Skip to Main content Skip to Navigation
Journal articles

Microstructure and mechanical properties of pure copper manufactured by selective laser melting

Abstract : Selective laser melting (SLM) was used to fabricate copper samples under various processing parameters. The influence of laser linear energy density on the microstructures and mechanical properties of the SLM copper samples were investigated theoretically and experimentally. Based on the results, the optimal linear energy density that can result in the best relative density (99.10 ± 0.5%) and surface roughness (Ra = 12.72 ± 4.54 μm) was determined to be 0.50 J/mm which corresponds to the laser power and scanning speed of 200 W and 400 mm/s, 300 W and 600 mm/s, respectively. Under the optimal processing conditions, the microhardness and strength (i.e., yield strength and ultimate tensile strength) of the copper sample achieved the highest value. In addition, it is also found that the microstructure of the SLM pure copper samples was characterized by polycrystalline grains with columnar dendrites and equiaxed structures dispersed inside. The grain size showed a decreasing trend as linear energy density increased due to the improved intrinsic heat treatment effect. The paper proves that nearly full dense copper with desirable mechanical properties can be fabricated through SLM.
Document type :
Journal articles
Complete list of metadata
Contributor : Jean-Baptiste VU VAN Connect in order to contact the contributor
Submitted on : Tuesday, May 26, 2020 - 5:39:19 PM
Last modification on : Thursday, August 4, 2022 - 5:07:42 PM

Links full text



Xingchen Yan, Cheng Chang, Dongdong Dong, Shuohong Gao, M.A. Wenyou, et al.. Microstructure and mechanical properties of pure copper manufactured by selective laser melting. Materials Science and Engineering: A, Elsevier, 2020, 789, pp.139615. ⟨10.1016/j.msea.2020.139615⟩. ⟨hal-02626528⟩



Record views