| Title | Welding of IN792 DS superalloy by high energy density techniques |
|---|---|
| Publication Type | Articolo su Rivista peer-reviewed |
| Year of Publication | 2017 |
| Authors | Angella, G., Barbieri Giuseppe, Donnini R., Montanari R., and Varone A. |
| Journal | Materials Science Forum |
| Volume | 884 |
| Pagination | 166-177 |
| ISSN | 02555476 |
| Keywords | Directionally solidified, Electron beams, Heat affected zone, High energy densities, Lasers, Macrodefects, Microstructural changes, Microstructure, Molten zones, Process condition, Process parameters, Superalloys, Thick plate, Welding |
| Abstract | Laser (LBW) and Electron Beam (EBW) welding have been used to produce seams on 2 mm thick plates of directionally solidified (DS) IN792 superalloy. For each welding technique a grid of samples were prepared by varying the pass speed (v) and keeping constant the other process parameters. The experiments were carried out at room temperature and with pre-heating (PHT) at 200 °C and 300 °C to find the best process conditions. The microstructural changes in molten zone (MZ) and heat affected zone (HAZ) were investigated finding that EBW guarantee a better quality and efficiency of the process without any macro defects. About the microstructure, the amount of ordered γ’ phase in the MZ is similar (≈ 25 %) for both welding techniques and quite lower than the value (70 %) of the original alloy. © 2017 Trans Tech Publications, Switzerland. |
| Notes | cited By 0 |
| URL | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85011105107&doi=10.4028%2fwww.scientific.net%2fMSF.884.166&partnerID=40&md5=2f073cb19abab96f2e78fea5fae3c663 |
| DOI | 10.4028/www.scientific.net/MSF.884.166 |
| Citation Key | Angella2017166 |
