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Cluster-strengthened Nb-microalloyed strip cast steels are of interest as clustering during aging leads to an enhancement in strength without compromising ductility, resulting in desirable mechanical properties. However, the precise strengthening mechanism is not well understood. Using in situ heating transmission electron microscopy, clustering was found to impede the movement of dislocations during aging. The attractive combination of ductility and strength was attributed to the effects of recovery and the restricted movement of dislocations through clustering. 2013 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
author list (cited authors)
Shrestha, S. L., Xie, K. Y., Ringer, S. P., Carpenter, K. R., Smith, D. R., Killmore, C. R., & Cairney, J. M.