Ph.D. Dissertation Defense (Supervisor: Prof. WU Shengchuan)Name: HU YananMajor: Vehicle EngineeringTitle: Fine equiaxed zone induced softening and failure mechanism of high strength aluminum alloy fusion weldsSupervisor: Prof. WU ShengchuanDate: November 17, 2021Time: 09:00Venue: Room 202, Red House, State Key Laboratory of Traction Power, Jiuli CampusDissertation CommitteeChair: Prof./Princip...