The nitriding response of additively manufactured M300 maraging tool steel was investigated through a series of nitriding treatments at different temperatures in the range 360–480 °C for a duration of 40 h. The interaction between nitrogen and alloying element nitrides (Ti and Mo) and intermetallics (Ni₃Ti and Ni₃Mo) was studied by comparing nitriding responses of as-solution treated and subsequently aged specimens. The nitriding behavior was found to depend strongly on the initial condition of the material and the nitriding temperature applied. Ultra-low temperature nitriding at 360 °C was found to be feasible as it resulted in a nitrided case, albeit with incomplete precipitation hardening of the bulk structure, thus resulting in a softer core. The application of a post-ageing treatment resulted in full bulk hardening and distinctly changed the appearance of the hardness profile.

通过在 360-480 °C 范围内的不同温度下持续 40 小时的一系列氮化处理，研究了增材制造的 M300 马氏体时效工具钢的氮化响应。氮与合金元素氮化物（Ti 和 Mo）和金属间化合物（Ni ₃ Ti 和 Ni ₃）之间的相互作用Mo) 通过比较溶液处理和随后老化的样品的氮化反应来研究。发现渗氮行为很大程度上取决于材料的初始条件和所应用的渗氮温度。发现 360 °C 的超低温渗氮是可行的，因为它会产生渗氮情况，尽管整体结构的沉淀硬化不完全，因此会产生更软的芯。后时效处理的应用导致整体硬化并明显改变硬度分布的外观。