球铁材料脉冲激光表面强化的实验研究  

Study of Surface Modification by Pulse Laser of Ductile Iron

作　　者：巴发海[1] 甘翠华[2] 吴炜[1] 虞钢[2] 

机构地区：[1]中国科学院力学研究所非线性力学国家重点实验室,北京100080 [2]中国科学院力学研究所技术发展部,北京100080

出　　处：《中国激光》2003年第7期663-667,共5页Chinese Journal of Lasers

摘　　要：采用经过二元光学变换后呈二维点阵分布的脉冲激光束对球铁试样作了表面强化处理。对强化前后试样表面的粗糙度、强化层深度、强化层显微硬度分布和耐磨性进行了研究。结果表明,在保证试样表面粗糙度(表面微熔或不熔)的前提下,随脉宽增加强化区层深增加。耐磨性测试表明,脉冲激光强化处理可提高材料耐磨性1.8倍以上。Pulse laser with two-dimensional lattice distribution by optical transformation, was used to modify surface processing for ductile iron. The surface roughness of modified sample and original sample, modified layer depth, micro-hardness distribution and abrasion resistance were measured. On the condition of ensuring surface roughness (not melting or little melting), the modified layer depth increased with pulse time. The wear resistance experiments showed that the wear resistance of ductile iron modified by pulse laser was increased by 1.8 times.

关 键 词：材料表面与界面 表面强化 脉冲激光 球墨铸铁 

分 类 号：TG665[金属学及工艺—金属切削加工及机床]