Abstract
The precipitation and segregation phenomenon in a type 409L Ti-stabilized 11 wt.% Cr ferritic stainless steel has been investigated using transmission electron microscopy and a laser-assisted three-dimensional atom probe. In solution-treated and aged specimens, a strong segregation and consequent depletion of Cr was observed, as well as segregation of C and Ti atoms along the grain boundary. The reason for the Cr segregation and the way to avoid such segregation is discussed.
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