A Novel Approach to Determine Variable Solute Partition Coefficients

Experimental determination of solute redistribution behavior during solidification of additively manufactured 316L

“…The tendency of an element to segregate is defined by its partition coefficient = * / * , where * is the nondimensional liquid composition. The evolution of k with the solid fraction was determined by the mass balance analysis (MBA) method [20], such that…”

“…. Solid fractions close to 1 lead to large uncertainties of k [20], thus partition coefficients were determined for fs up to 0.95. Si was not taken into account in the weighting algorithm: its low mean concentration implies that very small variations of * * leads to large values of ̅ * * , giving this element a disproportionate influence on the rank determination.…”