MnAl alloy, particles thereof, and method for production
AssigneeHöGanäS AB (Publ)
InventorsHailiang Fang, Martin Häggblad Sahlberg, Bjorn Skarman
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Abstract
An alloy represented by the formula (MnxAly)Cz, the alloy being aluminum (Al), manganese (Mn), and carbon (C), and optionally unavoidable impurities; wherein x=56.0 to 59.0 y=41.0 to 44.0 x+y=100, and z=1.5 to 2.4. The alloy is highly suitable for forming the ε and τ phase in high purity and high microstructural homogeneity. A method for processing an alloy of formula (Mnx′Aly′)Cz′, wherein x′=52.0 to 59.0, y′=41.0 to 48.0, x′+y′=100, and z′=0.1 to 3.0, the process including providing the raw materials of the alloy, melting the raw materials, and forming particles of the alloy by gas atomization of the molten alloy.
Claims12
An alloy having a content of τ phase of 80% or more, the alloy being represented by formula (I)
- (MnxAly)Cz (I)
- the alloy consisting of aluminum (Al), manganese (Mn), and carbon (C), and
- optionally unavoidable impurities;
- wherein:
- x=56.0 to 59.0
- y=41.0 to 44.0
- x+y=100, and
- z=1.5 to 2.4,
- wherein the ratio of x to z (x/z) is in the range of 27.5 to 30,
- wherein the alloy was produced from a process including milling a precursor alloy having a ε phase content of 75% by mass or more, at a temperature of −20° C. or below and, optionally, performing a heat treatment on particles of the precursor alloy at a temperature of 900 to 1000° C. for a duration of 0.5 to 20 minutes after the milling.
Dependencies are inferred from the claim text.