摘要
作者采用高功率连续CO_2激光束处理柴油机缸套外壁,使其表面形成一层极细的淬火马氏体或莱氏体组织。快速穴蚀试验和柴油机装机考核试验均表明,缸套外壁生成的淬火马氏体和莱氏体组织具有较好的抗穴蚀阻抗,它与材料的硬度及材料组织的晶粒尺寸等因素有关。
To treat by CW CO_2 laser on the outer wall of 180 diesel cylinder, a
fine structure layer of quenched martensite or ledeburite may be formed. This layer
tested better in resistance to cavitatiin erosion during examination of either accele-
rated cavitation erosion or diesel engine assembly. Experimental results show that
the improvement on the resistance is dependent on the hardness change over the wall
and the grain size of steel structure.
出处
《金属学报》
SCIE
EI
CAS
CSCD
北大核心
1991年第3期B176-B180,共5页
Acta Metallurgica Sinica
关键词
激光
热处理
缸套
穴蚀
laser treatment
cavitation erosion
cylinder outer wall
