1. The presence of grain boundary allotriomorphic ferrite can increase the compatible deformation capability of duplex microstructure, improve the crack initiation energy under impact loading;
适量仿晶界型铁素体的存在增加了复相组织的协调变形能力，提高了裂纹形成功；
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2. The presence of grain boundary allotriomorphic ferrite can increase the compatible deformation capability of duplex microstructure, improve the crack initiation energy under impact loading;
