Microstructure, Mechanical Properties and Fracture Behavior of Micron-Sized TiB₂/AlZnMgCu(Sc,Zr) Composites Fabricated by Selective Laser Melting.

ABSTRACT: In this paper, micron-sized TiB₂/AlZnMgCu(Sc,Zr) composites were fabricated by selective laser melting (SLM) using directly mixed powder. Nearly fully dense (over 99.5%) and crack-free SLM-fabricated TiB₂/AlZnMgCu(Sc,Zr) composite samples were obtained and its microstructure and mechanical properties were investigated. It is found that the laser absorption rate of powder is improved by introducing micron-sizedTiB₂ particles, then the energy density required for SLM forming can be reduced, and the densification can finally be improved. Some crystalline TiB₂ formed a coherent relationship with the matrix, while some broken TiB₂ particles did not, however, MgZn₂ and Al₃(Sc,Zr) can perform as intermediate phases to co

SUBMITTER: Yin P 

PROVIDER: S-EPMC10003815 | biostudies-literature | 2023 Mar

REPOSITORIES: biostudies-literature