Journal
MATERIALS
Volume 11, Issue 4, Pages -Publisher
MDPI
DOI: 10.3390/ma11040614
Keywords
selective laser melting; CuSn10 powder; laser energy density; microstructure; mechanical properties
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Funding
- National Science and Technology Major Project of the Ministry of Science and Technology of China [2016YFB1100703]
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The selective laser melting of tin bronze (CuSn10) powder was performed with a laser energy density intensity level at 210, 220, and 230 J/mm(2). The composition was homogeneous with almost all tin dissolved into the matrix. The grain size of the obtained alpha copper phase was around 5 mu m. The best properties were achieved at 220 J/mm(2) laser energy density with a density of 8.82 g/cm(3), hardness of 78.2 HRB (Rockwell Hardness measured on the B scale), yield strength of 399 MPa, tensile strength of 490 MPa, and an elongation that reached 19%. Balling effect appeared and resulted into a decrease of properties when the laser energy density increased to 230 J/mm(2).
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