最后还给出了相应的表层组织结构分析和疲劳寿命试验结果。
At last, the corresponding analysis of surface structure and testing of fatigue life were given.
喷丸表面微观形貌为表层组织剧烈变形、晶格扭曲和双向交滑移；
And the shot peening surface micro morphology is acute deformation of surface microstructure, lattice distortion and bidirectional cross-slip;
研究结果表明，目前出现的冷镦开裂是由盘条表层组织异常所致。
The results showed that the cold heading cracking was due to abnormal surface microstructures of steel. The abnormal surface microstructures have three kinds of behavior.
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