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September 27, 2025MaterialsOpen Access

Coefficient of Thermal Expansion of AlSi10Mg, 316L Stainless Steel and Ti6Al4V Alloys Made with Laser Powder Bed Fusion

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Authors

SESelami EmanetLouisiana State UniversityEHEdem HonuKAKekeli Agbewornu

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Implication

This analysis reveals the CTE of LPBF alloys is influenced by laser parameters and annealing, suggesting improvements for high-performance applications.

Key Points

  • AlSi10Mg has the highest CTE, but its expansion is susceptible to porosity and defects.
  • 316L stainless steel shows stable CTE values with minimal change post-annealing due to its dense microstructure.
  • Ti-6Al-4V exhibits the lowest CTE, which can be improved through annealing treatments.
  • Higher laser power reduces porosity and stabilizes CTE, while optimal scanning speed minimizes defects.

Cite This Study

Emanet et al. (2025) studied this question.

synapsesocial.com/papers/68d7b3e2eebfec0fc5236b69https://doi.org/10.3390/ma18194468
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