Microstructure and Texture Evolution of Magnesium alloy after Shear Assisted Processing and Extrusion (ShAPETM)

18th International Conference on Textures of Materials

材料科学;物理学

Jamalian, M.^1 ; Joshi, V.V.^2 ; Whalen, Scott^2 ; Lavender, Curt^2 ; Field, D.P.^1

School of Mechanical and Materials Engineering, Washington State University, Pullman, United States^1

Pacific Northwest National Laboratory, Richland, United States^2

关键词: Assisted processing;    Crystallographic textures;    Electron back scatter diffraction;    Microstructural information;    Severe Deformation;    Texture evolutions;    Through the wall;    Wall thickness;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/375/1/012007/pdf
DOI  :  10.1088/1757-899X/375/1/012007

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

Shear Assisted Processing and Extrusion (ShAPETM) is a novel procedure used for fabricating thin-walled magnesium tubing. The technique involves pressing a billet through a rotating sleeve, thus causing severe deformation in the metal as the tube forms. This study analyzes the microstructure and crystallographic texture of the alloy in three different states by using electron backscatter diffraction. Notable differences in grain size and texture were observed depending on the location examined within the extrusion. Wall thicknesses of 1.5 and 3.0 mm (0.06 and 0.12 in) were characterized showing that both the grain size and basal plane orientation changed significantly as a function of position through the wall thickness, with abrupt changes near the outside wall. This type of microstructural information can be used to tune the parameters of the forming process to obtain the desired properties.