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- W4381187780 abstract "CoCrMo (CCM) alloys fabricated by laser powder bed fusion (LPBF) normally exhibit low ductility. In the present study, a new plastic deformation mode of residual stress tailored high stacking fault (SF) is proposed for LPBF fabricated CCM alloy, delivering an excellent ductility (∼14.5%) in the as-fabricated state. Elaborate microstructural characterization elucidated that low level of initial residual stress contributes to a high stacking fault probability, generating extensive amounts of SFs to sustain the plastic deformation. Such massive deformation faulting activities mitigated the strain localization between FCC/HCP phase of CCM alloy with high residual stress level. Further low temperature annealing treatment validated the above theory, and increased the ductility to ∼21.4% with a high tensile strength of ∼1181 MPa. The present study demonstrated that the ductility of LPBF fabricated CCM alloy can be significantly enhanced by tuning the internal residual stress and the associated stacking fault probability." @default.
- W4381187780 created "2023-06-20" @default.
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- W4381187780 date "2023-10-01" @default.
- W4381187780 modified "2023-10-15" @default.
- W4381187780 title "Ductility enhancement of additively manufactured CoCrMo alloy via residual stress tailored high stacking fault probability" @default.
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- W4381187780 doi "https://doi.org/10.1016/j.scriptamat.2023.115626" @default.
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