铝-316L不锈钢双金属零件在核聚变领域具有重要的意义。在铝-316L不锈钢双金属零件的塑性成形过程中，易出现界面开裂或宏观分层。本项目选取典型的铝-316L不锈钢双金属试样，系统研究界面组织对塑性变形特征的影响机制。首先研究具有平直界面、小波状界面及大波状界面的双金属试样在不同应力状态下的界面变形、裂纹萌生及界面演化特征；其次，选取铝-316L不锈钢以及铝-铝两种体系作为研究对象，研究第二相对于铝-316L不锈钢双金属复合管的形变机理影响机制；另外，研究绝热剪切带对铝-316L不锈钢塑性失稳的影响规律。最后，采用内高压胀形及推弯工艺对铝-316L不锈钢双金属进行塑性成形制备双金属复合管件。本项目着重研究铝-316L不锈钢双金属塑性变形中的微观机理，为双金属零件的后续塑性成形提供理论支撑和工艺参数优化依据。

The Al-316LSS clad metal parts play very important roles in the field of nuclear fusion.However, the cracks or even fracture at the interface may appear during the plastic deformation. In this project, typical Al-316LSS clad metal is selected to systematically investigate the influence of interfacial structure on the characterization of plastic deformation. Firstly, different stress states are applied to the clad parts of flat, wavelet or large-wave interface to analyze the interfacial deformation, crack initiation and propagation of interfacial structure. Secondly, Al-316LSS and Al-Al clad metals are employed to examine the effect of the second phase on the deformation mechanism of Al-316SS clad metal. In addition, the effect of adiabatic shear bands on the plastic instability are investigated in the Al-316LSS system. Finally,the hydroforming and push bending method are used to fabricate Al-316LSSclad pipe-fittings.In general, this project mainly focuses on the micromechanism of plastic deformation of the Al-316LSS clad metal and could provide solid theoretical support and basis for their plastic forming process.