本规范规定了使用激光定向能量沉积（L-DED-）工艺可重复生产预成型件/零件的过程控制。预制件旨在用于制造航空航天零件，但用途不限于此类应用。原料可以是金属丝（对于L-DED-wire）或粉末（对于L-DED-powder）。

This specification establishes process controls for the repeatable production of preforms/parts using the laser directed energy deposition (L-DED-) process for additive manufacturing. Preforms are intended to be used to manufacture aerospace parts, but usage is not limited to such applications. Feedstock may be either wire (for L-DED-Wire) or powder (for L-DED-Powder).