X-ray micro-tomography revealed not only the true three-dimensional (3-D) distribution, interconnectivity, and morphology of coarse sigma precipitates in an AL-6XN superaustenitic stainless steel, but also the presence of an internal void network associated with these precipitates. The voids were present within the bulk of the undeformed material, indicating that they formed during alloy fabrication. The presence of these voids in association with the brittle sigma particles has important implications for the mechanical behavior of these alloys.
|Journal||Metallurgical and Materials Transactions A - Physical Metallurgy and Materials Science|
|Publication status||Published - 2007|