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The Strathprints institutional repository is a digital archive of University of Strathclyde research outputs. Strathprints provides access to thousands of Open Access research papers by University of Strathclyde researchers, including those from the School of Psychological Sciences & Health - but also papers by researchers based within the Faculties of Science, Engineering, Humanities & Social Sciences, and from the Strathclyde Business School.

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Study of the surface layer formed by the laser processing of Ti-6Al-4V alloy in a dilute nitrogen environment

Selamat, M.S. and Baker, T.N. and Watson, L.M. (2001) Study of the surface layer formed by the laser processing of Ti-6Al-4V alloy in a dilute nitrogen environment. Journal of Materials Processing Technology, 113 (1-3). pp. 509-515. ISSN 0924-0136

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Abstract

Optical microscopy, scanning electron microscopy (SEM), X-ray diffractometry (XRD), X-ray photoelectron spectroscopy (XPS), transmission electron microscopy (TEM) and a hardness tester were used to understand the microstructure and to characterise the phases formed in a Ti-6Al-4V alloy at different tracks and depths, produced by laser nitriding under a dilute nitrogen environment with a spinning beam. The results show that the solidified melt consists of α′-Ti and TiNx. Using XRD, x was determined to be 0.75 while from XPS, x lay in a range of 0.5-0.8. The melt zone showed a range of hardness of between 500 and 800 HV.