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Advanced structural analysis of a laser additive manufactured Zr-based bulk metallic glass along the build height

Best, James P. and Nomoto, Keita and Yang, Fan and Li, Bosong and Stolpe, Moritz and Zeng, Luyang and Evenson, Zachary and Hugenschmidt, Christoph and Li, Xiaopeng and Ringer, Simon P. and Kruzic, J. J. (2022) Advanced structural analysis of a laser additive manufactured Zr-based bulk metallic glass along the build height. Journal of Materials Science, 57, pp. 9678-9692. Springer. doi: 10.1007/s10853-022-06991-6. ISSN 0022-2461.

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Official URL: https://link.springer.com/article/10.1007/s10853-022-06991-6

Abstract

Additive manufacturing of bulk metallic glasses (BMGs) has opened this material class to an exciting new range of potential applications, as bulk-scale, net-shaped amorphous components can be fabricated in a single step. However, there exists a critical need to understand the structural details of additive manufactured BMGs and how the glassy structure is linked to the mechanical properties. Here, we present a study of structure and property variations along the build height for a laser powder bed fusion (LPBF) processed Zr-based BMG with composition Zr59.3Cu28.8Nb1.5Al10.4 commercially termed AMZ4, using hardness testing, calorimetry, positron annihilation spectroscopy, synchrotron X-ray diffraction, and transmission electron microscopy. A lower hardness, more rejuvenated glassy structure was found at the bottom of the build compared to the middle region of the build, with the structure and properties of the top region between the two. Such differences could not be attributed to variability in chemical composition or crystallisation; rather, the softer bottom region was found to have a larger medium range order cluster size, attributed to heat dissipation into the build plate during processing, which gave faster cooling rates and less reheating compared to the steady-state middle of the build. However, at the top of the build less reheating occurs compared to the middle, leading to a somewhat softer and less relaxed state.

Item URL in elib:https://elib.dlr.de/189708/
Document Type:Article
Title:Advanced structural analysis of a laser additive manufactured Zr-based bulk metallic glass along the build height
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Best, James P.Max-Planck-Institut für Eisenforschung GmbHUNSPECIFIEDUNSPECIFIED
Nomoto, KeitaSchool of Mechanical and Manufacturing Engineering, University of New South Wales, Sydney, AustraliaUNSPECIFIEDUNSPECIFIED
Yang, FanUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Li, BosongSchool of Mechanical and Manufacturing Engineering, University of New South Wales, Sydney, AustraliaUNSPECIFIEDUNSPECIFIED
Stolpe, MoritzHeraeus Additive Manufacturing GmbH, Hanau, GermanyUNSPECIFIEDUNSPECIFIED
Zeng, LuyangAustralian Centre for Microscopy and Microanalysis, and School of Aerospace, Mechanical and Mechatronic Engineering, The University of SydneyUNSPECIFIEDUNSPECIFIED
Evenson, ZacharyUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Hugenschmidt, ChristophHeinz Maier-Leibniz Zentrum (MLZ), Technische Universität MünchenUNSPECIFIEDUNSPECIFIED
Li, XiaopengSchool of Mechanical and Manufacturing Engineering, University of New South Wales, Sydney, AustraliaUNSPECIFIEDUNSPECIFIED
Ringer, Simon P.Australian Centre for Microscopy and Microanalysis, and School of Aerospace, Mechanical and Mechatronic Engineering, The University of SydneyUNSPECIFIEDUNSPECIFIED
Kruzic, J. J.School of Mechanical and Manufacturing Engineering, University of New South Wales, Sydney, AustraliaUNSPECIFIEDUNSPECIFIED
Date:4 March 2022
Journal or Publication Title:Journal of Materials Science
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:57
DOI:10.1007/s10853-022-06991-6
Page Range:pp. 9678-9692
Publisher:Springer
Series Name:Metal Additive Manufacturing
ISSN:0022-2461
Status:Published
Keywords:Additive manufacturing; bulk metallic glasses; structure characterization
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Research under Space Conditions
DLR - Research area:Raumfahrt
DLR - Program:R FR - Research under Space Conditions
DLR - Research theme (Project):R - Material Design and New Materials
Location: Köln-Porz
Institutes and Institutions:Institute of Materials Physics in Space
Deposited By: Yang, Fan
Deposited On:07 Nov 2022 08:53
Last Modified:28 Feb 2023 06:53

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