: The precipitation behavior of κ-carbide and its effects on mechanical properties in Fe-30Mn-xAl-1C (x = 7–11%) steels under water quenching and furnace cooling are studied in the present paper. TEM, XRD, EPMA were employed to characterize the microstructure, and tensile test and the Charpy impact test were used to evaluate mechanical properties. The results show that the density decreases by 0.1 g/cm3 for every 1 wt.% of Al addition. The excellent mechanical properties of tensile strength of 880 MPa and impact… Show more

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Cited by 3 publications
(4 citation statements)
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“…Performed calculations of the phase composition in the system Fe- (20)(21)(22)(23)(24)(25)(26)(27)(28)(29)(30)Mn-(10-12.0)Al-1-2 C (wt%) indicate that in the considered range of concentrations, the appearance of undesirable phases during hardening is possible. Therefore, for such steels, it is crucial to ensure a stable composition and favorable solidification conditions to obtain a uniform structure: the cooling rate should be high but not cause cracks in the surface area.…”
Section: Discussionmentioning
confidence: 99%
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“…Performed calculations of the phase composition in the system Fe- (20)(21)(22)(23)(24)(25)(26)(27)(28)(29)(30)Mn-(10-12.0)Al-1-2 C (wt%) indicate that in the considered range of concentrations, the appearance of undesirable phases during hardening is possible. Therefore, for such steels, it is crucial to ensure a stable composition and favorable solidification conditions to obtain a uniform structure: the cooling rate should be high but not cause cracks in the surface area.…”
Section: Discussionmentioning
confidence: 99%
“…Such lightweight steels have up to a 17% less specific density and belong to the system Fe–Mn–Al (and/or Si)–C with high content of manganese (18–30 wt%), carbon (0.6–1.8 wt%), aluminum (up to 12 wt%), and/or silicon (up to 3 wt%). [ 28–30 ]…”
Section: State‐of‐the‐art – Lightweight Steel Compositions and Manufa...mentioning
confidence: 99%
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