| High cycle fatigue and fracture behavior of 2124-T851 aluminum alloy |
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| 作者姓名： | 李雪 尹志民 聂波 钟利 潘清林 姜锋 |
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| 作者单位： | [1]School of Materials Science and Engineering, Central South University, Changsha 410083, China [2]Northeast Light Alloy Co.Ltd., Harbin 150060, China |
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| 基金项目： | Project （2005CB623705） supported by the National Basic Research Program of China |
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| 摘 要： |
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| 关 键 词： | 疲劳强度 破裂强度 压力 金属材料 |
| 收稿时间： | 2007-07-15 |
| 修稿时间： | 2007-09-10 |
High cycle fatigue and fracture behavior of 2124-T851 aluminum alloy |
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| LIXue,YINZhi-min,NIEBo, ZHNG Li, PAN Qing-lin, JIANG Feng.High cycle fatigue and fracture behavior of 2124-T851 aluminum alloy[J].Transactions of Nonferrous Metals Society of China,2007,17(A01):295-299. |
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| Authors: | LIXue YINZhi-min NIEBo ZHNG Li PAN Qing-lin JIANG Feng |
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| Affiliation: | LIXue,YINZhi-min,NIEBo, ZH0NG Li, PAN Qing-lin, JIANG Feng |
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| Abstract: | The high cycle fatigue properties and fracture behavior of 2124-T851 aluminum alloy were investigated roundly, including the fatigue crack growth rate, fracture toughness and fatigue S--N curve. Furthermore, the fatigue crack growth rate was analyzed by fitting the curves. And the microstructure of the alloy was studied using by optical microscopy, transmission electron microscopy and X-ray diffractometry, scanning electron microscop1/2 The results show that the fatigue strength and the fracture toughness of 2124-T851 thick plate are 243 MPa and 29.6 MPa.m at room temperature and R=0. 1, respectively. At high cycle fatigue condition, the characteristics of fatigue facture were observed obviously. And the higher the stress amplitude, the wider the space between the fatigue striations, the faster the rate of fatigue crack developing and going into the intermittent fracture area and the greater the ratio between the intermittent fracture area and the whole fracture area. |
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| Keywords: | fatigue strength fracture toughness fatigue fractograph 2124 aluminum alloy |
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