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Structural periodicity in laser additive manufactured Zr-based bulk metallic glass

Best, James P. and Evenson, Zachary and Yang, Fan and Dippel, Ann-Christin and Stolpe, M and Gutowski, Olof and Hasib, M. Tarik and Li, Xiaopeng and Kruzic, J. J. (2019) Structural periodicity in laser additive manufactured Zr-based bulk metallic glass. Applied Physics Letters, 115 (3), 031902. American Institute of Physics (AIP). doi: 10.1063/1.5100050. ISSN 0003-6951.

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Official URL: https://aip.scitation.org/doi/10.1063/1.5100050

Abstract

Additive manufacturing of bulk metallic glasses (BMGs) allows for effective bypassing of critical casting thickness constraints for glassy alloys, opening up this exciting material class to new applications. An open question is how the laser processing of such materials affects the short-range structural order, a critical mediating parameter for glass deformation. Synchrotron X-ray microdiffraction was used to understand structural heterogeneity across the build-planes of a selective laser melted Zr-based BMG. While negligible macroscopic heterogeneity in the structure was observed over a 10 mm build height for the X-ray amorphous material, small periodic variations were observed on the order of 40–80 μm. This dimensional scale was rationalized as a consequence of melt-pool solidification from laser processing, which imparts a calculated local strain variation of ±0.1%. It is anticipated that this structural insight will help to rationalize microscale deformation effects from the periodic structural variation of selective laser melting produced BMGs.

Item URL in elib:https://elib.dlr.de/128605/
Document Type:Article
Title:Structural periodicity in laser additive manufactured Zr-based bulk metallic glass
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Best, James P.UNSPECIFIEDUNSPECIFIED
Evenson, Zacharyzachary.evenson (at) frm2.tum.deUNSPECIFIED
Yang, FanFan.Yang (at) dlr.deUNSPECIFIED
Dippel, Ann-ChristinUNSPECIFIEDUNSPECIFIED
Stolpe, MUNSPECIFIEDUNSPECIFIED
Gutowski, OlofUNSPECIFIEDUNSPECIFIED
Hasib, M. TarikUNSPECIFIEDUNSPECIFIED
Li, XiaopengUNSPECIFIEDUNSPECIFIED
Kruzic, J. J.UNSPECIFIEDUNSPECIFIED
Date:16 July 2019
Journal or Publication Title:Applied Physics Letters
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:115
DOI :10.1063/1.5100050
Page Range:031902
Publisher:American Institute of Physics (AIP)
ISSN:0003-6951
Status:Published
Keywords:bulk metallic glass, additive manufacturing, synchrotron X-ray diffraction, selective laser melting
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 > Scientific Experiments MP
Deposited By: Yang, Fan
Deposited On:26 Jul 2019 10:03
Last Modified:17 Jul 2020 03:00

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