No detectable grain coarsening was revealed near the SBs observed by EBSD and TEM, which means there is no inevitable relationship between formation of SBs and grain coarsening.

• 使用EBSD和TEM对剪切带附近进行观察，没有发现晶粒长大，这意味着剪切带的形成与晶粒粗化没有必然的联系。