摘要
采用硬质合金 YG-8和焊条 FW-1101作电极,在电火花表面强化器上强化了 U70MnSi钢和40Cr 钢的表面;用 X 射线衍射仪分析了强化层的结构,用滚动和滚、滑磨损试验研究了强化层的耐磨性,用阳极极化和浸泡试验研究了40Cr 钢表面强化后的耐腐蚀性能。结果表明:强化层是由化合物和非晶组织组成的混合层;表面强化后试样的耐磨性明显提高;40Cr 强化层的混合组织对耐腐蚀性能的影响超过了层中缺陷和残余应力的影响,使其耐腐蚀性能提高。
The surface of U70MnSi and 40Cr were strengthened by a self-made electrical discharge surface strengthening equipment. Hard alloy YG-8 was used as surface coating materials for U70MnSi steel, and FW-1101 welding electrode for 40Cr steel. Composition of strengthened layer was analyzed by XRD. The wear resistance of strengthened layer was investigated by utilization of rolling-wear and rolling-sliding wear. After surface strengthened of 40Cr, the corrosion resistance was examined by anodic polarization and immersion. The results show that strengthened layer of two steels are mixture structure which composed of compound and amorphous structure. Wear resistance of two steels are considerably improved after strengthened under rolling-wear and rollingsliding wear conditions. Effects of surface mixture structure exceed those of defects and residual stress in strengthened layer, which make corrosion resistance of 40Cr strengthened layer increased.
出处
《机械工程材料》
CAS
CSCD
北大核心
2006年第12期44-47,共4页
Materials For Mechanical Engineering
作者简介
汤精明（1975-），男，安徽安庆人，硕士研究生。
导师：乔生儒教授
