单晶铝在拉压循环过程中形成的两种位错组态与成因

TWO KINDS OF DISLOCATION PATTERNS AND THE FORMING REASONS DURING THE PUSH PULL FATIGUE PROCESS FOR Al SINGLE CRYSTALS

研究了［１１０］和［１００］取向高纯铝单晶在６×１０－４拉压疲劳应变振幅条件下的应力σｍ和内耗Ｑ－１的变化，对不同阶段的位错组态作了详细的透射电子显微镜观察。

Variations of the stress σ m and internal friction Q -1 versus cyclic number N under push pull fatigue strain ε t=6×10 -4 for and Al single crystals were measured. The dislocation configuration at different stages of fatigue was observed by TEM. A elucidation was given with the view of dislocation slip geometry.