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Title: Building metallic glass structures on crystalline metal substrates by laser-foil-printing additive manufacturing

Journal Article · · Journal of Materials Processing Technology
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  1. Missouri Univ. of Science and Technology, Rolla, MO (United States)

In laser-foil-printing additive manufacturing, 3D metallic glass structures can be built by laser welding of amorphous foils, layer by layer, upon a crystalline metal substrate. Here, in this paper, weldability studies for laser welding of Zr52.5Ti5Al10Ni14.6Cu17.9 amorphous foils onto a Ti-6Al-4V (Ti 6-4) or Zr 702 substrate are conducted. After laser welding, the weldments are analyzed using X-ray diffractometer, optical microscope, scanning electron microscope equipped with energy dispersive spectroscopy and micro-hardness tester. The results show that Zr 702 is a suitable substrate for Zr-based metallic glass structure since crack-free weld joints can be obtained owing to the formation of ductile α-Zr, while Ti 6-4 is not an appropriate substrate since it has high cracking susceptibility due to the formation of a large amount of hard and brittle intermetallics near the foil-substrate interface. It was found that the mixing between melted substrate and foil is not uniform but exhibits a distinct “swirl” pattern. The swirl structure is more pronounced in Ti 6-4 than in Zr 702 substrate which may contribute to its high cracking susceptibility. The aforementioned mixing leads to partial crystallization of the first amorphous layer; however, fully amorphous is achieved in the additional welding layers.

Research Organization:
Univ. of Missouri, Columbia, MO (United States)
Sponsoring Organization:
USDOE Office of Fossil Energy (FE)
Grant/Contract Number:
FE0012272; 16002R
OSTI ID:
1538466
Alternate ID(s):
OSTI ID: 1414793
Journal Information:
Journal of Materials Processing Technology, Vol. 248, Issue C; ISSN 0924-0136
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 32 works
Citation information provided by
Web of Science

References (18)

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Dissimilar welding of Zr41Be23Ti14Cu12Ni10 bulk metallic glass and stainless steel journal December 2011
Structural bulk metallic glasses with different length-scale of constituent phases journal November 2002
Electron beam welding of Zr-based BMG/Ni joints: Effect of beam irradiation position on mechanical and microstructural properties journal October 2008
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Transport Phenomena and Keyhole Dynamics during Pulsed Laser Welding journal December 2005
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Laser welding of annealed Zr55Cu30Ni5Al10 bulk metallic glass journal March 2014
Friction joining of Ti40Zr25Ni3Cu12Be20 bulk metallic glass journal September 2012
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Phase evolution in Cu54Ni6Zr22Ti18 bulk metallic glass Nd:YAG laser weld journal October 2006
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3D printing of large, complex metallic glass structures journal March 2017
Combination of a Nd:YAG laser and a liquid cooling device to (Zr53Cu30Ni9Al8)Si0.5 bulk metallic glass welding journal November 2010
A Foil-Based Additive Manufacturing Technology for Metal Parts journal August 2016

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