| 摘要 |
PROBLEM TO BE SOLVED: To provide a method of producing a rare earth bond magnet by sealing an alloy containing R, Fe, and B as fundamental components in a capsule and performing hot working, in which cracking occurring during cooling operation is prevented and the yield is improved. SOLUTION: An iron base metal in which no A3 transformation occurs is capsuled. Specifically, the iron base material is one of a metal material in which the carbon content is 0.12% by weight or less, 13 to 30 atomic % of Cr is included, and the balance is iron; a metal material in which the carbon content is 0.12% by weight or less, 0.2 to 3 atomic % of at least one kind of Al, Ti, V, Sn, W, and Mo is included, and the balance is iron; and a metal material in which the carbon content is 0.12% by weight or less, 2 to 5 atomic % of at least one kind of Si, Ge, and Ga is included, and the balance is iron. |
