Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1698530 | Procedia CIRP | 2016 | 4 Pages |
Abstract
SA508 Gr 3, a bainitic forging steel employed in the fabrication of nuclear pressure vessels has been characterised after dry-milling to investigate extent of machining abuse on the surface. A detailed study of the evolution of residual stresses, microstructure, micro-hardness and roughness in relation to different milling parameters is presented. A central composite orthogonal (CCO) design of experiments (DoE) was used to generate a statistic model of the milling process. Deformation of the sub-surface layer was assessed via SEM BSE imaging. The developed statistical model is discussed aiming to illustrate availability of different cost-effective manufacturing techniques meeting the high standards required by the industry.
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Authors
A. Maurotto, Y. Gu, D. Tsivoulas, M.G. Burke,