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Journal of Materials Engineering and Performance

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01-03-2011

Influence of Laser Power on the Hardening of Ti6Al4V Low-Pressure Steam Turbine Blade Material for Enhancing Water Droplet Erosion Resistance

Authors: B. S. Mann, Vivek Arya, B. K. Pant

Published in: Journal of Materials Engineering and Performance | Issue 2/2011

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Abstract

To overcome water droplet erosion of Ti6Al4V alloy blade material used in low-pressure steam turbine (LPST) of high-rating nuclear and super critical thermal power plants, high-power diode laser (HPDL) surface treatment at two temperatures corresponding to two different power levels was carried out. During incubation as well as under prolonged erosion testing, the HPDL surface treatment of this alloy has enhanced its resistance significantly. This is due to the formation of fine-grained martensitic (ά) phase due to rapid heating and cooling associated with laser treatment. The droplet erosion test results after HPDL surface treatment on this alloy, SEM, XRD analysis, and residual stresses developed due to HPDL surface treatment are given in this paper.

previous article Tensile Properties and Microstructures of Laser-Formed Ti-6Al-4V

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Title: Influence of Laser Power on the Hardening of Ti6Al4V Low-Pressure Steam Turbine Blade Material for Enhancing Water Droplet Erosion Resistance
Authors: B. S. Mann
Vivek Arya
B. K. Pant
Publication date: 01-03-2011
Publisher: Springer US
Published in: Journal of Materials Engineering and Performance / Issue 2/2011
Print ISSN: 1059-9495
Electronic ISSN: 1544-1024
DOI: https://doi.org/10.1007/s11665-010-9656-7

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