激光功率对45碳钢表面组织及性能的影响  

Effect of Laser Power on Surface Microstructure and Properties of 45 Steel

作　　者：任晶鑫[1] 唐明忠[1] 郭鹏[1] 郑国阔[1] 

机构地区：[1]辽宁工程技术大学材料学院,辽宁阜新123000

出　　处：《热加工工艺》2012年第16期128-129,133,共3页Hot Working Technology

摘　　要：对45钢表面进行激光相变硬化处理,利用光学显微镜、硬度测试、磨损测试等表征手段,研究了在扫描速度一定的前提下,激光功率对45钢改性层显微形貌、硬度及耐磨性能的影响。结果表明:在扫描速度为6 mm/s、功率为800 W时,改性层硬度达到最大值36.3 HRC;当功率为900 W时,磨损率最低,为4.162 mg/cm2;当功率为800 W时,磨损率达到最大值,为5.924 mg/cm2。Laser transformation hardening was carried out on the surface of 45 steel.The effects of laser power on the microscopic morphology,hardness,wear-resisting property of the modification layer were researched by OM,hardness test,wear test and so on when the scanning speed is fixed.The experimental results indicate that when scanning speed is 6 mm/s,power is 800 W,the hardness of modification layer reaches maximum 36.3 HRC.When power is 900 W,the wear rate reaches minimum 4.162 mg/cm2.When power is 800 W,the wear rate reaches the maximum of 5.924 mg/cm2.

关 键 词：激光 45钢 组织 硬度 

分 类 号：TG174[金属学及工艺—金属表面处理]