Texture evolution in a CrMnFeCoNi high-entropy alloy manufactured by laser powder bed fusion
Xingjia He, Hao Wang, Zhiguang Zhu, L. Z. Wang, J. Q. Liu, N. Haghdadi, Mui Ling Sharon Nai, J. Huang, Sophie Primig, Simon P. Ringer, Xiaozhou Liao
Abstract
Abstract Additive manufacturing (AM) techniques including laser powder bed fusion have been widely used to produce metallic components with microstructures and mechanical properties distinctly different from the conventionally manufactured counterparts. Understanding how AM parameters affect the evolution of microstructure, including texture, of these AM metallic components is critical for appropriate manipulation of their processing and therefore their mechanical properties. Here we conducted a systematic investigation of texture evolution of a face-centred cubic CrMnFeCoNi high-entropy alloy cuboid fabricated using laser powder bed fusion. Our results showed that the texture evolutions along the build direction were different between the corner and central parts of the sample. Detailed analysis suggested that the texture evolution is closely related to local thermal gradient, which is a property that can be manipulated through changing AM parameters. The different textures lead to the significant variations of mechanical properties within the sample.