DEFORMATION AND FRACTURE BEHAVIOUR OF Al-Li ALLOY UNDER SLOW TENSILE RATE CONDITION

Acta Metall Sin

1993, Vol. 29

Issue (10): 40-45 DOI:

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DEFORMATION AND FRACTURE BEHAVIOUR OF Al-Li ALLOY UNDER SLOW TENSILE RATE CONDITION

ZHANG Yun;WANG Zhongguang;LIU Yulin;ZHAO Hongen;HU Zhuangqi;YUAN Zhengxing Institute of Metal Research; Academia Sinica; Shenyang Shenyang University of Technology

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ZHANG Yun;WANG Zhongguang;LIU Yulin;ZHAO Hongen;HU Zhuangqi;YUAN Zhengxing Institute of Metal Research; Academia Sinica; Shenyang Shenyang University of Technology. DEFORMATION AND FRACTURE BEHAVIOUR OF Al-Li ALLOY UNDER SLOW TENSILE RATE CONDITION. Acta Metall Sin, 1993, 29(10): 40-45.

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Abstract The deformation and fracture behavior of an Al-Li alloy have been investi-gated under slow tensile loading. The relatioship between stress intensity factor and crackgrowth rate has been determined for various aging conditions of the alloy. Plasticdeformation mechanism, microfracture mode and crack growth resistance are different forvarious aging temperatures due to various microstructures. It was indicated that the strainlocalization was the reason for low plastisity and the strain localization closely related to thestate of grain boundaries. The relation between macroproperties and microdeformation char-acteristics has also been determined.

Key words: Al-Li alloy deformation fracture

Received: 18 October 1993

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https://www.ams.org.cn/EN/ OR https://www.ams.org.cn/EN/Y1993/V29/I10/40

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