Improved microstructure and increased mechanical properties of additive manufacture produced TI-6AL-4V by interpass cold rolling
| dc.contributor.author | Martina, Filomeno | |
| dc.contributor.author | Williams, Stewart W. | |
| dc.contributor.author | Colegrove, Paul A. | |
| dc.date.accessioned | 2017-07-27T15:28:08Z | |
| dc.date.available | 2017-07-27T15:28:08Z | |
| dc.date.issued | 2013-08-31 | |
| dc.description.abstract | Distortion, residual stress and mechanical property anisotropy are current challenges in additive manufacturing (AM) of Ti-6Al-4V. High-pressure, interpass rolling was applied to linear AM parts and resulted in a change from large columnar prior β grains to a completely equiaxed microstructure with grains as small as 89 μm. Moreover, α laths thickness was also reduced to 0:62 μm. The change in material microstructure resulted in a substantial improvement of all mechanical properties tested, which were also totally isotropic. In rolled specimens, maximum measured strength and elongation were 1078MPa and 14% respectively, both superior to the wrought material. Distortion was reduced to less than half. Rolling proved to be a relatively easy method to overcome some of the critical issues which keep AM from full industrial implementation. | en_UK |
| dc.identifier.citation | Filomeno Martina, Stewart Williams and Paul Colegrove. Improved microstructure and increased mechanical properties of additive manufacture produced TI-6AL-4V by interpass cold rolling. 24th International Solid Freeform Fabrication Symposium, 12-14 August 2014, Austin TX, USA. | en_UK |
| dc.identifier.uri | https://dspace.lib.cranfield.ac.uk/handle/1826/12241 | |
| dc.language.iso | en | en_UK |
| dc.publisher | University of Texas | en_UK |
| dc.title | Improved microstructure and increased mechanical properties of additive manufacture produced TI-6AL-4V by interpass cold rolling | en_UK |
| dc.type | Conference paper | en_UK |