CM247LC is classified as a non-weldable Ni alloy due to the high Ti + Al content, which makes it susceptible to cracking. It is particularly prone to microcracking when processed by direct laser deposition (DLD). In this work, multiple single walls were manufactured by DLD in CM247LC using two different laser modes: continuous wave and pulse wave (PW). The manufactured walls were studied during processing and post-processing, and characterised by scanning electron microscopy, electron backscattered diffraction, thermal analysis and X-ray diffraction. The results indicate that crack-free conditions during the deposition process and the subsequent thermal processing can be achieved using the PW laser mode and that this can also lead to outstanding mechanical properties.

CM247LC 被归类为不可焊接的 Ni 合金，因为它的 Ti + Al 含量高，容易开裂。当通过直接激光沉积 (DLD) 处理时，它特别容易出现微裂纹。在这项工作中，DLD 在 CM247LC 中使用两种不同的激光模式制造了多个单壁：连续波和脉冲波 (PW)。在加工和后加工过程中对制造的墙壁进行了研究，并通过扫描电子显微镜、电子背散射衍射、热分析和 X 射线衍射进行了表征。结果表明，使用 PW 激光模式可以实现沉积过程和后续热处理过程中的无裂纹条件，这也可以带来出色的机械性能。