摘要
根据电子束扫描特性,设计电子束熔覆改性试验所用波形,利用该波形进行钛合金表面熔凝和硅化物涂层重熔试验,研究了扫描波形对电子束单道熔覆能量输入均匀性的影响。结果表明,电子束熔覆过程中熔池表面温度场均匀性是扫描波形、电子束束斑品质、扫描频率和工艺参数综合影响的结果,所设计波形可用于电子束熔覆表面改性技术,改性层厚度均匀一致,扫描波形是影响电子束熔覆过程中熔池表面温度场均匀性的关键因素。
The scanning figure was designed in terms of the electron beam（EB） characteristics.Titanium alloy and silicate coating were fabricated by electron beam irradiation with this figure,the effect of scanning figure on energy input uniformity was studied.The temperature field uniformity of the melting point was synthetically influenced by EB scanning figure,EB quality,EB scanning frequency and EB parameter.This scanning figure was suitable for EB cladding process.EB scanning figure is a pivotal factor affecting the temperature field of the re-melting surface in the process of EB modification.
出处
《宇航材料工艺》
CAS
CSCD
北大核心
2010年第3期83-86,共4页
Aerospace Materials & Technology
关键词
电子束重熔
扫描波形
表面熔凝
能量分布
温度场
熔化深度
Electron beam re-melting
Electron beam scanning figure
Surface melting and solidification
Power distribution
Temperature field
Melting depth
