| 摘要 |
PROBLEM TO BE SOLVED: To produce a heat resistant material having high strength at higher temperature compared to the case of a material used as the conventional heat resistant material and moreover having toughness higher than that of ceramics. SOLUTION: This Cr base heat resistant material is obtained by melting and solidifying a raw material mixture prepared in such a manner that B and Re are added to Cr, and the composition after the melting and solidifying is controlled to the one of 5 to 30 mol% B, 5 to 35 mol% Re, and the balance Cu and has a composite structure of a Cr phase in which Re is entered into solid solution and a Cr2B phase in which Re is entered into solid solution.
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