| Abstract Scope |
Functionally graded materials (FGMs) are a class of material systems with properties that vary over one or more dimension by progressively changing the chemistry or microstructure with position. One method for fabricating FGMs with varying elemental composition is through layer-by-layer directed energy deposition additive manufacturing (AM). The capacity to create multi-phase materials with gradual variations in compositions and structures defined as functionally graded additive manufacturing (FGAM). Titanium-based FGMs have high strength-to-weight ratio, excellent biocompatibility, thus they can be applied in aerospace and medical field. However, the challenge for FGMs fabricated by AM is the delamination of the part caused by intermediate phases. By elaborating on additive manufacturing (AM) processes, structure and properties, we provide a detailed guideline for the design of the Titanium-based FGMs. The experimental-computational approach described herein for characterizing FGMs can be used to improve the understanding and design of other FGMs. |