| 全层状TiAl基合金断裂过程的进一步研究 |
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| 引用本文： | 曹睿,朱浩,雷明霞,张继,陈剑虹.全层状TiAl基合金断裂过程的进一步研究[J].兰州理工大学学报,2005,31(5):1-4. |
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| 作者姓名： | 曹睿 朱浩 雷明霞 张继 陈剑虹 |
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| 作者单位： | [1]兰州理工大学材料科学与工程学院,甘肃兰州730050 [2]兰州理工大学甘肃省有色金属新材料国家重点实验室,甘肃兰州730050 [3]北京钢铁研究总院,北京100081 |
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| 基金项目： | 国家自然科学基金（50471109） |
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| 摘 要： | 通过对层状TiAl基合金进行拉伸卸载试验及拉伸试验，同时通过断口分析，研究了全层状TiAl基合金平板拉伸试验的断裂过程．结合宏观试验结果与断口分析发现，随着预损伤程度的增加，裂纹面密度增大；平板拉伸直接断裂试样的断裂过程与拉伸一卸载后拉断试样的断裂过程一致，单位面积断裂功基本不变．这说明预损伤并不影响这种材料的断裂过程和最终的断裂性能．
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| 关 键 词： | 层状TiAl基合金 拉伸卸载 预损伤 裂纹面密度 单位面积断裂功 |
| 文章编号： | 1000-5889(2005)05-0001-04 |
| 收稿时间： | 2005-01-18 |
| 修稿时间： | 2005年1月18日 |
Further study of fracture process of fully-lamellar titanium aluminum alloys |
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| CAO Rui, ZHU Hao, LEI Ming-xia, ZHANG Jia, CHEN Jian-hong.Further study of fracture process of fully-lamellar titanium aluminum alloys[J].Journal of Lanzhou University of Technology,2005,31(5):1-4. |
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| Authors: | CAO Rui ZHU Hao LEI Ming-xia ZHANG Jia CHEN Jian-hong |
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| Institution: | 1. College of Materials Science and Engineering, Lanzhou Univ. of Tech., Lanzhou 730050, China; 2. State Key Lab. of Advanced New Non-ferrous Materials, Gansu Province, Lanzhou Univ. of Tech. , Lanzhou 730050, China; 3. Beijing Central Steel Research Institute, Beijing 100081, China |
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| Abstract: | The facture process of fully-lamellar TiA1 alloys is investigated by tensile-unloading test and tensile test, and analysis of fracture surface. It is found that the areal density of cracks increases with the increasing of the degree of pre-damage, and the fracture process of plate tensile fracture is consistent with that of tensile-unloading-fracture, the fracture energy per unit area remains basically unchanged, It means that pre-damage has no effect on the fracture process and final fracture properties of lamellar titanium aluminum alloy. |
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| Keywords: | lamellar titanium aluminum alloys tensile-unloading pre-damage crack's areal density fracture energy pre unit area |
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