Process for producing Fe-Co based magnetic alloy having excellent mechanical properties
AssigneeHonda Giken Kogyo Kabushiki Kaisha
InventorsHitoshi Itami, Nagatsugu Mukaibo, Tetsuya Kondo
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Abstract
A process for prooducing an Fe—Co based magnetic alloy having not only good magnetic properties but also excellent mechanical characteristics is provided which includes a first step of heating an Fe—Co based magnetic alloy material having a Co content which is in a range of 30% by weight≦Co≦65% by weight to convert the metallographic structure thereof into a γ single-phase structure, a second step of gradually cooling the material to an a single-phase range at a cooling rate C1 set in a range of 20 K°/hr≦C1≦0.5 K°/sec, and a third step of subjecting the material to a magnetic softening treatment.
Claims10
A process for producing an Fe—Co based magnetic alloy having excellent mechanical characteristics, comprising the steps (a) heating an Fe—Co based magnetic alloy material having a Co content in a range of 30% by weight≦Co≦65% by weight to convert the metallographic structure thereof into a γ single-phase structure, (b) gradually cooling the material to an a single-phase range at a cooling rate C1 set in a range of 20 k°/hr≦C1≦0.5 k°/sec, and (c) subjecting the material to a magnetic softening treatment, wherein the steps (a) to (c) are carried out in the mentioned order.
Dependencies are inferred from the claim text.