Understanding on toughening mechanism of bioinspired bulk metallic glassy composites by thermal spray additive manufacturing. (1st March 2020)

• Record Type: Journal Article
• Authors: Zhang, Cheng; Wang, Wei; Xing, Wei; Liu, Lin
• Is Part Of: Scripta materialia. Number 177(2020)
• Page Start: 112
• Page End: 117
• Publication Date: 2020-03-01
• Subjects: Bulk metallic glasses composite -- Thermal spray additive manufacturing -- Interfaces -- Mechanical property -- Toughening mechanism; Materials -- Periodicals; Metallurgy -- Periodicals; Metalen; Legeringen; Materiaalkunde; Metals, metalworking and machinery industries; Metals; Electronic journals; 620.11
• DOI: 10.1016/j.scriptamat.2019.10.017
• Languages: English
• ISSNs: 1359-6462

Abstract

Abstract: Toughening mechanism of bioinspired bulk metallic glassy composites (BMGCs) reinforced with various volume fractions of ductile stainless-steel (SS) phase fabricated via newly developed thermal spray additive manufacturing was investigated. Microstructure characterizations and nanoindentation suggested a strong interface-bonding along with nanoscale compositional gradient formed between the metallic glass and SS phases. Finite element modelling and theoretical analysis revealed that the increase in toughness arose from the nacre-like soft/hard phase configuration, which exhibits the effective stress-shielding effect against crack propagation, thus mitigating stress concentration and blocking crack propagation. Graphic abstract: Image, graphical abstract