| TA15钛合金两类组织对疲劳性能和断裂韧度的影响 |
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| 引用本文： | 张庆玲,李兴无.TA15钛合金两类组织对疲劳性能和断裂韧度的影响[J].材料工程,2007(7):3-5. |
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| 作者姓名： | 张庆玲 李兴无 |
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| 作者单位： | 北京航空材料研究院,北京,100095 |
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| 摘 要： | 研究了TA15钛合金片状和双态两种典型组织对疲劳性能和断裂韧度的影响,结果表明:在S-N曲线的高应力区,双态组织的疲劳强度高于片状组织;在低应力区,情况则相反,且片状组织的疲劳极限(656MPa)高于双态组织(565MPa).片状组织的疲劳裂纹扩展速率低于双态组织,且断裂韧度K1C高于双态组织,即片状组织的损伤容限性能优于双态组织.
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| 关 键 词： | 钛合金 片状组织 双态组织 疲劳性能 断裂韧度 钛合金 片状组织 疲劳性能 断裂韧度 影响 Titanium Alloy Fracture Toughness Fatigue Properties Structure 损伤容限性能 疲劳裂纹扩展速率 疲劳极限 情况 高应力区 疲劳强度 双态组织 曲线 结果 研究 |
| 文章编号： | 1001-4381（2007）07-0003-03 |
| 修稿时间： | 2007-04-12 |
Effect of Structure on Fatigue Properties and Fracture Toughness for TA15 Titanium Alloy |
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| ZHANG Qing-ling,LI Xing-wu.Effect of Structure on Fatigue Properties and Fracture Toughness for TA15 Titanium Alloy[J].Journal of Materials Engineering,2007(7):3-5. |
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| Authors: | ZHANG Qing-ling LI Xing-wu |
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| Affiliation: | Beijing Institute of Aeronautical Materials, Beijing 100095, China |
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| Abstract: | Effect of lamellar and bi-modal structure on fatigue properties and fracture toughness have been investigated for TA15 titanium alloy. The results show that fatigue strength of bi-modal structure is higher than lamellar structure in the low cycle region, however the fatigue limit of lamellar structure is higher than bi-modal structure in the high cycle. The damage tolerance properties of lamellar are better than bi-modal structure, i.e. fracture toughness is higher and crack growth rate is lower of lamellar structure. |
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| Keywords: | titanium alloy lamellar structure bi-modal structure fatigue properties fracture toughness |
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