Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7129598 | Optics & Laser Technology | 2018 | 7 Pages |
Abstract
In this article, Ti-6Al-4V powder alloy was directly deposited on Ti-6Al-4V substrate using laser cladding process. In this process, some key parameters such as laser power (P), laser scanning rate (V) and powder feeding rate (F) play important roles. Using linear regression analysis, this paper develops the empirical-statistical relation between these key parameters and geometrical characteristics of single clad tracks (i.e. clad height, clad width, penetration depth, wetting angle, and dilution) as a combined parameter (PαVβFγ). The results indicated that the clad width linearly depended on PVâ1/3 and powder feeding rate had no effect on it. The dilution controlled by a combined parameter as VFâ1/2 and laser power was a dispensable factor. However, laser power was the dominant factor for the clad height, penetration depth, and wetting angle so that they were proportional to PVâ1F1/4, PVFâ1/8, and P3/4Vâ1Fâ1/4, respectively. Based on the results of correlation coefficient (R > 0.9) and analysis of residuals, it was confirmed that these empirical-statistical relations were in good agreement with the measured values of single clad tracks. Finally, these relations led to the design of a processing map that can predict the geometrical characteristics of the single clad tracks based on the key parameters.
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Authors
Mohammad Nabhani, Reza Shoja Razavi, Masoud Barekat,