Annealing twins are synthesised in high purity aluminium processed by dynamic equal channel angular pressing during annealing. Annealing twins and recrystallised grains encircling the twins have specific crystallographic orientation relationships with the deformed matrix grains: approximately 35°–50°<110> for the twins and 30°–45°<100> for the recrystallised grains. Stored energy during dynamic pressing, and the crystallographic orientation between annealing twins and the deformed matrix, strongly affect twin growth during annealing.

中文翻译：

---

动态等通道角挤压加工的高纯铝退火孪晶

退火孪晶是由高纯铝在退火过程中通过动态等通道角挤压加工而成的。退火孪晶和环绕孪晶的再结晶晶粒与变形的基体晶粒具有特定的晶体取向关系：孪晶约为 35°–50°<110>，再结晶晶粒约为 30°–45°<100>。动态压制过程中储存的能量，以及退火孪晶和变形基体之间的晶体取向，强烈影响退火过程中孪晶的生长。