60 research outputs found
Construction of next-generation superplastic forming using additive manufacturing and numerical techniques
Characterising the Effects of Strain Rate, Crystallographic Texture and Direction of Loading on the Mechanical Behaviour of Ti-6Al-4V
Microstructure and Mechanical Properties of Ti-12Mo-8Nb Alloy Hot Swaged and Treated for Orthopedic Applications
Correlation of surface integrity with processing parameters and advanced interface cooling/lubrication in burnishing of Ti-6Al-4V
Direct laser deposition with different types of 316L steel particle:a comparative study of final part properties
This paper investigates the role that particle size and morphology have in determining the final characteristics of a part produced by Direct Laser Deposition. Stainless steel 316L in the form of traditional gas-atomised powder or metal shavings in two size ranges were deposited into multiple-layer thin-walled parts at different process parameters. The walls were characterised, considering properties such as geometry, microstructure, composition, physical and corrosive properties. and results matched to the type of build material. Results showed that using particles of > 150 um ESD offered few functional advantages, leading to a process with lower deposition efficiency and part with lower mechanical properties. Using machined shavings increases deposition efficiency and can reduces gas porosity compared with powder in the same size range, but also results in higher surface oxidation, thought to be due to higher oxidation on the original shavings. This is a barrier for some applications, but the deposition of machined shavings offers significant economic advantages
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