Gas nitriding of a plasma detonation modified die steel

作者：Zou, Jin^*; Lu, Lei; Kolisnichenko, O. V.; Chen, Wei; Yu, Jiu-Ming

来源：Materials Letters, 2021, 287: 129297.

DOI：10.1016/j.matlet.2020.129297

• Plasma detonation technique
• Gas nitriding
• Modification
• Grain boundaries
• Diffusion

The effects of the plasma detonation technique (PDT) on the morphology, structure and nitrogen concentration distribution of the nitrided layer on AISI H13 steel have been investigated. The results showed that the PDT formed a modified layer on the surface of AISI H13 steel composed of a melted layer (alpha-Fe and gamma-Fe) and a fine-grained layer (alpha-Fe). Although the formation of PDT-modified layer was not conducive to the nitriding process, the nitrided layer thickness increased by 40% by grinding off the melted layer.