激光淬火工艺参数对贝氏体球铁组织和硬度的影响  

Effect of Laser Hardening Parameter on Microstructure and Properties of Bainite Nodular Iron

作　　者：韦志锋[1] 余圣甫[2] 

机构地区：[1]重庆石油高等专科学校机械系,重庆400040 [2]华中科技大学材料学院,湖北武汉430074

出　　处：《热加工工艺》2004年第6期35-36,共2页Hot Working Technology

摘　　要：采用不同激光能量密度对贝氏体球铁进行淬火强化。结果表明,当激光能量密度大于2.9J/cm3时,在淬火带的边缘易产生裂纹;而当激光能量密度为2.4～2.6J/cm3时,可以显著提高贝氏体球铁基体的硬度。The microseructure and properties of bainite spheroidal graphite iron were strudied by laser hardening processing with different energy density. The practical investigations show that the nodular iron substrate is easily induced strain cracks if the laser energy density is above 2.9 J/cm^3. Whereas, the hardness of the bainite nodular iron substrate can be increased significantly if the laser energy density is about 2.4~2.6 J/cm^3.

关 键 词：贝氏体球铁 激光淬火 激光能量密度 

分 类 号：TG156.3[金属学及工艺—热处理] TG255[金属学及工艺—金属学]