In the present work, gaseous nitrocarburizing followed by water spray oxidation in vacuum was carried out on 4330V steel. The X-ray diffraction analysis showed that the thermochemically modified surface layer mainly consisted of ε-Fe_2-3(N,C), γ′-Fe₄(N,C), and magnetite (Fe₃O₄). To quantify the residual stress generated due to surface treatment, the Sin²ψ method was used. Residual stress of compressive nature up to a depth of 1 mm was observed, and its maximum value was 383 MPa. Nitrocarburizing followed by oxidation not only increased the surface hardness but also decreased the wear loss. The synergistic effect of corrosion-resistant phases formed after surface treatment improved surface hardness and compressive residual stress which resulted in the enhancement of corrosion fatigue life.

在目前的工作中，在4330V钢上进行了气态氮碳共渗，接着在真空中进行水喷雾氧化。X射线衍射分析表明，该热化学改性的表面层主要由ε -铁的_2-3（N，C），γ'-的Fe ₄（N，C），和磁铁矿（铁₃ Ò ₄）。为了量化表面处理产生的残余应力，Sin ²使用ψ法。观察到压缩性质的残余应力直至1 mm的深度，其最大值为383 MPa。氮碳共渗后再进行氧化，不仅增加了表面硬度，而且减少了磨损损失。表面处理后形成的耐腐蚀相的协同作用改善了表面硬度和压缩残余应力，从而延长了腐蚀疲劳寿命。