A comparative study of additive manufacturing techniques: Residual stress and microstructural analysis of CLAD and WAAM printed Ti–6Al–4V components. (5th January 2016)

• Record Type: Journal Article
• Authors: Szost, Blanka A.; Terzi, Sofiane; Martina, Filomeno; Boisselier, Didier; Prytuliak, Anastasiia; Pirling, Thilo; Hofmann, Michael; Jarvis, David J.
• Is Part Of: Materials & design. Volume 89(2016)
• Page Start: 559
• Page End: 567
• Publication Date: 2016-01-05
• Subjects: Residual stress -- 3D printing -- Titanium alloy -- Neutron diffraction -- Wire + Arc Additive Manufacturing -- Laser cladding; Materials -- Periodicals; Engineering design -- Periodicals; Matériaux -- Périodiques; Conception technique -- Périodiques; Electronic journals; 620.11
• DOI: 10.1016/j.matdes.2015.09.115
• Languages: English
• ISSNs: 0264-1275

Abstract

Abstract: Nowadays, there is a great manufacturing trend in producing higher quality net-shape components of challenging geometries. One of the major challenges faced by additive manufacturing (AM) is the residual stresses generated during AM part fabrication often leading to unacceptable distortions and degradation of mechanical properties. Therefore, gaining insight into residual strain/stress distribution is essential for ensuring acceptable quality and performance of high-tech AM parts. This research is aimed at comparing microstructure and residual stress built-up in Ti–6Al–4V AM components produced by Wire + Arc Additive Manufacturing (WAAM) and by laser cladding process (CLAD). Graphical abstract: Highlights: The highest residual stress values are in longitudinal (deposition) direction The maximum stress is observed in between baseplate and the deposited wall CLAD sample show lower residual stress than WAAM sample Both specimens exhibit columnar grains with finer wavy morphology in CLAD Compressive stress is observed in different regions depending on the process