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首页> 外文会议>International Conference on Trends in Welding Research >Effects of Parameters on Microstructure and Mechanical Properties of Cu-Cr Alloys Fabricated by Selective Laser Melting
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Effects of Parameters on Microstructure and Mechanical Properties of Cu-Cr Alloys Fabricated by Selective Laser Melting

机译：参数对选择性激光熔化制造Cu-Cr合金微观结构和力学性能的影响

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Cu-Cr-Zr alloys were fabricated by selective laser melting (SLM), and the effects of the SLM parameters were investigated in relation to the microstructure and mechanical properties of the alloys. The microstructure was observed by optical microscopy (OM) and scanning electron microscopy (SEM). The crystallographic orientation was examined using X-ray diffractometry (XRD). The mechanical properties were evaluated by tensile testing. By observing the microstructure, the pores were determined to be crescentic and larger than the original powder, suggesting that balling occurred during laser scanning. Interestingly, the tensile strength at a scanning speed of 600 mm-s~(-1), was highest, both in Ar or N_2 atmospheres, although no significant difference was observed in the relative density or the oxygen and nitrogen concentrations of the SLM builds. However, the crystallographic orientation varied according to the scanning speed, which suggests that tensile strength was influenced by the crystallographic anisotropy of SLM builds.
机译：通过选择性激光熔化（SLM）制造Cu-Cr-Zr合金，研究了与合金的微观结构和机械性能相关的SLM参数的影响。光学显微镜（OM）和扫描电子显微镜（SEM）观察微观结构。使用X射线衍射测定（XRD）检查晶体取向。通过拉伸测试评估机械性能。通过观察微观结构，测定孔是新月形的，大于原始粉末，表明在激光扫描期间发生弹性。有趣的是，在AR或N_2气氛中，扫描速度的扫描速度的拉伸强度最高，但在相对密度或SLM构建的相对密度或氧气和氮浓度下没有观察到显着差异。然而，晶体取向根据扫描速度而变化，这表明拉伸强度受SLM构建的晶体各向异性的影响。

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