Suppression of twin deformation by ordered nano-scale precipitate and its application to room temperature forming

在较高的温度和较高的压下率下高速轧制促进了动态再结晶，而在较低的压下率和较低的温度下一次高速终轧则诱导了动态析出的动态再结晶，提供的晶粒尺寸小于2μm，从而使轧制后的试件具有与汽车覆盖件用铝合金相近的各向同性拉伸性能和良好的室温弯曲性能。

Dynamic recrystallization was promoted by high speed rolling at higher temperature and higher reduction ratio and furthermore, dynamic recrystallization with the dynamic precipitation was induced by 1-pass high speed finish rolling at lower temperature and lower reduction ratio, providing the grain size less than 2μm. As a result, the as-rolled sample exhibits almost isotropic and comparable tensile properties with Al alloy used for automotive body panel materials, and a good room temperature bending characteristics after annealing.