發(fā)布時間：2019-06-19 18:25

【摘要】：使用優(yōu)化工藝對冷作模具鋼SDC99進行TD法鹽浴滲釩,獲得了厚度約13μm的VC滲釩層,并對其截面形貌、物相、結(jié)合力、顯微硬度梯度和摩擦磨損性能進行了研究。結(jié)果表明,滲后截面由表及里為滲釩層、過渡層、基體;滲釩層主要由VC相組成,同時還有一些VC_x(x=0.65~0.90)相;滲層到基體的硬度呈下降趨勢;滲層與基體結(jié)合強度約為72 N;經(jīng)過TD處理的試樣比未經(jīng)處理的試樣磨損體積減少70%,VC滲層的磨損機理為試樣表面初期產(chǎn)生犁溝,隨磨損試驗的進行逐漸產(chǎn)生微裂紋并不斷擴展,最終導致滲層呈薄片狀剝落,表現(xiàn)為疲勞磨損的特征。
[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，

本文編號：2502555