The authors acknowledge Dr. Michael Oehring and Prof. Dr. Florian Pyczak for providing the γ-TiAl extruded material.
Investigation of In Situ and Conventional Post-Weld Heat Treatments on Dual-Laser-Beam-Welded γ-TiAl-Based Alloy†
Article first published online: 17 SEP 2012
Copyright © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Advanced Engineering Materials
Volume 14, Issue 10, pages 923–927, October 2012
How to Cite
Liu, J., Ventzke, V., Staron, P., Schell, N., Kashaev, N. and Huber, N. (2012), Investigation of In Situ and Conventional Post-Weld Heat Treatments on Dual-Laser-Beam-Welded γ-TiAl-Based Alloy. Adv. Eng. Mater., 14: 923–927. doi: 10.1002/adem.201200113
- Issue published online: 5 OCT 2012
- Article first published online: 17 SEP 2012
- Manuscript Accepted: 16 JUL 2012
- Manuscript Received: 20 MAR 2012
This paper describes a way to improve the microstructure and mechanical properties of welding seams by in situ and conventional post-weld heat treatments for laser beam welding of the Ti–45Al–5Nb–0.2C–0.2B alloy. The seams are crack-free with reduced longitudinal residual stress and higher elongation to fraction after post-weld heat treatment. The welding zone consists of α2 after welding, transforms to a massive γ during in situ post-weld heat treatment, and finally forms a convoluted microstructure after conventional heating. The phase composition across the welding zone is discussed.