Journal
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY
Volume 271, Issue -, Pages 93-100Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jmatprotec.2019.03.020
Keywords
Shape memory alloys; Characterization; Phase transformations; Welding; Superelasticity; Functional fatigue
Funding
- Fundacao para a Ciencia e a Tecnologia (FCT - MCTES) [UID/EMS/00667/2019]
- FEDER through the program COMPETE 2020
- FCT-Portuguese Foundation for Science and Technology [UID/CTM/50025/2013]
- National Natural Science Foundation of China [51775091]
- Science and Technology Planning Project of Sichuan Province [2018GZ0284]
- Fundação para a Ciência e a Tecnologia [UID/EMS/00667/2019] Funding Source: FCT
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Large diameter rods of Cu-Al-Mn shape memory alloy were gas tungsten arc welded. The microstructural evolution was studied by electron microscopy techniques and its impact on the mechanical and functional response of the welded joints was assessed. The fusion zone exhibited a mixture of alpha and beta phases, while the base material was composed only by the parent beta phase. The refined grain structure of the fusion zone increased the material ductility and can improve the functional fatigue resistance of the welded joint when compared to the original base material.
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