THRESHOLD OF SHORT FATIGUE CRACK FOR Al-Li ALLOY 8090

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Acta Metallurgica Sinica (English Letters) ›› 1991, Vol. 4 ›› Issue (2): 135-138.

• Research paper • Previous Articles Next Articles

THRESHOLD OF SHORT FATIGUE CRACK FOR Al-Li ALLOY 8090

CHEN Zheng Northwestern Polytechnical University,Xi′an,China Lab.No.401,Northwestern Polytechnical University,Xi′an 710072

Received:1991-04-25 Revised:1991-04-25 Online:1991-04-25 Published:2009-10-10

Abstract

Abstract: Threshold of fatigue for short through cracks for Al-Li alloy 8090 was evaluated to be lower than that of long cracks,and to decrease with the shortening of the crack length.The correla- tion among the threshold,crack wake,and crack tip shielding of the short fatigue cracks was discussed.The super demarcation length and lowest theoretical threshold of short through fa- tigue cracks were presented.

Key words: Al-Li alloy, short fatigue crack, threshold, crack closure effect, crack tip shielding

CHEN Zheng Northwestern Polytechnical University,Xi′an,China Lab.No.401,Northwestern Polytechnical University,Xi′an 710072. THRESHOLD OF SHORT FATIGUE CRACK FOR Al-Li ALLOY 8090[J]. Acta Metallurgica Sinica (English Letters), 1991, 4(2): 135-138.

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THRESHOLD OF SHORT FATIGUE CRACK FOR Al-Li ALLOY 8090

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