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June 12, 2026ISIJ InternationalOpen Access

Systematic study of rapid solidification in laser powder-bed fusion of stainless steels to verify applicability of columnar-equiaxed transition

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Authors

KFKishin FUKUSHIMAMOMasayuki OkugawaYMYuichiro Miyata

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Overview

Randomized trial investigates solidification behavior in stainless steels, indicating unique microstructural guidelines.

Key Points

  • This study aims to systematically understand microstructural formation behavior during rapid solidification in stainless steels under laser powder-bed fusion conditions.
  • Systematic investigation of solidification behavior in laser-melted regions of austenitic, ferritic, and martensitic stainless steels.
  • Examination of liquidus-solidus temperature difference as a key parameter for solidification behavior.
  • Machine-learning analysis using random forest to analyze the effect of alloy concentrations on microstructural formation.
  • CET criteria serve as a reliable guideline for ferritic and martensitic stainless steels in powder-bed fusion processes.
  • Austenitic stainless steels display an opposite trend to CET criteria; the solidification behavior is not aligned with traditional guidelines.
  • Concentrations of Si, Mn, and C significantly affect microstructural formation mechanisms.

Cite This Study

FUKUSHIMA et al. (2026) studied this question.

synapsesocial.com/papers/6a2ba1ca8101cf8926f0113bhttps://doi.org/10.2355/isijinternational.isijint-2026-038
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Also Consider

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  1. 1Single-track investigation of rapid solidification conditions of Hastelloy-X Ni-based superalloy in laser powder-bed fusion and applicability of columnar equiaxed transition criteria2026
  2. 2Processing-microstructure relationships in ferrous alloys via mixed powder laser powder bed fusion2024 · 1 citations
  3. 3Modeling of rapid solidification in Laser Powder Bed Fusion processes2024 · 22 citations
  4. 4Multimodal synchrotron characterization of the formation and spatial distribution of retained austenite in PBF-LB/M-manufactured ferritic–martensitic steel2026
  5. 5Preprint for Impact of chemical composition on solidification microstructure and hardness of additively manufactured 316L steel2025