Abstract
Mechanisms taking place while hot rolling in vacuum of dissimilar materials joined in solid phase are described. It is shown that at joining of materials in solid phase redistribution of atoms from one material into another occurs on the interface of joining. On the base of calculation and experimental results it is concluded that the ultimate strength of the interface of joint is always higher than the ultimate strength of less durable material. Pair zirconium-stainless steel SS (Type AISI 321) and carbon steel (Type C22E) those are used in nuclear power are investigated.
Highlights
Problems of service life and of safe operation of constructions, machines and units of nuclear power stations pose the tasks of strength and reliability increase for units and structural elements encourage development of new materials-dissimilar metals bonded
Theoretical model for ultimate strength of interface of heterogeneous materials joining in solid phase is described in details in [7]
The ultimate strength of heterogeneous metals interface is considerably higher than the ultimate strength of hard material but is lower the ultimate strength of multilayer material of hard monometals
Summary
Problems of service life and of safe operation of constructions, machines and units of nuclear power stations pose the tasks of strength and reliability increase for units and structural elements encourage development of new materials-dissimilar metals bonded. Production of safe and long-lived composition materials for unconnected joints of structural elements produced of materials with different properties is very topical task. Together with fusion welding of materials, solid-state joining is important [2] method because it provides wide possibilities especially in specific conditions of the use. This method allows to produce [3] the necessary.
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