CAJ | 학술논문

采用磁化辅助激光淬火和激光熔覆的工艺方法处理表面，通过扫描电子显微镜对比分析复合工艺与单一工艺下的磨面形貌及微观组织，进行表面硬度测试，摩擦磨损试验，探讨磁化效应的影响。结果表明，磁化辅助作用改善了淬硬层表面的裂纹敏感性及犁沟的程度，减轻了熔覆层表面的划痕痕迹，细化了晶粒组织；磁化作用还提高了淬硬层的表面硬度，略微降低了熔覆层的表面硬度，但在磨损失重量上并未得到改善。此外，磁化效应降低了淬硬层和熔覆层的摩擦系数，缩短了淬硬层的磨损跑合期，增加了熔覆层的磨损过程中的复杂性。
채용자화보조격광쉬화화격광용복적공예방법처리표면，통과소묘전자현미경대비분석복합공예여단일공예하적마면형모급미관조직，진행표면경도측시，마찰마손시험，탐토자화효응적영향。결과표명，자화보조작용개선료쉬경층표면적렬문민감성급리구적정도，감경료용복층표면적화흔흔적，세화료정립조직；자화작용환제고료쉬경층적표면경도，략미강저료용복층적표면경도，단재마손실중량상병미득도개선。차외，자화효응강저료쉬경층화용복층적마찰계수，축단료쉬경층적마손포합기，증가료용복층적마손과정중적복잡성。
Magnetic-assisted laser hardening and laser cladding are used to deal with the sample surface. Investigations of magnetization effect are conducted by comparatively analyzing the grinding surface's morphology and microstructure under the condition of the composite and single technology with the tool of scanning electron to test the surface hardness and friction wear. The result shows that the function of magnetization as auxiliary can improve the crack sensitivity of the hardened surface layer and the furrow's degree, reduce the scratch marks of the cladding surface, and refine the grain organization. The surface hardness of the hardened layer was also increased by magnetization, with the surface hardness of the cladding layer reduced slightly, but the wear weight loss could not be improved. Besides, the coefficient friction of the hardened layer and cladding layer was reduced by it, with the period of the wear running-in shortened, and the complexity of the cladding layer during the wear progression increased.