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A high-throughput correlative study of the local mechanical properties,chemical composition and crystallographic orientation has been carried out inselected areas of cast Inconel 718 specimens subjected to three differenttempers. The specimens showed a strong Nb segregation at the scale of thedendrite arms, with local Nb contents that varied between 2 wt.% in the core ofthe dendrite arms to 8 wt.% in the interdendritic regions and 25 wt.% withinthe second phase particles (MC carbides, Laves phases and {\delta} phaseneedles). The nanohardness was found to correlate strongly with the local Nbcontent and the temper condition. On the contrary, the indentation elasticmoduli were not influenced by the local chemical composition or tempercondition, but directly correlated with the crystallographic grain orientation,due to the high elastic anisotropy of nickel alloys.

High-throughput nanoindentation mapping of cast IN718 nickel-based superalloys: influence of the Nb concentration