Journal
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
Volume 46A, Issue 12, Pages 6103-6118Publisher
SPRINGER
DOI: 10.1007/s11661-015-3172-1
Keywords
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Funding
- Engineering and Physical Sciences Research Council [EP/K029010/1]
- Airbus Group Innovations
- EPSRC [EP/K029010/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/K029010/1] Funding Source: researchfish
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Mechanical property anisotropy is one of the issues that are limiting the industrial adoption of additive manufacturing (AM) Ti-6Al-4V components. To improve the deposits' microstructure, the effect of high-pressure interpass rolling was evaluated, and a flat and a profiled roller were compared. The microstructure was changed from large columnar prior beta grains that traversed the component to equiaxed grains that were between 56 and 139 mu m in size. The repetitive variation in Widmanstatten alpha lamellae size was retained; however, with rolling, the overall size was reduced. A ''fundamental study'' was used to gain insight into the microstructural changes that occurred due to the combination of deformation and deposition. High-pressure interpass rolling can overcome many of the shortcomings of AM, potentially aiding industrial implementation of the process. (C) The Author(s) 2015. This article is published with open access at Springerlink.com
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