Unlock instant, AI-driven research and patent intelligence for your innovation.

Ultrahigh-thermal-conductivity, high-plasticity and moderate-strength aluminum alloy and preparation method thereof

An aluminum alloy and high plasticity technology, applied in the field of aluminum alloys, can solve the problems of reducing the thermal conductivity and low thermal conductivity of the alloy, and achieve the effects of improving the strength and toughness of the alloy, enhancing the casting and flow properties of the alloy, and reducing the tendency of hot cracking.

Active Publication Date: 2021-06-08
UNIV OF SCI & TECH BEIJING
View PDF3 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Al-Si series cast aluminum alloy usually contains more than 6.5wt.% Si, and the casting fluidity is excellent, but the introduction of a large amount of Si and the addition of Cu, Mg, Mn, Zn and other strengthening elements seriously reduce the thermal conductivity of the alloy. Usually lower than 145W / (m.K)

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Ultrahigh-thermal-conductivity, high-plasticity and moderate-strength aluminum alloy and preparation method thereof
  • Ultrahigh-thermal-conductivity, high-plasticity and moderate-strength aluminum alloy and preparation method thereof
  • Ultrahigh-thermal-conductivity, high-plasticity and moderate-strength aluminum alloy and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] An ultra-high thermal conductivity and high plasticity medium-strength aluminum alloy of this embodiment consists of the following specific components and mass percentages: Cu 1.0%, Fe 1.5%, Mg 0.05wt.%, Si 0.1wt.%, Ni 0.01%, Ti 0.002 %, Zn 0.01%, Mn 0.01%, Fe / Cu mass ratio is 1.5, the Si+Ni+Mn+Zn mass fraction is 0.13%, the rest is Al and unavoidable impurities, the total amount of impurity elements is 0.14%;

[0039] The present invention provides a method for preparing the above-mentioned ultra-high thermal conductivity and high plasticity medium-strength aluminum alloy, comprising the following steps:

[0040] (1) Melting: Heat the melting furnace to 720°C, put the aluminum ingot into the melting furnace to melt, after the aluminum ingot is completely melted, add Cu and Fe pure metals or their intermediate alloys into the aluminum melt according to the composition ratio, After it dissolves, add instant silicon, Al-Ni master alloy, Al-Ti master alloy, Al-Mn master al...

Embodiment 2

[0045] An ultra-high thermal conductivity and high plasticity medium-strength aluminum alloy of this embodiment consists of the following specific components and mass percentages: Cu 1.5%, Fe 2.0%, Mg 0.1wt.%, Si 0.15wt.%, Ti 0.002%, Zn 0.03 %, Mn 0.02%, Fe / Cu mass ratio is 1.3, the Si+Ni+Mn+Zn mass fraction is 0.2%, the rest is Al and unavoidable impurities, the total amount of impurity elements is 0.16%;

[0046]The present invention provides a method for preparing the above-mentioned ultra-high thermal conductivity and high plasticity medium-strength aluminum alloy, comprising the following steps:

[0047] (1) Melting: Heat the melting furnace to 720°C, put the aluminum ingot into the melting furnace to melt, after the aluminum ingot is completely melted, add Cu and Fe pure metals or their intermediate alloys into the aluminum melt according to the composition ratio, After it dissolves, add instant silicon, Al-Ti master alloy, Al-Mn master alloy, pure Zn and pure Mg accordi...

Embodiment 3

[0052] An ultra-high thermal conductivity and high plasticity medium-strength aluminum alloy of this embodiment consists of the following specific components and mass percentages: Cu 0.6%, Fe 2.4%, Mg 0.05wt.%, Si 0.2wt.%, Ni 0.02%, Zn 0.02 %, Mn 0.02%, Fe / Cu mass ratio is 4, the Si+Ni+Mn+Zn mass fraction is 0.26%, the rest is Al and unavoidable impurities, the total amount of impurity elements is 0.16%;

[0053] The present invention provides a method for preparing the above-mentioned ultra-high thermal conductivity and high plasticity medium-strength aluminum alloy, comprising the following steps:

[0054] (1) Melting: Heat the melting furnace to 740°C, put the aluminum ingot into the melting furnace to melt, after the aluminum ingot is completely melted, add Cu and Fe pure metals or their intermediate alloys into the aluminum melt according to the composition ratio, After it dissolves, add instant silicon, Al-Ni master alloy, Al-Mn master alloy, pure Zn and pure Mg accordin...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
tensile strengthaaaaaaaaaa
yield strengthaaaaaaaaaa
tensile strengthaaaaaaaaaa
Login to View More

Abstract

The invention discloses an ultrahigh-thermal-conductivity, high-plasticity and moderate-strength aluminum alloy and a preparation method thereof. The aluminum alloy is prepared from the components including, by mass, 0.5%-1.5% of Cu, 1.0%-2.5% of Fe, 0.03%-0.15% of Mg, 0.05%-0.5% of Si and the balance Al and inevitable impurities; the total amount of inevitable impurity elements is less than 0.2%, and the mass ratio of Fe to Cu in the aluminum alloy is (1-4):1. When the aluminum alloy is in an as-cast state, the heat conductivity coefficient is 204-217 W / (m.K), the tensile strength is 166-227 MPa, the yield strength is 100-121 MPa, and the elongation is 18-29%; the aluminum alloy is high in heat conductivity coefficient, good in mechanical property and excellent in casting property, is an ideal material for preparing castings with relatively-high requirements on heat conductivity, is suitable for being produced with technologies such as die casting, semi-solid rheoforming and liquid die forging, and has a wide application field.

Description

technical field [0001] The invention relates to the technical field of aluminum alloys, in particular to a medium-strength aluminum alloy with ultrahigh thermal conductivity and high plasticity and a preparation method thereof. Background technique [0002] With the rapid development of national key industries such as 5G communications and new energy vehicles, their structural components are developing in the direction of integration and thinning, and the operating power density and calorific value of equipment are getting higher and higher, which poses severe challenges to system and equipment heat dissipation. According to reports, most of the failure causes of electronic and communication products are caused by overheating and heat-related problems. Due to its light weight, corrosion resistance, and excellent thermal conductivity, aluminum alloys are widely used in parts that require high thermal conductivity, such as chassis shells and filter shells for 5G base stations,...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/00C22C1/03
CPCC22C1/026C22C1/03C22C21/00
Inventor 祁明凡李静媛张莹王继成李谷南康永林邓蒨瑜
Owner UNIV OF SCI & TECH BEIJING