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根据位错理论、能量守恒原理及量纲一致性，推导出了金属材料在持续动态再结晶过程中四个最主要热变形参数σ、ε·、ｄｓ、Ｔ 之间的物理关系式。它适用于一般热变形过程及超塑性变形过程，使得热加工过程中几个常用的经验公式从理论上实现了归一化。在此基础上，通过测量ＧＨ２１３２ 材料连续驱动摩擦焊接过程中的各个热变形参量，建立了ＧＨ２１３２ 合金材料在准稳定摩擦阶段焊合区金属的流动方程。结果表明焊合区金属在该阶段应力应变敏感性指数大于０ ．５ ，即处于超塑性流动状态，从而验证了焊合区金属的力学模型，为摩擦焊接基础研究及数值模拟提供了理论依据。
According to dislocation theory, energy conservation principle and dimensional consistency, the physical relationship between the four most important thermal deformation parameters σ, ε ·, ds and T during the continuous dynamic recrystallization of metallic materials is deduced. It is suitable for the general thermal deformation process and the superplastic deformation process, making the thermal process several commonly used empirical formula to achieve the normalization of the theory. On this basis, by measuring the thermal deformation parameters of GH2132 continuous-drive friction welding process, the flow equation of GH2132 alloy is established in the welding zone of quasi-stationary friction stage. The results show that the stress-strain sensitivity index of the metal in the weld zone is greater than 0 at this stage. 5, which is in the state of superplastic flow, so as to verify the mechanical model of the weld zone metal, which provides a theoretical basis for the basic research and numerical simulation of friction welding.