Heat treatment effect on properties of Al-Mg-Si-Cu 1370 alloy

被引：3
|
作者：
Kolobnev, N. I. [1 ]
Khokhlatova, L. B. [1 ]
Samokhvalov, S. V. [1 ]
Alekseev, A. A. [1 ]
Sbitneva, S. V. [1 ]
Tararaeva, T. I. [1 ]
Popov, V. I. [1 ]
机构：
[1] FSUE All Russian Sci Res Inst Aviat Mat, Moscow, Russia
来源：
ALUMINIUM ALLOYS 2006, PTS 1 AND 2: RESEARCH THROUGH INNOVATION AND TECHNOLOGY | 2006年 / 519-521卷
关键词：
Al-Mg-Si-Cu; 1370; 6056; intercrystalline corrosion; heat treatment;
D O I：
10.4028/www.scientific.net/MSF.519-521.519
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The Russian 1370 Al-Mg-Si-Cu alloy (analogue of 6056) is an advanced material for the skin and stringers of fuselage. However, these alloys are susceptible to the intercrystalline corrosion depending on the heat treatment regimes. The investigations of the effect of heating temperature during the solid solution treatment (530-555)degrees C and quenching rate, ageing regimes and interval between the quenching and ageing on the structure and properties of 1370 alloy sheets were performed. The strengthening beta (Mg2Si)-phase and Q (Al5Cu2Mg8Si6)-phase relationship dependence of the alloy properties is established. Using the dark field electron microscopy which permits to intensify separate diffraction reflexes of strengthening phases the structure of Q-phase precipitates has been studied. Optimization of heat treatment of 1370 alloy sheets provided the combination of fracture toughness characteristic (K-co = 100 MPa root m) high level, the ultimate strength of 400-420 MPa and intercrystalline corrosion no more 100 mu m in depth.
引用
收藏
页码：519 / 524
页数：6
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