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Scanning Velocity Influence on the Evolving Properties of Laser Metal Deposited Ti-6 Al-4 V + Mo
| Content Provider | Semantic Scholar |
|---|---|
| Author | Reynolds, Christopher J. |
| Copyright Year | 2015 |
| Abstract | Ti-6Al-4V is a titanium alloy that accounts for about 80% of the titanium market. The Ti-64 alloy contains 6 wt% Aluminum and 4 wt% Vanadium, an almost equal ratio of α + β phases. Through the laser surface modification process known and Laser Metal Deposition this alloy offers the optimum combination of enhanced properties. This research focuses on the application of adding a combination of molybdenum (Mo) and Ti-64 powders to a Ti-64 substrate surface in order to improve the durability for various biomedical applications. Deposition of the powders was completed at the CSIR – National Laser Center, in Pretoria, South Africa, utilizing various scan speeds. In this study, the properties of the deposited material such as hardness and microstructure characterization were tested with varying scan speeds. With these characteristics established for each sample, the optimal scanning speed was determined to be between 1.1-1.7m/min for the production of a defect free deposition. The results of the hardness tests showed that the addition of molybdenum to Ti-64 increased the hardness of the deposited material compared to that of the substrate. This verifies that the addition of Mo to metals can affect the mechanical properties to better suit various applications. It was also determined that an increase in scan speed causes an increase in the hardness, due to less grain growth. The promising research recorded here has presented various options for further investigation. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | https://s3.amazonaws.com/msoe/files/resources/chris-reynolds-final-paper.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
