Wang Lianfeng, Sun Jing, Zhu Xiaogang, Cheng Lingyu, Shi Yun, Guo Lijie, Yan Biao
School of Materials Science and Engineering, Tongji University, Shanghai 201804, China.
Shanghai Aerospace Equipments Manufacturer Co., Ltd., Shanghai 200245, China.
Materials (Basel). 2018 Jan 3;11(1):66. doi: 10.3390/ma11010066.
In this paper, aluminum alloy samples were fabricated by selective laser melting (SLM) and subsequently T2 heat treatment was undertaken. In order to obtain comprehensive results, various experiments on densification, hardness, tensile strength, bending strength and microstructure characterization were carried out. The results show that densification of samples after T2 heat treatment does not vary very much from the SLMed ones, while the Brinell hardness and strength decreases to about 50%. Moreover, the plasticity and fracture deflection increases about 3 fold. The effects on the microstructure and the mechanical properties of the SLMed aluminum alloy samples and subsequent T2 heat treatment were studied.
在本文中，通过选择性激光熔化（SLM）制备了铝合金样品，随后进行了T2热处理。为了获得全面的结果，进行了关于致密化、硬度、拉伸强度、弯曲强度和微观结构表征的各种实验。结果表明，T2热处理后样品的致密化与SLM处理后的样品相比变化不大，而布氏硬度和强度降低至约50%。此外，塑性和断裂挠度增加了约3倍。研究了SLM处理的铝合金样品及随后的T2热处理对微观结构和力学性能的影响。
