At present, almost all the application of laser melting deposition (LMD) additive manufacturing (AM) are based on horizontal substrate plane, which has greatly limited its extensive application in the field of refabrication (RF) or hybrid manufacturing (HM) in the situation of the substrate plane is inclined. This paper reports on the effect of process parameters and substrate-inclined angle on the fabrication profile of LMD, and mechanical properties of stainless steel part fabricated by HM which combined LMD and subtractive manufacturing (SM) inclined substrate were investigated. The experimental results show that the height and displacement offset of deposition layer are on an upward trend along with the increase of laser power and powder feed rate, and on a downward trend along with scanning speed increase. The increase of substrate-inclined angle results in a slight decrease of deposition height and an increase of displacement offset. The standard tensile and bending samples were fabricated by LMD integrating with substrate of stainless steel, and the mechanical performances experimental results indicate that the tensile strength of interface between substrate and LMD part is higher than the LMD fabrication component, both the tensile and yield strength are obviously enhanced by heat treatment, and they reach up to 653 MPa and 456 MPa, respectively. Subsequently, the interface of LMD and substrate part shows a good bending property, and no fracturing process occurs on the interface regardless of the heat treatment. The substrate-inclined angle has almost no effects on the tensile and bending strengths.

目前，几乎所有的激光熔融沉积（LMD）增材制造（AM）应用都是基于水平基板平面，这种情况极大地限制了其在翻新（RF）或混合制造（HM）领域中的广泛应用。基板平面的倾斜角度是倾斜的。本文报道了工艺参数和衬底倾斜角度对LMD制造轮廓的影响，并研究了将LMD与减法制造（SM）倾斜衬底相结合的HM制造的不锈钢零件的机械性能。实验结果表明，随着激光功率和送粉量的增加，沉积层的高度和位移偏移呈上升趋势，而随着扫描速度的增加，沉积层的高度和位移偏移呈下降趋势。衬底倾斜角的增加导致沉积高度的略微降低和位移偏移的增加。LMD与不锈钢基板结合制成标准的拉伸和弯曲试样，力学性能实验结果表明，基板与LMD零件的界面的抗拉强度高于LMD制造部件，拉伸强度和屈服强度均达到了最大值。通过热处理明显增强，它们分别达到653 MPa和456 MPa。随后，LMD和衬底部分的界面显示出良好的弯曲性能，并且不管热处理如何，在界面上都没有发生破裂过程。基材倾斜角度几乎对拉伸强度和弯曲强度没有影响。