Effect of process parameters on microstructures and properties of Al–42Si alloy fabricated by selective laser melting
Xiaoye Cai, Tong Liu, Xuan Yan, Zonghui Cheng, Lu Pan, Zongjun Tian, Liangshun Luo, Yanqing Su
Abstract
. After heat treatment, the residual stress is eliminated, microstructure stability and homogeneous of SLM-fabricated Al-42Si alloy are improved. The silicon distribution is more uniform and sizes increases about 1∼2μm, and the hardness decreases after heat treatment. The optimal SLM parameters for Al-42Si alloy are laser power of 320W, scanning speed of 1355 mm/s, layer thickness of 50μm and scanning space of 110μm.
Topics & Concepts
Materials scienceSelective laser meltingMicrostructureAlloyEutectic systemSiliconComposite materialCastingPhase (matter)MetallurgyOrganic chemistryChemistryAdditive Manufacturing Materials and ProcessesAdditive Manufacturing and 3D Printing TechnologiesWelding Techniques and Residual Stresses