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通过对Ｗ６Ｍｏ５Ｃｒ４Ｖ２钢与４５＃ 钢的超塑性扩散连接接头的室温力学性能、接头界面组织变化分析、断口的微观和宏观形貌分析以及界面处碳化物扩散等测试分析，认为在足够的预压力和良好的压接表面状态下，可实现异种钢材的超塑性扩散连接。接头界面是由冶金结合区、机械结合区及微观空隙等组成的。
By analyzing the mechanical properties at room temperature, the microstructure and the microstructure of the interface, the microscopic and macroscopic morphologies of the fracture and the carbides diffusion at the interface of W6Mo5Cr4V2 steel and 45 # steel, it is considered that under the conditions of sufficient pre-pressure and Under the condition of good crimping surface, superplastic diffusion bonding of dissimilar steel can be realized. Joint interface is a combination of metallurgical area, mechanical bonding area and microscopic gaps and other components.