Insensitivity on tensile properties of forged Mg-13Li-X alloy to hot-rolling deformation
(1.北京市北京航空航天大学材料科学与工程学院2.School of Materials Science and Engineering, Beijing University of Aeronautics & Astronautics, Beijing 100083, China3.Shougang Metallurgical Research Institute, Beijing 100088, China)
Abstract: In order to examine the dependences of tensile properties of a forged Mg-13Li-X alloy on hot-rolling deformation and the underlying mechanisms tensile tests, residual stress measurements and texture analyses were conducted in the present study. It is found that after a hot-rolling deformation of 50% at 200 ℃, no much changes in tensile properties, nature and magnitude of residual stresses, and texture type and intensity can be identified for the alloy investigated. The insensitivity of tensile properties of the Mg-Li-X alloy to hot-rolling deformation is attributed at least partially to the insensitivity of residual stress and texture to hot-rolling.
Key words: Mg-13Li-X alloy; residual stress; fracture observation; texture analysis