精密成形工程
精密成形工程
정밀성형공정
METAL FORMING TECHNOLOGY
2015年
3期
58-61
,共4页
激光合金化%显微组织%冶金结合%硬度
激光閤金化%顯微組織%冶金結閤%硬度
격광합금화%현미조직%야금결합%경도
laser alloying%microstructure%metallurgical bonding%hardness
目的:为了提高45钢表面性能,采用CO2激光器对其表面进行合金化处理。方法利用带有能谱的扫描电子显微镜( SEM/EDS )、金相显微镜、X射线衍射仪、显微/维氏硬度计、扫描电镜等,对合金化层组织及性能进行了观察和分析。结果激光合金化层由合金化区、结合区和热影响区3部分组成,涂层与基体呈冶金结合;涂层主要含Cr3 C2,FeNi3,Cr23 C6,Fe3 C相;激光合金化层的显微硬度达1032 HV,约为基体的3.5倍。结论45钢经激光合金化处理,可改善其表面性能,显著提高其硬度。
目的:為瞭提高45鋼錶麵性能,採用CO2激光器對其錶麵進行閤金化處理。方法利用帶有能譜的掃描電子顯微鏡( SEM/EDS )、金相顯微鏡、X射線衍射儀、顯微/維氏硬度計、掃描電鏡等,對閤金化層組織及性能進行瞭觀察和分析。結果激光閤金化層由閤金化區、結閤區和熱影響區3部分組成,塗層與基體呈冶金結閤;塗層主要含Cr3 C2,FeNi3,Cr23 C6,Fe3 C相;激光閤金化層的顯微硬度達1032 HV,約為基體的3.5倍。結論45鋼經激光閤金化處理,可改善其錶麵性能,顯著提高其硬度。
목적:위료제고45강표면성능,채용CO2격광기대기표면진행합금화처리。방법이용대유능보적소묘전자현미경( SEM/EDS )、금상현미경、X사선연사의、현미/유씨경도계、소묘전경등,대합금화층조직급성능진행료관찰화분석。결과격광합금화층유합금화구、결합구화열영향구3부분조성,도층여기체정야금결합;도층주요함Cr3 C2,FeNi3,Cr23 C6,Fe3 C상;격광합금화층적현미경도체1032 HV,약위기체적3.5배。결론45강경격광합금화처리,가개선기표면성능,현저제고기경도。
In order to improve the surface properties of 45 steel, alloying treatment was carried out on its surface by CO2 laser. The microstructure and properties of the alloying layer were researched by means of scanning electron microscope with energy spectrum (SEM/EDS), metallographic microscope, X-ray diffractometer and microscopic/Vickers hardness tester. The coatings of laser alloying layer were constituted by alloying zone, bonding zone and heat affected zone, and the combination between the coating and the substrate was metallurgical. Cr3 C2 , FeNi3 , Cr23 C6 and Fe3 C were the main phases in the alloying layer. The microhardness of the laser alloying layer reached 1032 HV, which was about 3. 5 times that of the substrate. After laser alloying treatment, the surface properties of 45 steel were improved and the hardness was significantly increased.