| 摘要 |
PROBLEM TO BE SOLVED: To provide a bonding method by which in bonding a metal material to a hard material to compose a dissimilar material bonded body, thermal stress between the materials due to a difference in a thermal contraction quantity therebetween can be reduced as far as possible, and problems such as occurrence of deformation and cracking, and peeling of a bonded part are resolved, and a sound bonded part can be formed.SOLUTION: There is provided the method for bonding a metal material to a hard material, which includes, in bonding a metal material having characteristics to generate martensitic transformation to a hard material generating martensitic transformation, steps of: (a) selecting the metal material so that a temperature range of phase transformation of the metal material is set according to the temperature of phase transformation of the hard material; or (b)selecting the hard material so that a temperature range of phase transformation of the hard material is set according to the temperature of phase transformation of the metal material. |
