Computer aided manufacturing (CAM) techniques for directed energy deposition (DED) affect the material properties of the manufactured component based on the scan strategy used. This research investigates the material characteristics of turning-style toolpath strategies to generate axisymmetric components with additive manufacturing (AM), referred to in this research as additive turning. This novel approach leverages existing CAM technology for turning, where the component rotates around a stationary cutting tool, to generate toolpath trajectories for DED with varying wall-thicknesses and controlled deposition angles. This strategy allows for entire components to be deposited in one continuous deposition, resulting in reduced cycle-time and improved material usage efficiency compared to conventional AM strategies where the beam is switched off at the end of every layer. Results from this study show that the use of additive turning can produce over 99 % dense components with less variation and anisotropy in texture and hardness, as well as a lower variation in elongation to failure when compared to conventional strategies. This research highlights that various CAM strategies could be deployed for AM to improve process efficiency or enable localized control over part performance.

用于定向能量沉积 (DED) 的计算机辅助制造 (CAM) 技术会根据所使用的扫描策略影响制造组件的材料特性。本研究调查车削式刀具路径策略的材料特性，以使用增材制造 (AM) 生成轴对称部件，在本研究中称为增材车削。这种新颖的方法利用现有的 CAM 技术进行车削，其中组件围绕固定切削刀具旋转，为 DED 生成具有不同壁厚和受控沉积角度的刀具路径轨迹。这种策略允许在一次连续沉积中沉积整个组件，与在每层末端关闭光束的传统增材制造策略相比，可缩短周期时间并提高材料使用效率。这项研究的结果表明，与传统策略相比，使用增材车削可以产生超过 99% 的致密部件，其质地和硬度的变化和各向异性较小，断裂伸长率变化也较小。这项研究强调，可以为 AM 部署各种 CAM 策略，以提高流程效率或实现对零件性能的局部控制。与传统策略相比，断裂伸长率的变化较小。这项研究强调，可以为 AM 部署各种 CAM 策略，以提高流程效率或实现对零件性能的局部控制。与传统策略相比，断裂伸长率的变化较小。这项研究强调，可以为 AM 部署各种 CAM 策略，以提高流程效率或实现对零件性能的局部控制。