Journal
ACTA MATERIALIA
Volume 61, Issue 12, Pages 4414-4428Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.actamat.2013.04.011
Keywords
Metallic glass; Structural relaxation; Sintering; Simulation; Interface
Funding
- US Army Research Office [ARO W911NF-10-1-0512]
- Materials Design Institute
- LANL/UC Davis Education Research Collaboration, Los Alamos National Laboratory (LANS) [75782-001-09]
- UC Laboratory Fees Research Program Contingency Funds
Ask authors/readers for more resources
In this study a gas atomized Mg65Cu25Gd10 amorphous powder was mechanically milled and consolidated by spark plasma sintering (SPS) at a high pressure (500 MPa) at different temperatures (443, 433, and 423 K) to provide an insight into the consolidation and mechanical behavior of Mg-based metallic glasses. Microstructural evolution in the vicinity of the interfaces of SPSed Mg-Cu-Gd BMG powders was characterized using scanning and transmission electron microscopy, and the associated amorphous phase transformation and thermal stability were analyzed using X-ray diffraction and differential scanning calorimetry. The results show that interfacial bonding between amorphous particles was enhanced by the disruption of surface oxides as well as by structural relaxation of the milled powder and the presence of high pressure during SPS. A finite element method with COMSOL software was also applied to investigate and explain the powder packing density, localized heating, and temperature distribution during SPS. (C) 2013 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available