Issue |
MATEC Web of Conferences
Volume 14, 2014
EUROSUPERALLOYS 2014 – 2nd European Symposium on Superalloys and their Applications
|
|
---|---|---|
Article Number | 13003 | |
Number of page(s) | 6 | |
Section | Posters: Process Microstructure Interactions | |
DOI | https://doi.org/10.1051/matecconf/20141413003 | |
Published online | 29 August 2014 |
Weldability of HAYNES 282 superalloy after long-term thermal exposure
Haynes International, Inc., Kokomo, Indiana, USA
a Corresponding author: jcaron@haynesintl.com
HAYNES ® 282 ® alloy is a wrought gamma-prime (γ') strengthened Ni-base superalloy that was developed for high-temperature structural applications, especially those in aero- and land-based gas turbine engines. The 282 alloy exhibits excellent creep strength and thermal stability in the 649 to 927 ∘C temperature range, and was specifically designed for improved fabricability relative to other Ni-base superalloys. When welded in the annealed condition, 282 alloy exhibits excellent weldability for a γ'-strengthened alloy. To provide an estimate of its weldability and weld repairability after service exposure, welding experiments were conducted on 282 alloy after long-term thermal exposure (LTTE). Welds were successfully completed on the LTTE material and transverse weld tensile properties were determined. To evaluate susceptibility to heat-affected zone (HAZ) liquation cracking during welding, Gleeble ® hot-ductility tests were performed on the LTTE material. The experimental results were complemented by microstructure characterization and thermodynamic calculations. The capability of weld repair and rejuvenation of 282 alloy components in the LTTE condition was demonstrated.
© Owned by the authors, published by EDP Sciences, 2014
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.