采用TEM结合SEM和XRD对工业纯钛喷丸强化后显微组织结构、断口形貌、残余应力进行分析, 研究了影响疲劳性能的3个因素即: 组织、应力、粗糙度. 结果发现: 孪生是六方合金的塑性变形主要形式, 喷丸强化表层形变组织由孪晶和变形带构成, 表层孪晶间强烈交互作用, 可造成显微损伤; 表层残余应力在疲劳后发生明显松驰, 有益贡献也相应的降低; 表面粗糙度提高, 具有负的影响.
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