摘要
研究了镍基合金的组织、相组成,进行了镍基合金表面堆焊工艺试验,研究了堆焊层宏观组织及微观组织的分布,并进行了堆焊层及界面区域的显微硬度分布测试。结果表明:提出的镍基合金由γ-(N i,Fe),FeN i3,N i和少量的Fe2C组成,堆焊层组织分布均匀,无开裂、气孔等缺陷,显微硬度从174HV0.2提高到780HV0.2。
On the basis,overlaying welding experiment was carried out and the macrostructure and microstructure distribution were analyzed.Consequently,the micro hardness distribution was detected.The results show that the proposed nickel base alloy consists of γ-（Ni,Fe）,FeNi3,Ni and little Fe2C.The microstructure of clad distributed homogeneously without gas porosity and cracking.The micro hardness is increased from 174HV0.2 to 780HV0.2.
出处
《航空材料学报》
EI
CAS
CSCD
北大核心
2011年第5期29-33,共5页
Journal of Aeronautical Materials
基金
上海市自然科学基金(10ZR1412900)
上海教委重点学科(J51403)
上海教委重点学科(J51402)
关键词
镍基合金
堆焊层
线膨胀系数
显微组织
nickel base alloy
clad
linear expansion coefficient
microstructure
