Abstract
Electron beam welding (EBW) of titanium alloy was carried out by simulating the constraint conditions in actual welding. The fracture toughness of welded joints was studied. It is found that the fracture toughness decreases a lot, only 70% of the fracture toughness of base metal. The fracture surface was mainly ductile fracture mechanism with a large number of dimples by SEM. It was found that the crack propagation path was straight and mixed mode of intergranular and transgranular fracture by OM. OM and TEM observations show that the weld is mainly composed of fine and disordered acicular martensite with a large number of dislocations and twins. The grain size of constrained weld is finer and more disorderly than that of non-constrained weld, and there is no obvious grain orientation observed by EBSD. The crack propagation behavior of constrained weld was analyzed by the model.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
