| 两种组织TC11钛合金薄板弯曲疲劳性能的研究 |
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| 引用本文： | 杜勤,张滨,郭新虎.两种组织TC11钛合金薄板弯曲疲劳性能的研究[J].中国材料科技与设备,2011(6):53-55. |
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| 作者姓名： | 杜勤 张滨 郭新虎 |
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| 作者单位： | [1]北京北方车辆集团有限公司北京北方信恒计量检测技术研究所,北京100072 [2]东北大学材料与冶金学院,辽宁沈阳110819 [3]宝钛集团有限公司,陕西宝鸡721014 |
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| 摘 要： | 本研究选取了具有（α＋β）等轴组织和α／β粗片层组织的TCll钛合金作为研究对象，采用研究了TCll合金薄板样品在恒总应变幅控制下的弯曲疲劳性能及其损伤行为，通过对疲劳开裂路径和断裂的观察与表征，探讨了疲劳损伤与组织结构间的关系。研究发现，恒总应变幅控制下的等轴组织TCll钛合金薄板的弯曲疲劳性能明显的高于粗片层组织合金。等轴组织合金的疲劳裂纹沿α相中的滑移带萌生并扩展，片层组织样品疲劳裂纹沿着α相或与片层垂直的方向扩展。
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| 关 键 词： | TC11钛合金 弯曲疲劳性能 疲劳开裂 |
Two Kinds of Organization TCll Titanium Alloy Thin Steel Plate Bending Fatigue Performance Research |
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| Affiliation: | DU Qin , ZHANG Bin, GUO Xin--hu (1. Beijing north Xinheng Institute of Measuring and Testing Technology Beijing north vehicle group corporation, Beijing, 100072, China;2. The Material and Metallurgical college Northeastern University, Liaoning, Shenyang, 110819, China; 3. BAOTi Group, Shanxi, Baoji, 721014, China) |
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| Abstract: | This study selected a （α＋β） equiaxed organizations and α / β coarse lamellar TCll titanium alloy for the study, the use of the TCll alloy sheet sample at a constant total strain amplitude--controlled bending fatigue and the damage behavior, fatigue crack path and through the observation and characterization of fracture, fatigue, loss of a relationship between the structure and organization. The study found that under constant total strain amplitude control equiaxed organization TCll titanium alloy sheet bending fatigue performance significantly higher than the coarse lamellar alloy. Equiaxed alloys organization along the α phase of fatigue crack initiation and expansion of slip bands, lamellar samples of fatigue cracks along the lamellar α phase or vertical direction with the expansion. |
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| Keywords: | TCll titanium alloy Bending fatigue Fatigue cracking |
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