异种材料焊接逐渐成为工业应用的重点，异种焊接工艺参数的选取原则倍受关注，提供一个准确可靠的焊 接参数选取原则愈发重要。 基于Onsager-Ziegler 最大熵产生原理(OZ-MEPP)及相关动力学规律，构建了异种摩擦焊稳 态一维最大熵产生解析模型，揭示了大变形区域温度场分布。 进一步引入金属沿飞边挤出的影响，扩展为稳态二维模 型，并结合金属塑性流动本构方程，建立了稳态二维最大熵产生定解模型。最终，基于异种界面焊合判据，构建了异种旋 转摩擦焊稳态热力耦合解析模型。该模型无需预设响应参数，经两种合金组配的旋转摩擦焊实验验证，能有效预测焊接 温度、轴向缩短率和黏塑性区宽度，计算值与实验值变化趋势相近且相对误差均在10%以内，显示出良好的准确性与可 靠性。

Dissimilar material welding has gradually become the focus of industrial applications, and the selection principle of dissimilar welding process parameters has been increasingly considered; thus, providing an accurate and reliable welding parameter selection principle is more important. On the basis of the Onsager-Ziegler maximum entropy generation principle (OZ-MEPP) and related dynamics principles, a steady-state one-dimensional maximum entropy generation analytical model for dissimilar friction welding is constructed, which reveals the distribution of the temperature during severe plastic deformation. The effect of metal extrusion along the flash is further introduced to extend the model to a steady-state two-dimensional model, and a steady-state two-dimensional maximum entropy generation analytical model is established by combining it with the constitutive equation of metal plastic flow. Finally, on the basis of the dissimilar interface welding criterion, a steady-state thermal collocation analytical model of dissimilar rotary friction welding (RFW) is constructed. The model does not need to preset the response parameters and can effectively predict the welding temperature, axial shortening rate and viscoplastic zone width after the experimental verification of the RFW of dissimilar collocation. The trend of the calculations is similar to that of the experiments, and the relative errors are within 10%, which indicates good accuracy and reliability.