离子渗氮后的扩散处理对7Cr7Mo2V2Si冷作模具钢性能的影响

于兴福, 西克宇, 张宏伟, 王全振, 郝天赐, 郑冬月, 苏勇

Effect of Post-diffusion Treatment on Microstructure and Properties of Plasma Nitriding 7Cr7Mo2V2Si Cold Work Mold Steel

YU Xingfu, XI Keyu, ZHANG Hongwei, WANG Quanzhen, HAO Tianci, ZHENG Dongyue, SU Yong

图2 7Cr7Mo2V2Si钢经520 ℃ × 24 h离子渗氮并在550 ℃扩散不同时间后渗氮层的厚度

Fig.2 Optical microscope images of 7Cr7Mo2V2Si steel after plasma nitriding at 520 oC for 24 h and diffusion at 550 oC for different time (a) without diffusion treatment; (b) diffusion for 10 h; (c) diffusion for 20 h; (d) diffusion for 30 h