MnAl alloy, particles thereof, and method for production
AssigneeHöGanäS AB (Publ)
InventorsHailiang Fang, Martin Häggblad Sahlberg, Björn Skårman
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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.
Claims20
A method for producing or treating an alloy having a composition of formula (II)
- (Mnx′Aly′)Cz′ (II)
- wherein
- x′=52.0 to 59.0
- y′=41.0 to 48.0
- x′+y′=100, and
- z′=0.1 to 3.0
- wherein the ratio of x′ to z′ (x′/z′) is in the range of 26 to 30,
- the alloy consisting of Mn, Al, C, and optionally unavoidable impurities, the process comprising:
- a. optionally, providing the raw materials of the alloy, melting the raw materials, and forming particles of the alloy by gas atomization of the molten alloy;
- b. optionally, performing a heat treatment on the alloy at 900-1200° C.;
- c. milling the alloy represented by formula (II) at a temperature of −20° C. or below-;
- and
- d. performing a heat treatment on particles of the alloy represented by formula (II) at a temperature of 900 to 1000° C. for a time of 0.5 to 20 minutes,
- wherein the milling c. is performed prior to the heat treatment d.
Dependencies are inferred from the claim text.