Metal Additive Manufacturing: A Review of Mechanical Properties (Postprint)

This article reviews published data on the mechanical properties of additively manufactured metallic materials. The additive manufacturing techniques utilized to generate samples covered in this review include powder bed fusion e.g., EBM, SLM, DMLS and directed energy deposition e.g., LENS, EBF3. Although only a limited number of metallic alloy systems are currently available for additive manufacturing e.g., Ti-6Al-4V, TiAl, stainless steel, Inconel 625718, and Al-Si-10Mg, the bulk of the published mechanical properties information has been generated on Ti-6Al-4V. However, summary tables for published mechanical properties andor key figures are included for each of the alloys listed above, grouped by the additive technique used to generate the data. Published values for mechanical properties obtained from hardness, tensioncompression, fracture toughness, fatigue crack growth, and high cycle fatigue are included for as-built, heat-treated, andor HIP conditions, when available. The effects of test orientationbuild direction on properties, when available, are also provided, along with discussion of the potential sources e.g., texture, microstructure changes, defects of anisotropy in properties. Recommendations for additional work are also provided.