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October 10, 2025

Thermal Fatigue of Additive Manufacture Laser Powder Bed Fusion And Wrought 316LN Stainless Steel Prototypic Small-Bore Globe Valves – A Comparative Study

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Authors

JAJoe AireyAMAndrew MorleyMMMichael A. Matthews

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Overview

Testing reveals similar fatigue crack behaviours in 316LN stainless steel from additive manufacture and wrought methods, suggesting parity in performance.

Key Points

  • Fatigue cracks initiated and grew in both AM and wrought materials during thermal cycling, but did not cause functional failures.
  • The destructive examination showed no significant difference in fatigue behaviour between valve bodies made from additive manufacture and wrought steel.
  • Testing involved thermal transient cycling at constant pressure, exceeding the code allowable cycle limits for safety assessments.
  • The findings support developing codes for integrating modern manufacturing in safety-critical applications, highlighting code conservatism.

Cite This Study

Airey et al. (2025) studied this question.

synapsesocial.com/papers/68e8619c7ef2f04ca37e42dahttps://doi.org/10.1115/pvp2025-154585
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Also Consider

Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context:

  1. 1Challenges in Standardizing Additive Manufacturing for Nuclear Components and Associated Material Testing III: Fatigue Test of Type316L Stainless Steel for Standardization of AM Materials in the Nuclear Field – 1st Report2025
  2. 2Challenges in Standardizing Additive Manufacturing for Nuclear Components and Associated Material Testing II) a Statistical Approach to Material Specification Values and Procedures Qualification Methods for Additive Manufactured 316 L Stainless Steel2025
  3. 3Dissipative and thermal aspects in cyclic loading of additive manufactured AISI 316L2024 · 14 citations
  4. 4Fatigue and fracture analysis of Laser powder bed fusion stainless steel alloys: Influence of powder preparation, melt pool geometry, and scanning strategies – A review2026
  5. 5Approach for Qualifying Laser Powder Bed Fusion 316H in Section III, Division 52025