利用高功率二极管对H13钢表面进行激光硬化  

Surface hardening of H13 steel with high power diode laser

作　　者：蔡红 

机构地区：[1]上海市机械制造工艺研究所有限公司,上海200070

出　　处：《金属热处理》2010年第5期45-48,共4页Heat Treatment of Metals

摘　　要：应用高功率二极管激光器对H13钢进行了表面硬化研究。本试验中除激光功率和扫描速度外,表面加热温度被选作为特定的激光处理参数。试验结果表明,尽管激光设定功率和扫描速度相同,一旦表面处理温度设定不同,获得的表面硬化层的深度、宽度和显微组织有所不同。作为典型试样,其表面加热温度为1400℃时,硬化层的显微组织依次为柱状晶区+等轴晶区+相变硬化区+热影响区+基体。Surface hardening experiment was carried out on H13 steel with a high power diode laser.In addition to laser power and scanning speed,the surface heating temperature was selected as a special processing parameter.The results show that the depth,width,hardness and microstructure of the surface hardened layers are dependent on the surface heating temperature under the same laser power and scanning speed.As a typical example,when the surface heating temperature is 1400 ℃,the microstructure of hardened layer from surface to substrate consists of columnar grain zone,equiaxial grain zone,transformation hardened zone,heat affect zone and substrate.

关 键 词：高功率二极管激光器 H13钢 表面处理 显微组织 

分 类 号：TG156.99[金属学及工艺—热处理]