TY - GEN
T1 - Impact of Solidification Segregation on the Thermal Stability of Oxides and Nitrides in Additively Manufactured 316L Austenitic Stainless Steel
AU - Wietecha-Reiman, Ian J.
AU - Palmer, Todd A.
N1 - Publisher Copyright:
Copyright © 2024 ASM International® All rights reserved.
PY - 2024
Y1 - 2024
N2 - The increasing demand for accurate fatigue modeling of powder metallurgy components in automotive, aerospace, and medical industries necessitates improved knowledge of composition-microstructure interactions. Variations in feedstock composition and thermomechanical history can produce unique microstructures whose impact on fatigue performance has not been adequately quantified. When characterizing additively manufactured 316L that is within nominal standard chemistry limits, oxide and nitride species were observed preferentially in the specimen contour region. Thermodynamic simulations provide evidence of segregation of the low manganese and high nitrogen composition driving this precipitation of these phases. When present in the specimen, they promoted brittle fracture mechanisms during fatigue.
AB - The increasing demand for accurate fatigue modeling of powder metallurgy components in automotive, aerospace, and medical industries necessitates improved knowledge of composition-microstructure interactions. Variations in feedstock composition and thermomechanical history can produce unique microstructures whose impact on fatigue performance has not been adequately quantified. When characterizing additively manufactured 316L that is within nominal standard chemistry limits, oxide and nitride species were observed preferentially in the specimen contour region. Thermodynamic simulations provide evidence of segregation of the low manganese and high nitrogen composition driving this precipitation of these phases. When present in the specimen, they promoted brittle fracture mechanisms during fatigue.
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U2 - 10.31399/asm.cp.ifhtse2024p0332
DO - 10.31399/asm.cp.ifhtse2024p0332
M3 - Conference contribution
AN - SCOPUS:85208827750
T3 - 29th International Federation for Heat Treatment and Surface Engineering World Congress, IFHTSE 2024
SP - 332
EP - 337
BT - 29th International Federation for Heat Treatment and Surface Engineering World Congress, IFHTSE 2024
PB - ASM International
T2 - 29th International Federation for Heat Treatment and Surface Engineering World Congress, IFHTSE 2024
Y2 - 30 September 2024 through 3 October 2024
ER -