【摘要】 在较低激光功率(40~170 W)和两种扫描速度(10 mm/s,5 mm/s)辐照条件下,研究了CO2激光辐照工艺对非晶Fe73.5Cu1Nb3Si13.5B9合金晶化行为的影响.用穆斯堡尔谱(MS)技术对原始态和晶化后样品进行了结构分析.研究发现:非晶Fe73.5Cu1Nb3Si13.5B9表面产生了少量晶化,晶化相为Fe-Si结构;晶化量在2.1%~3.57%内,随激光功率的增加而增加.当激光功率较低时,低扫描速度对晶化的促进作用大于激光功率的作用;但是,随激光功率增大,速度的影响变弱.表面微观硬度随激光功率的增加而增加.更多还原

【Abstract】 The effects of the CO₂ laser radiation technology on the Fe_73.5Cu₁Nb₃Si_13.5B₉ amorphous soft magnetic alloy crystallization behavior under the radiation condition when the laser power was lower（40¹70W） and the laser radiated respectively at two speeds（10mm/s,5mm/s） are studied.The original and the crystallized samples have been analyzed with the aid of Mssbauer spectra.It is discovered that small amount of crystallization occurred on the surface of the Fe_73.5Cu₁Nb₃Si_13.5B₉ amorphous soft magnetic alloy,the crystallization phase being Fe-Si structure;the crystallization amounts to 2.1%³.57%,and the amount of crystallization increases with the increase of laser power.When the laser power is lower,the low speed has more effect on the crystallization promotion than the laser power;however,with the increase of the laser power,the effect of speed becomes weaker.The surface micro-hardness increases with the increase of laser power.更多还原