摘要
利用光学显微镜(OM)、扫描电镜(SEM)、能谱分析(EDS)、透射电镜(TEM)和EBSD,研究自制的X2A66合金均匀化处理过程中主要合金元素分布和显微组织演化。结果表明:合金经均匀化处理能够有效消减枝晶偏析组织,大部分非平衡共晶相以及金属间化合物溶解到基体中,试验结果与均匀化动力学分析计算结果一致;此外,双级均匀化处理能够有效地诱导Al_3Zr粒子均匀析出,在后续处理过程中降低合金的再结晶程度,提高合金的力学性能。
The microsttucture evolution of the X2A66 alloy during homogenization was investigated with the help of the opticalmicroscopy （OM） , scanning electron microscopy （SEM） , energy dispersive spectrometry （EDS） , electron backscatteringdiffraction （EBSD） and transmission electron microscopy （TEM）. The results show that the dendriles segregation is reduced andmost of the nonequilibrium eutectic phase and intermetallics dissolve into e （AI） matrix with the homogenization treatmentparameter optimization. The results of iiomogenization can he described by homogenization kinetic analysis, which agree wellwith experimental observation. Moiover, the double-stage homogenization can improve the precipitation behavior of AIZrparticles, reduce the recrystallization degree and strengthen the mechanical properties of X2A66 alloy during the suhsequenttreatment process.
作者
江茫
徐进军
JIANG Mang,XU Jinjun(Aviation Electromechanical Equipment Maintenance Department, Airforce Aviation Repair Institute of Technology, Changsha 410124, Chin)
出处
《兵器材料科学与工程》
CAS
CSCD
北大核心
2018年第2期47-52,共6页
Ordnance Material Science and Engineering
基金
湖南省教育厅科学研究项目(17C0013)
空军航空维修技术学院院级课题(YD1702)
关键词
X2A66合金
均匀化处理
再结晶
力学性能
X2A66 alloy
homogenization treatment
recTstallizatinn
mechanical pn}perties
