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Post-process heat treatment design for tunable strength and toughness in L-PBF 2507 super duplex stainless steel
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DOI：10.1016/j.mtla.2026.102799.png)
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Abstract
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• LPBF 2507 SDSS reached near-full density above 160 J mm–3. • Stress relief retained ferrite-dominated non-equilibrium microstructures. • Solution annealing restored near-balanced ferrite/austenite fractions. • As-built specimens showed the highest strength and hardness. • Solution annealing improved ductility and impact energy but reduced strength.
Keywords:
L-PBF
Super duplex stainless steel
Heat treatment
Mechanical properties
Elastoplastic modeling
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