Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1614005 | Journal of Alloys and Compounds | 2013 | 11 Pages |
Abstract
A multiphysics based computational model was developed to predict the dilution of molybdenum (Mo) on an aluminum (Al) substrate during the laser surface alloying process. The influence of laser surface alloying processing parameters such as input energy, scanning speed, and overlapping ratio on dilution of Mo in Al was explored via computational model. The computational model, closely predicts the melt pool geometry (width and depth) that subsequently helps in estimating dilution. It was observed that the dilution increases with the increase in laser power, while it decreases with the increase in scanning speed. The phase and microstructural analyses revealed the existence of Al5Mo intermetallic for most of the laser surface alloying processing conditions. However, at higher (3.18Â ÃÂ 107Â J/m2) and lower (1.91Â ÃÂ 107Â J/m2) laser energy densities, the Al8Mo3 intermetallic was also evolved. These experimental observations validate the model's predictions and points to its reliability in predicting the expected intermetallics in Al-Mo system for various laser surfacing alloying processing conditions.
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
Hitesh D. Vora, Ravi Shanker Rajamure, Santhanakrishnan Soundarapandian, S.G. Srinivasan, Narendra B. Dahotre,