在25℃和-40℃环境下的3种航空材料的疲劳品质研究

ACTA AERONAUTICAET ASTRONAUTICA SINICA ›› 2006, Vol. 27 ›› Issue (6): 1127-1129.

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Study on Fatigue Behavior of Three Kinds of Aeronautical Materials at 25℃ and -40℃

ZHANG Fu-ze¹, YE Xu-bin², SONG Jun², YAN Yong¹, GUO Hong-quan²

1. Beijing Aeronautical Technology Research Center, Beijing 100076;2. Beijing Institute of Aeronautical Materials, Beijing 100095

Received:2005-07-15 Revised:2005-11-30 Online:2006-12-25 Published:2006-12-25

Abstract

Abstract: To study the fatigue behavior of aeronautical materials at low temerature and room temperature, the S-N curves of LY12CZ, LC4CS aluminium alloys and 30CrMnSiNi2A steel were tested at -40℃ and 25℃ separately. From the results, it can be found that the S-N curves of these materials at -40℃ are higher than those at 25℃; Compared with the fatigue life at different temperatues in the middle life region, the crack initial life at -40℃ is three times higher than those at 25℃. All the results show that the low temperature invironment is helpful to improve the crack intial life.

Key words: fatigue life, S-N curve, low temperature environment

CLC Number:

V215.5

ZHANG Fu-ze;YE Xu-bin;SONG Jun;YAN Yong;GUO Hong-quan. Study on Fatigue Behavior of Three Kinds of Aeronautical Materials at 25℃ and -40℃[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2006, 27(6): 1127-1129.

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Study on Fatigue Behavior of Three Kinds of Aeronautical Materials at 25℃ and -40℃

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