利用锻造镦粗工艺制备高横向塑性纯钼棒，检测其在退火过程中横向弯曲性能和组织结构，并利用SEM对其断口形貌进行分析。结果表明：镦态......

Due to the non-uniform nature of crack advance, when a cleavage front encounters a high-angle grain boundary,instead of ......