用透射电镜高温原位观察了β黄铜中贝氏体的应力诱发生长形态，并根据晶体学分析否定了这些形态为感应形核，发现了剪切应力场存在的证据．在初生贝氏体中发现存在层错亚结构．结果支持贝氏体的切变机制． The stress-induced growth morphology of bainite in β-brass was observed in situ at high temperature by transmission electron microscopy. According to the crystallographic analysis, these morphologies were negated for the induction nucleation and evidence of the existence of shear stress field was found. Found in the primary bainite layer fault sub-structure is found. The results support the bainite shear mechanism.