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This study aims to evaluate the effectiveness of laser heat treatment (LHT) on the microstructure and mechanical properties of AlSi10Mg parts produced by powder bed fusion.

May 24, 2026Progress in Additive ManufacturingOpen Access

Tuning the microstructure and mechanical properties of AlSi10Mg powder bed fusion (PBF-LB) parts by local laser heat treatment

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This study aims to evaluate the effectiveness of laser heat treatment (LHT) on the microstructure and mechanical properties of AlSi10Mg parts produced by powder bed fusion.
Investigated effects of laser power, movement speed, and beam diameter on microstructure and hardness.
Compared hardness, tensile strength, and fatigue performance of LHT-treated parts with as-built and T6 heat-treated conditions.
Analyzed microstructural evolution post LHT to understand mechanical property adjustments.
LHT improved tensile strengths comparable to T6 heat-treated specimens while increasing ductility.
In low-cycle fatigue regime, LHT specimens exhibited lowest fatigue strength due to retained scan track structure.
In high-cycle fatigue regime, LHT samples matched T6 treatment in fatigue strength, indicating superior defect tolerance.

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Randomized trial investigates laser heat treatment effects on fatigue strength in aluminum parts, highlighting its potential advantages.

Cite This Study

Kramer et al. (2026) studied this question.

synapsesocial.com/papers/6a1296c748a0ea1665673dd9 https://doi.org/10.1007/s40964-026-01729-1

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Tuning the microstructure and mechanical properties of AlSi10Mg powder bed fusion (PBF-LB) parts by local laser heat treatment

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Cite This Study

Tuning the microstructure and mechanical properties of AlSi10Mg powder bed fusion (PBF-LB) parts by local laser heat treatment

Key Points

Discussion

Implication

Cite This Study

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