对单相体心立方近β钛合金在不同加载应力以及循环周次下进行压缩疲劳试验, 对循环过程中的范性应变机制进行分析, 通过研究滑移模式、显微组织演化等对早期微裂纹萌生的影响以及观察疲劳前后位错组态的演化, 分析了循环形变特征与表面滑移模式之间的内在联系。结果表明: 单相近β钛合金经纯压缩循环形变后出现出典型的平面滑移特征以及表面应力集中现象, 循环形变后的位错湮灭、退孪晶和孪晶界结构简化造成的局部应力改变是导致应力集中滑移带出现以及平面滑移机制的重要因素。
所属栏目
试验研究国家自然科学基金资助项目(51201054); 中国博士后基金资助项目(2012M511400); 教育部科学研究重大项目(311025); 教育部博士点基金新教师类项目(20120111120030)
收稿日期
2012/12/262014/1/25
作者单位
黄俊:合肥工业大学材料科学与工程学院, 合肥 230009多伦多大学材料科学与工程系, 多伦多 M5S 3E4
李慧:合肥工业大学材料科学与工程学院, 合肥 230009
王执锐:多伦多大学材料科学与工程系, 多伦多 M5S 3E4
吴玉程:合肥工业大学材料科学与工程学院, 合肥 230009安徽省有色金属材料与加工工程实验室, 合肥 230009
备注
黄俊(1983-), 女, 安徽安庆人, 副教授, 博士。
引用该论文:
HUANG Jun,LI Hui,WANG Zhi-rui,WU Yu-cheng.Planar Slip Behavior of Near-β Titanium Alloy during Cyclic Deformation Process[J].Materials for mechancial engineering,2014,38(3):5～9
黄俊,李慧,王执锐,吴玉程.体心立方近β钛合金循环形变中的平面滑移行为[J].机械工程材料,2014,38(3):5～9
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