材料科学与工程学报2017，Vol.35Issue(5)：719-723,854,6.DOI:10.14136/j.cnki.issn 1673-2812.2017.05.007
激光淬火功率对45#钢抗植物磨料磨损性能的影响
Effect of Laser Quenching Power on Wear Behavior of 45# Steel Against Plant Abrasive
摘要
Abstract
Taking the alfalfa grass powder as the typical plant abrasive,the effect of laser quenching power on wear behavior of 45# steel against plant abrasive is studied systematically.The result shows that under the laboratory conditions,the maximum hardness of the material reaches 679HV,and the maximum hardness is located in 0.2-0.4mm beneath the surface of the material.Wear properties of the 45# steel after laser quenching against the plant abrasive outclass the sample of non-laser quenching.There is no consistent impact tendency of laser power between the hardness and wear resistance,and the sample which has the best wear resistance doesn't have the best hardness.Wear mechanism of 45# steel after laser quenching against plant abrasive is mainly micro-cutting.Compared with the sample of non-laser quenching,the surface plough depth of the laser quenched sample is shallower and narrower.When the laser power is decreased to 1750W,fatigue of plastic deformation and spalling of carbides of the quenched material are increased significantly.The research can provide a theoretical basis for the durability design of agricultural machinery materials.关键词
laser quenching/power/45# steel/plant abrasive/wear propertiesKey words
laser quenching/power/45# steel/plant abrasive/wear properties分类
农业科技引用本文复制引用
万芳新,黄晓鹏,吴劲锋,黄建龙,张克平..激光淬火功率对45#钢抗植物磨料磨损性能的影响[J].材料科学与工程学报,2017,35(5):719-723,854,6.基金项目
国家自然科学基金资助项目(51365002,51065001),甘肃省自然科学基金资助项目(1506RJZA138),甘肃农业大学青年导师基金资助项目(GAU-QNDS-201204) （51365002,51065001）
