What question did this study set out to answer?

This study aims to investigate the evolution of microstructure and residual stress during the Wire Arc Additive Manufacturing of AISI 316L stainless steel.

June 4, 2026Journal of Materials Research and TechnologyOpen Access

Numerical and Experimental Analysis of the Residual Stress and Microstructure in Stainless Steel Thin-walled Components Manufactured by Wire Arc Additive Manufacturing

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Authors

ASArdeshir SarmastUniversity of Freiburg MKMarkus KöhlerTechnische Universität Braunschweig JSJan SchubnellFraunhofer Institute for Mechanics of Materials

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Implication

Randomized trial investigates microstructure and residual stress during WAAM in stainless steel components, suggesting modifications can enhance performance.

Key Points

This study aims to investigate the evolution of microstructure and residual stress during the Wire Arc Additive Manufacturing of AISI 316L stainless steel.
Utilized numerical simulations and experimental techniques to analyze microstructure and residual stresses.
Analyzed microstructure with optical and scanning electron microscopy.
Measured residual stresses using neutron diffraction and a thermo-mechanical model for simulation.
Less than 10% of the microstructure consists of inter-dendritic δ-ferrite, providing high toughness.
Residual stresses reached 500 MPa in the constrained sample at the ends, explaining high cracking risks.
Microstructures showed periodic patterns with equiaxed dendrites at low G/R ratios and columnar structures at high G/R ratios.

Cite This Study

Sarmast et al. (2026) studied this question.

synapsesocial.com/papers/6a211591d499ed480b16e9c0 https://doi.org/10.1016/j.jmrt.2026.05.349

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Implication

Randomized trial investigates microstructure and residual stress during WAAM in stainless steel components, suggesting modifications can enhance performance.

Numerical and Experimental Analysis of the Residual Stress and Microstructure in Stainless Steel Thin-walled Components Manufactured by Wire Arc Additive Manufacturing

Discussion

Member takes

Implication

Key Points

Cite This Study

Numerical and Experimental Analysis of the Residual Stress and Microstructure in Stainless Steel Thin-walled Components Manufactured by Wire Arc Additive Manufacturing

Discussion

Member takes

Implication

Key Points

Cite This Study

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