| Al—Li—Cu—Mg—Zr合金的断裂形态和断裂韧性 |
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| 引用本文： | 周自强,何晓.Al—Li—Cu—Mg—Zr合金的断裂形态和断裂韧性[J].北京航空航天大学学报,1991(2):14-19. |
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| 作者姓名： | 周自强 何晓 |
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| 作者单位： | 北京航空航天大学材料科学与工程系
(周自强，何晓，季道馨)，北京航空航天大学材料科学与工程系(陈昌麒) |
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| 摘 要： | 采用单边缺口三点弯曲试样测定了Al-Li-Cu-Mg-Zr合金的断裂韧性。还测量了拉伸性能和硬度。着重分析了裂纹形态和断口形貌。讨论了裂纹偏斜和分叉对裂纹尖端的屏蔽作用,分别计算了本征的和非本征的断裂韧性值。
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| 关 键 词： | 铝锂合金 断裂 韧性 裂纹偏斜 |
FRACTURE FEATURES AND TOUGHNESS OF Al-Li-Cu-Mg-Zr ALLOYS |
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| Zhou Ziqiang He Xiao Ji Daoxin Chen Changqi.FRACTURE FEATURES AND TOUGHNESS OF Al-Li-Cu-Mg-Zr ALLOYS[J].Journal of Beijing University of Aeronautics and Astronautics,1991(2):14-19. |
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| Authors: | Zhou Ziqiang He Xiao Ji Daoxin Chen Changqi |
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| Institution: | Dept. of Mater. Sci. and Eng. |
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| Abstract: | Fracture toughness of Al-Li-Cu-Mg-Zr alloys were determined with single-edge notched beam specimens. Tensile properties and hardness also were measured. Particular attention has been focused on the crack path profiles and fracture surfaces. Crack deflection and bifurcation induced crack tip shielding were discussed. The intrinsic and extrinsic fracture toughness values were calculated respectively |
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| Keywords: | Aluminum-Lithium alloy fracture toughness crack deflection shear localization |
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