Multi-materials additive manufacturing (MMAM) allows the functional optimisation of components by tailoring the addition of alloys at different design locations in a single operation. In this study Laser Powder Bed Fusion (L-PBF) technique was used to manufacture layered specimens combining IN718 and 316L materials. The microstructure and mechanical properties were studied by scanning electron microscopy (SEM), tensile, micro and nanohardness testing. The fatigue tests were performed to determine the crack propagation process through multi-layer specimens in the as-built (AB) state.

中文翻译：

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IN718/316L多材料层状结构激光粉末床融合疲劳裂纹扩展

多材料增材制造 (MMAM) 允许通过在单个操作中在不同设计位置定制添加合金来优化组件的功能。在这项研究中，激光粉末床融合 (L-PBF) 技术用于制造结合 IN718 和 316L 材料的分层试样。通过扫描电子显微镜（SEM）、拉伸、微米和纳米硬度测试研究了显微组织和机械性能。进行疲劳测试以确定通过多层试样在竣工 (AB) 状态下的裂纹扩展过程。