Effect of Structure on the Mechanical Properties of the Metal of Welded Joints of Aluminum Alloys of the Al-Cu-Li System

被引：2
|
作者：
Markashova, L. I. [1 ]
Kushnareva, O. S. [1 ]
机构：
[1] Ukrainian Natl Acad Sci, EO Paton Inst Elect Welding, Kiev, Ukraine
来源：
MATERIALS SCIENCE | 2014年 / 49卷 / 05期
关键词：
aluminum alloys; welded joints; scandium; heat treatment; structural phase state; substructure; density of dislocations; operating properties;
D O I：
10.1007/s11003-014-9662-2
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The mechanical properties of welded joints of complexly doped 1460 alloy of the Al-Cu-Li system prepared by the argon-arc welding (Sv1201 and Sv1201 + 0.5 % Sc filler wires) are studied by using a complex experimental-analytic approach. The influence of the structural factors (chemical and phase compositions; grain, subgrain, and dislocation structures) on the mechanical properties (strength, plasticity, and crack resistance) of the weld metal of these joints is revealed. The dependences of the concentration of internal stresses and the mechanism of their relaxation in the case of doping of the metal with scandium on the structural phase state of the metal are established.
引用
收藏
页码：681 / 687
页数：7
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