Abstract
The bonding strength of cladding is the key to the normal use of multilayer metal hot forging die. This paper presents a method of multilayer metal specimens prepared by PTAW. The specimens are selected H13 steel as the substrate, M2 steel as the transition layer, Ni60A alloy as the high temperature cladding, and the high temperature tensile test is performed on the Gleeble 3500 machine. The research results show that the substrate and cladding have good metallurgical bonding and the cladding hardness is higher than the substrate. Compared with H13 specimens, tensile strength of cladding metal specimens increase, elongation and yield strength decrease. All tensile fractures appeared on the H13 substrate during the experiment. It indicates that the cladding strength and bonding strength are higher than the substrate and the high temperature strength of cladding metal hot forging die is overall superior to H13 hot forging die.
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