Anisotropy of the Cyclic Crack Resistance of Aluminum Alloys After Long-Term Operation

被引：0
|
作者：
Andreiko, I. M. [1 ]
Holovatyuk, Yu. V. [1 ]
Ostash, O. P. [1 ]
Semenets', O. I. [2 ]
Koval'chuk, L. B. [1 ]
机构：
[1] Ukrainian Natl Acad Sci, Karpenko Physicomech Inst, Lvov, Ukraine
[2] ANTONOV State Enterprise, Kiev, Ukraine
来源：
MATERIALS SCIENCE | 2016年 / 52卷 / 01期
关键词：
aluminum alloys; in-service degradation; cyclic crack resistance; anisotropy;
D O I：
10.1007/s11003-016-9929-x
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We study the characteristics of cyclic crack resistance of specimens of D16ATNV (2024-T3-type) and V95T1 (7075-T6-type) aluminum alloys cut out from different zones of the wing of an AN-12 aircraft after 40 yr of operation along (LT-specimens) and across (TL-specimens) the direction of forge-rolling of skin sheets. It is shown that, as compared with the as-delivered state of these alloys, the D16ATNV and V95T1 aluminum alloys after long-term operation are characterized by the "reverse anisotropy" when the growth rate of fatigue macrocracks in the LT-specimens is higher than in the TL-specimens. Depending on the Al-Cu-Mg alloying system (D16-type alloy) or the Al-Zn-Mg-Cu system (V95-type alloy), this phenomenon can manifest itself in different ways in the tests carried out in air at room and low (- 60A degrees C) temperatures and in corrosive media.
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收藏
页码：83 / 88
页数：6
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