Basal texture formation behavior of M1 magnesium alloy during high-temperature compression deformation

Abstract

Understanding the formation behavior of basal texture is important for improving formability. Many researchers found that deformation condition was an important factor in order to texture control on AZ system magnesium alloy. In case of M1 magnesium alloy has been investigated in texture formation resulting from grain size manipulation by precipitation, but there seems no studies on the texture development during high temperature on M1 magnesium alloy by deformation condition. In this study, microstructure evolution and texture formation behavior is investigated under various deformation conditions in M1 magnesium alloy. In order to make the same initial conditions, M1 magnesium ingot was rolled at 673K with a rolling reduction of 30%. Uniaxial compression test specimens were machined in such a way that the compression plane was parallel to the rolling plane, and subsequently annealed at 823 K for 1h. Uniaxial compression tests were carried out at 673K and 723K under a strain rate of 5.0x10−2s−1up to a strain of -1.0. EBSD measurement was performed for observation of crystal orientation distribution. As a result, occurrence of the dynamic recrystallization was confirmed. The position of maximum axis density of the texture and its intensity were varied depending on deformation conditions.