摘要
利用X射线衍射线形分析方法,研究了TiB_2/635lAl和6351Al喷丸形变层的再结晶行为,并得到了两种材料不同温度下等温退火晶块尺寸和显微畸变的变化,通过回归分析,获得了晶块长大激活能和显微畸变松弛激活能,结果表明,两种材料的再结晶激活能均大于纯Al的自扩散激活能,并且复合材料的再结晶激活能略大于铝合金基体的再结晶激活能,增强体阻碍加热过程中晶界和亚晶界的运动影响了复合材料再结晶激活能的提高。
The recrystallization processes of TiB2/6351Al and 6351Al deformation layers introduced by shot peening were investigated. The domain size and microstrain during annealing were calculated from X ray diffraction line profile analysis. The activation energies of the domain growth and microstrain relaxation were obtained by regression analysis. The results showed that the recrystallization activation energies of the both materials are larger than the aluminum self-diffusion activation energy, and the recrystailization activation energy of composite is slightly larger than that of matrix alloy. Due to the movements of grain and subgrain boundaries were impeded during annealing, the improvement of reinforcements on recrystailization activation energy was weakened.
出处
《金属学报》
SCIE
EI
CAS
CSCD
北大核心
2008年第6期671-674,共4页
Acta Metallurgica Sinica
关键词
TiB2/6351Al复合材料
喷丸
等温退火
再结晶激活能
X射线线形分析
TiB2/6351Al composite, shot peening, isothermal annealing, recrystailization activation energy, X-ray diffraction line profile analysis