Affiliation:
1. Suzhou Chien-Shiung Institute of Technology, Suzhou, China
2. School of Mechanical and Electric Engineering, Changchun University of Science and Technology, Changchun, China
Abstract
This study aimed to investigate the effects of laying angles (0°, 15°, 30°, 45°, 60°, 75° and 90°) on surface roughness, density behaviour, residual stress, and mechanical properties of 316L stainless steel components fabricated by selective laser melting. The findings revealed that the 15° samples exhibited the best surface quality, while the 90° samples had a roughness of up to 18μm due to the staircase effect and balling behaviour. The residual stress of the samples decreased gradually as the laying angle increased. The density of the 0° samples reached 99.92%, whereas the 90° samples were only 99.62%. The 90° components exhibited a good tensile strength of 678 MPa, while the 0° samples had lower tensile strength.
Subject
Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics,General Materials Science