不同装配方法对LY12CZ铝合金典型螺接件腐蚀疲劳性能的影响

ACTA AERONAUTICAET ASTRONAUTICA SINICA ›› 2003, Vol. 24 ›› Issue (2): 189-192.

• 论文 • Previous Articles

Effect of Various Fitting Methods on Corrosion Fatigue Properties of LY12CZ Al-Alloy Typical Bolt Joints

LIU Zu-ming^1,2, CAO Ding-guo¹, WU You-jin¹, ZENG Fan-yang¹, LU Li-ju¹

1. China Special Vehicle Research Institute; Jingmen448035; China;2. State Key Laboratory for Powder Metallurgy; Central South University; Chan gsha 410083; China

Received:2002-02-05 Revised:2002-10-28 Online:2003-04-25 Published:2003-04-25

Abstract

Abstract: The corrosion fatigue properties of 3 types of bolt joint structures and 12 kinds of protective measures ofL Y12CZAl-alloy plate typical bolt joints, by an environment accelerated test, are studied,and several protectivemeasures for detail structure improving properties of the L Y12CZ Al-alloy bolt joint structure against environmentcorrosion damage are presented. The results of tests show that anti-corrosion damage and fatigue properties of boltjoints can be generally increased with different degrees if an appropriate protective measure is applied to the detailstructure of bolt joints. Fitting bolt with marine grease and wet fitting bolt with primmer studied in the paper aremore effective measures to improve anti-environment damage properties of the bolt joints. Their fatigue propertiesare increased obviously compared with those not treated in the testing environment . Their fatigue lives are increasedrespectively by 78.36 % and 83.45 %, and their DFR values are increased respectively by 15.09 % and 15.88 %.

Key words: bolt joint, fitting method, corrosion damage, protective measure, fatigue proper ty, Al alloy

CLC Number:

V261

LIU Zu-ming;CAO Ding-guo;WU You-jin;ZENG Fan-yang;LU Li-ju. Effect of Various Fitting Methods on Corrosion Fatigue Properties of LY12CZ Al-Alloy Typical Bolt Joints[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2003, 24(2): 189-192.

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Effect of Various Fitting Methods on Corrosion Fatigue Properties of LY12CZ Al-Alloy Typical Bolt Joints

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