在25℃和-40℃环境下的三种航空材料的裂纹扩展品质研究

ACTA AERONAUTICAET ASTRONAUTICA SINICA ›› 2007, Vol. 28 ›› Issue (3): 593-595.

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Study on Crack Growth Behaviors of Three Kinds of Aeronautical Materials at 25℃ and -40℃

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

1Beijing Aeronautical Technology Research Center 2Beijing Institute of Aeronautical Materials

Received:2006-03-02 Revised:2006-10-28 Online:2007-05-10 Published:2007-05-10
Contact: YE Xubin²

Abstract

Abstract:

To study the crack growth behaviors of areonautical materials at low temperature and room temperature, the a-N curves and da/dN △K curves of LY12CZ， LC4CS aluminium alloys and 30CrMnSiNi2A steel are tested at -40℃ and 25℃ separately.Through the results, it can be found that the a-N curves and the da/dN △K curves of these materials at -40℃ are both higher than those of at 25℃.

Key words: crack , growth, , metallic , material, , low , temperature, , a-Ncurve, , da/dN △K curve

CLC Number:

V215.5

ZHANG Fu-ze;YE Xu-bin;SONG Jun;GUO Hong-quan. Study on Crack Growth Behaviors of Three Kinds of Aeronautical Materials at 25℃ and -40℃[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2007, 28(3): 593-595.

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Study on Crack Growth Behaviors of Three Kinds of Aeronautical Materials at 25℃ and -40℃

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