Aluminum Alloy Conductor Texture Control
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Solution Overview
Problem
Aluminum alloy conductors used in electrical wiring for movable bodies face challenges in balancing electrical conductivity, resistance to bending fatigue, and handleability, with existing solutions either compromising on conductivity or yield strength, leading to durability and reliability issues.
Innovation Solution
An aluminum alloy conductor with a specific texture and composition, featuring a grain size of 1 to 30 µm and an area ratio of grains with a (100) plane parallel to the wire-drawing direction of 20% or more, along with an alloy composition of Fe, Mg, Si, and Cu, is produced through controlled heat treatment and working processes to achieve optimal yield strength and fatigue resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the strength of aluminum conductor is increased to improve resistance to bending fatigue, then durability is improved, but handleability deteriorates due to excessive force required during installation
Solution Approach 1:
The patent applies parameter changes by precisely controlling the grain size (1-30 μm) and texture composition (area ratio of grains with (100) plane parallel to wire-drawing direction of 20% or more) of the aluminum alloy conductor. These microstructural parameter changes enable the material to achieve optimal balance between strength (0.2% proof stress of 35-80 MPa) and ductility, providing both resistance to bending fatigue and good handleability during installation
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution provides an aluminum alloy conductor with appropriate yield strength, excellent electrical conductivity, and enhanced resistance to bending fatigue, ensuring improved handleability and durability for applications in movable bodies like automobiles and aircraft.
Implementation Method 1
it is considered that as a material is higher in mechanical strength, it is better in fatigue property
Implementation Method 2
produced by controlling the production conditions, such as those in the heat treatment of the aluminum alloy and working degree before the heat treatment
Data Source
Figure 1~2
AI summary
[Problem to solve] The present invention is contemplated for providing an aluminum alloy conductor, which is excellent in electrical conductivity and resistance to bending fatigue, and which has an appropriate yield strength with good handleability. [Means to solve] An aluminum alloy conductor, which has a texture in which an area ratio of grains each having a (100) plane and being positioned in parallel to a cross-section vertical to a wire-drawing direction of a wire is 20% or more, and which has a grain size of 1 to 30 µm on the cross-section vertical to the wire-drawing direction of the wire.