采用不同工艺方案进行了大面积钛/钢复合板的爆炸焊接试验。对制备的Gr1/Gr70爆炸复合材料结合界面的微观组织特征和力学性能进行了分析,结果表明采用分段装药工艺所制备的钛/钢复合板界面无分层、夹杂等缺陷,力学性能符合ASTM B 898-2...采用不同工艺方案进行了大面积钛/钢复合板的爆炸焊接试验。对制备的Gr1/Gr70爆炸复合材料结合界面的微观组织特征和力学性能进行了分析,结果表明采用分段装药工艺所制备的钛/钢复合板界面无分层、夹杂等缺陷,力学性能符合ASTM B 898-2005标准,能够满足装备使用需求。展开更多
The deformation characteristics of a friction stir welded thin sheet aluminum alloy joint were analyzed via numerical simulations.The simulated results were compared with the experimental results obtained for the defo...The deformation characteristics of a friction stir welded thin sheet aluminum alloy joint were analyzed via numerical simulations.The simulated results were compared with the experimental results obtained for the deformation of actual welded joints.The results revealed that the deformation of the joint was described by an asymmetric distribution with a large deformation region occurring mainly in the advancing side.This asymmetric deformation was mainly caused by the direct mechanical force applied by the welding tool to the workpiece.Furthermore,the deformation characteristics of the fixed points on both sides of the weld revealed that the deformation of the retreating side fluctuated significantly during the welding process.That is,the retreating side exhibited less welding stability than the advancing side.The stress distribution of the welded joint showed that a high stress region was formed at the end of the weld.In addition,the final stress distribution of the welded joint resulted mainly from the shear stress in the x-y direction.展开更多
文摘The deformation characteristics of a friction stir welded thin sheet aluminum alloy joint were analyzed via numerical simulations.The simulated results were compared with the experimental results obtained for the deformation of actual welded joints.The results revealed that the deformation of the joint was described by an asymmetric distribution with a large deformation region occurring mainly in the advancing side.This asymmetric deformation was mainly caused by the direct mechanical force applied by the welding tool to the workpiece.Furthermore,the deformation characteristics of the fixed points on both sides of the weld revealed that the deformation of the retreating side fluctuated significantly during the welding process.That is,the retreating side exhibited less welding stability than the advancing side.The stress distribution of the welded joint showed that a high stress region was formed at the end of the weld.In addition,the final stress distribution of the welded joint resulted mainly from the shear stress in the x-y direction.
