overaged

Nonuniform deformation and fracture of overaged Al-Cu polycrystal

铝铜过时效多晶体中的变形不均匀性和断裂

The results indicate that on the condition of peak aging, the materials show higher resistant to creep than those overaged materials do.

结果发现：峰时效下，合金的蠕变抗力强于过时效状态下材料的蠕变抗力。

Shear band in overaged al-2. 45wt% cu alloy polycrystal

铝铜合金过时效多晶体中的剪切带

The recrystallization textures consist of cube orientation rotated by 20 ° round normal direction ( ND) and { 011} 〈 122 〉 orientation for samples overaged and then cold rolled.

冷轧前进行过时效处理，其再结晶织构主要由绕法向旋转了20°的立方取向（Cube+ND20）和{011}〈122〉取向构成；

When the alloy is overaged, the properties are reduced due to the precipitation of θ' and T2 phases.

当T1和S′相析出时，强度和延伸率都提高，过时效后，由于θ′和T2相析出，性能下降。