Journal
MATERIALS & DESIGN
Volume 111, Issue -, Pages 70-79Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.matdes.2016.08.078
Keywords
LAAM; Inconel 625; TiB2; Composite; Mechanical property
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Laser aided additive manufacturing (LAAM) was applied to produce nano-TiB2 particle reinforced Inconel 625 composite material. The influence of nano-TiB2 addition on the microstructure, micro-hardness, wear performance and mechanical properties of the composite was studied. The XRD and SEM analyses verified that the LAAM processed Inconel 625/nano-TiB2 composite consisted of single long columnar grain along building direction with TiB2 particles concentration at grain boundaries. The mechanical testing revealed that the LAAM processed Inconel 625/nano-TiB2 composite possessed excellent tensile properties (sigma(UTS) approximate to 1020 MPa, sigma(0.2YS) approximate to 714 MPa, delta approximate to 19%) with relatively high micro-hardness (HV0.2 = 347) and good abrasive resistance (COF approximate to 0.39). (C) 2016 Elsevier Ltd. All rights reserved.
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