Picture of DNA strand

Pioneering chemical biology & medicinal chemistry through Open Access research...

Strathprints makes available scholarly Open Access content by researchers in the Department of Pure & Applied Chemistry, based within the Faculty of Science.

Research here spans a wide range of topics from analytical chemistry to materials science, and from biological chemistry to theoretical chemistry. The specific work in chemical biology and medicinal chemistry, as an example, encompasses pioneering techniques in synthesis, bioinformatics, nucleic acid chemistry, amino acid chemistry, heterocyclic chemistry, biophysical chemistry and NMR spectroscopy.

Explore the Open Access research of the Department of Pure & Applied Chemistry. Or explore all of Strathclyde's Open Access research...

Surface engineering of Ti-6Al-4V by nitriding and powder alloying using a CW CO2 laser

Baker, T.N. and Selamat, M.S. (2008) Surface engineering of Ti-6Al-4V by nitriding and powder alloying using a CW CO2 laser. Materials Science and Technology, 24 (2). pp. 189-200. ISSN 0267-0836

[img]
Preview
Text (strathprints005773)
strathprints005773.pdf
Accepted Author Manuscript

Download (2MB) | Preview

Abstract

A comparison has been made of the laser processing of Ti-6Al-4V (IMI-318) alloy by (a) nitriding under a dilute atmosphere, (b) preplaced 6 µm SiC powder and (c) a combination of (a) and (b). At least six laser tracks were overlapped. Microhardness maps allowed details of the variation in hardness with both melt depth and track number to be determined. The microstructure was characterised and related to the processing parameters, melt track dimensions, hardness and roughness data. It was found that the preheat generated due to the overlapping, influenced the individual track dimensions, microstructure and properties, which were also affected by the laser energy density and the nitrogen concentration in the nitriding atmosphere used in processing. Process (b) was shown to produce the smoothest surfaces, with Ra values <2μm, whilst (c) gave the highest Ra, value, 8.6 μm. These results are considered together with a wide range of data in the literature on laser processed Ti-6Al-4V.