Structural peculiarities of Pd-Cu-Ni-P and Pt-Cu-Ni-P metallic glasses as a reason for their significantly different room-temperature plasticity. (1st July 2023)

• Record Type: Journal Article
• Authors: Louzguine-Luzgin, D.V.; Zanaeva, E.N.; Pratama, F.R.; Wada, T.; Ito, S.
• Is Part Of: Scripta materialia. Number 231(2023)
• Publication Date: 2023-07-01
• Subjects: Metallic glass -- Nanocrystals -- Transmission electron microscopy -- Atomic mapping; Materials -- Periodicals; Metallurgy -- Periodicals; Metalen; Legeringen; Materiaalkunde; Metals, metalworking and machinery industries; Metals; Electronic journals; 620.11
• DOI: 10.1016/j.scriptamat.2023.115468
• Languages: English
• ISSNs: 1359-6462

Abstract

Abstract: Structural features of the Pd42.5 Cu30 Ni7.5 P20 and Pt42.5 Cu27 Ni9.5 P21 metallic glasses are studied in the present work by high-resolution transmission electron microscopy. The results indicate that Pd42.5 Cu30 Ni7.5 P20 is a true bulk glass-former containing no crystalline particles/nuclei, while Pt42.5 Cu27 Ni9.5 P21 is a crystal growth-controlled type bulk glass-former which contains nanoparticles of about 1 nm size with a different chemical composition. These structural differences are manifested in room-temperature mechanical properties. Thermodynamic calculations are also used to support the observed features. Graphical abstract: Image, graphical abstract