X-ray Diffraction Analysis of Creep-deformed Nitrogen-added 316LN Stainless Steels

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2024年7月27日

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S. Murugesan,
R. Mythili,
G. V. Prasad Reddy,
V. Ganesan,
R. Thirumurugesan,
Arup Dasgupta

摘要

X-ray diffraction detailed analysis of nitrogen-added austenitic 316LN stainless steels with different nitrogen concentrations (0.07, 0.11, 0.14, 0.22 wt.%) was carried out in creep-tested (at 923 K, 200 MPa) and solution-annealed conditions. The effect of nitrogen on lattice parameter was studied before and after creep testing. Size and strain were estimated through Williamson–Hall analysis. High nitrogen-added 316LNSS showed lower dislocation density. Increase in creep rupture lifetime with nitrogen content correlated well with the lattice parameter, crystallite size, and strain.