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CLEAVAGE RUPTURE OF TCll Ti ALLOY UNDER FATIGUE-CREEP INTERACTION |
ZHOU Yu;ZHOU Yigang;YU Hanqing Northwestern Polytechnical University; Xi'an |
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Cite this article:
ZHOU Yu;ZHOU Yigang;YU Hanqing Northwestern Polytechnical University; Xi'an. CLEAVAGE RUPTURE OF TCll Ti ALLOY UNDER FATIGUE-CREEP INTERACTION. Acta Metall Sin, 1992, 28(3): 38-41.
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Abstract The cleavage rupture behaviour of the TCll Ti alloy with variousmicrostructures, i.e., equiaxed, duplex and interweaving, has been studied under fatigue--creepinteraction at 520℃. It was found to be not only related to the rate of creep void initiating, butalso controlled by the creep strain accumulation on holding under tension test and stress state atcrack--tip. This seem to be combinably affected by both value of critic void initiating strain andparameter, V_(GC), of critic void growth.
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Received: 18 March 1992
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1 Song Z, Hoeppner D W. Int J Fatigue, 1988; 10: 211 2 Powell B E, Duggan T V. Int J Fatigue, 1987; 9: 195 3 周义刚,张宝昌.航空学报,1989;10:A60 4 郑长卿,雷登.韧性断裂细观力学的初步研究及其应用.西安:西北工业大学出版社,1988:127 |
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