Materials Frontier No.129
Title: Constitutive Modelling of Secondary Twinning in Mg alloy AZ31 under Strain Path Changes
Speaker: Peidong Wu, Professor
Department of Mechanical Engineering, McMasterUniversity
Hamilton, Ontario L8S 4L7, Canada
Venue: Room.313, Material Building A
Inviter: Prof Yao ShENG
The recently developed Twinning and De-Twinning (TDT) model for polycrystalline materials with the Hexagonal Close Packed (HCP) crystallographic structure is modified to include effects of secondary twinning. This improved TDT model is then applied to magnesium alloy Mg-3 Al-1 Zn (AZ31B) sheet under strain path changes. It is demonstrated that the new model is able to capture key features associated with the secondary twinning observed experimentally.