Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Direct laser deposition with different types of 316L steel particle
T2 - a comparative study of final part properties
AU - Mahmood, Khalid
AU - Pinkerton, Andrew
PY - 2013/4
Y1 - 2013/4
N2 - 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.
AB - 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.
KW - Laser
KW - deposition
KW - cladding
KW - stainless steel
KW - powder
KW - gas-atomised
KW - shavings
U2 - 10.1177/0954405413475961
DO - 10.1177/0954405413475961
M3 - Journal article
VL - 227
SP - 520
EP - 531
JO - Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture
JF - Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture
SN - 2041-2975
IS - 4
ER -