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Nanosecond Laser Milling of the Amorphous Alloy Zr41.2Ti13.8Cu12.5Ni10Be22.5 / E.R. Williams, E.B. Brousseau, Nicholas Lavery, S. Mehraban, C.E. Hughes, Kenneth D.M. Harris

11th International Conference on Multi-Material Micro Manufacture (4M2016) co-organised with 10th International Workshop on Microfactories (IWMF2016), Pages: 199 - 202

Swansea University Author: Nicholas Lavery

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DOI (Published version): 10.3850/978-981-11-0749-8 699

Abstract

This paper reports complementary experimental and theoretical investigations focussed on the laser milling of theamorphous alloy Zr41.2Ti13.8Cu12.5Ni10Be22.5, also known as Vitreloy 1, in ambient air, using 220 ns pulses. Theconducted experiments showed that the formation of crystalline precipitates...

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Published in: 11th International Conference on Multi-Material Micro Manufacture (4M2016) co-organised with 10th International Workshop on Microfactories (IWMF2016)
Published: 2016
URI: https://cronfa.swan.ac.uk/Record/cronfa28723
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Abstract: This paper reports complementary experimental and theoretical investigations focussed on the laser milling of theamorphous alloy Zr41.2Ti13.8Cu12.5Ni10Be22.5, also known as Vitreloy 1, in ambient air, using 220 ns pulses. Theconducted experiments showed that the formation of crystalline precipitates required a relatively large overlapbetween pulses when machining with a fluence of 6 J/cm2 and a pulse repetition frequency of 250 KHz. The loss ofthe fully amorphous nature of this material could also be achieved for a substantially smaller pulse overlap andfrequency. In this case, the lower thermal load associated with the reduction in the value of these parameters wasbalanced by increasing the delivered fluence by one order of magnitude, i.e. 70 J/cm2. Using theoretical temperatureprofiles associated with the considered laser milling operations, it was suggested that different crystallisationphenomena could be at play between both levels of fluence values utilised.
College: College of Engineering
Start Page: 199
End Page: 202