Iron alloy, iron-alloy member, and process for manufacturing the same
First Claim
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1. An iron alloy being characterized in that:
- it consists of aluminum (Al) in an amount of from 3 to 5.5% by mass (hereinafter being simply referred to as “
%”
);
manganese (Mn) in an amount from 0.2 to 6%;
chromium (Cr) in an amount of from 1 to 8%; and
the balance being iron (Fe), and inevitable impurities;
when the entirety is taken as 100%; and
it exhibits a good damping property, or a soft magnetic property.
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Abstract
An iron alloy according to the present invention comprises: Al in an amount of from 3 to 5.5%; Mn in an amount from 0.2 to 6%; and the balance being iron (Fe), and inevitable impurities and/or a modifying element; when the entirety is taken as 100%. Since a high damping factor is obtainable at a low-strain amplitude, this iron alloy demonstrates a stable damping property even in a high-temperature region. Moreover, since the alloying elements are Al and Mn alone, and since their contents are less, the iron alloy according to the present invention is low in cost.
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6 Claims
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1. An iron alloy being characterized in that:
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it consists of aluminum (Al) in an amount of from 3 to 5.5% by mass (hereinafter being simply referred to as “
%”
);manganese (Mn) in an amount from 0.2 to 6%; chromium (Cr) in an amount of from 1 to 8%; and the balance being iron (Fe), and inevitable impurities; when the entirety is taken as 100%; and it exhibits a good damping property, or a soft magnetic property. - View Dependent Claims (2, 3)
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4. A process for manufacturing iron-alloy member being characterized in that it is equipped with:
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a hot working step of performing plastic processing onto an iron-alloy workpiece, which consists of;
aluminum (Al) in an amount of from 3 to 5.5%;
manganese (Mn) in an amount from 0.2 to 6%;
chromium (Cr) in an amount of from 1 to 8%; and
the balance being iron (Fe), and inevitable impurities;
when the entirety is taken as 100%, at a hot working temperature that is equal to or higher than a recrystallization temperature of the iron-alloy workpiece; andan annealing step of heating the iron-alloy workpiece that is after being subjected to the hot working step to an annealing temperature that is higher than or equal to said recrystallization temperature, and thereafter cooling it gradually; wherein an iron-alloy member that is made by forming said iron-alloy workpiece is obtainable. - View Dependent Claims (5, 6)
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Specification