SDC99钢TD法盐浴渗钒层结合力及摩擦磨损性能

发布时间：2019-06-19 18:25

【摘要】：使用优化工艺对冷作模具钢SDC99进行TD法盐浴渗钒,获得了厚度约13μm的VC渗钒层,并对其截面形貌、物相、结合力、显微硬度梯度和摩擦磨损性能进行了研究。结果表明,渗后截面由表及里为渗钒层、过渡层、基体;渗钒层主要由VC相组成,同时还有一些VC_x(x=0.65~0.90)相;渗层到基体的硬度呈下降趋势;渗层与基体结合强度约为72 N;经过TD处理的试样比未经处理的试样磨损体积减少70%,VC渗层的磨损机理为试样表面初期产生犁沟,随磨损试验的进行逐渐产生微裂纹并不断扩展,最终导致渗层呈薄片状剥落,表现为疲劳磨损的特征。
[Abstract]:The TD salt bath vanadium infiltration of cold working die steel SDC99 was carried out by using the optimized process. The VC vanadium infiltration layer with thickness of about 13 渭 m was obtained. The cross section morphology, phase, bonding force, microhardness gradient and friction and wear properties were studied. The results show that the cross section after infiltration is vanadized layer, transition layer and matrix, and the vanadium infiltrated layer is mainly composed of VC phase, and there are some VC_x (x 鈮，

本文编号：2502555