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

Al-13Si alloy containing RE, Sr and B and preparation method thereof

An alloy, g-563.9j technology, applied in the field of alloy material preparation, can solve problems such as an effective method for heat storage performance of aluminum-silicon alloys

Inactive Publication Date: 2020-06-23
HUNAN INSTITUTE OF SCIENCE AND TECHNOLOGY
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no effective method to improve the heat storage performance of Al-Si alloys.

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
  • Al-13Si alloy containing RE, Sr and B and preparation method thereof
  • Al-13Si alloy containing RE, Sr and B and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Weigh 999.8g of industrial pure aluminum, 159.2g of crystalline silicon, 2.4g of Al-4B master alloy, 2g of Al-10Sr master alloy and 61g of Al-10RE master alloy with a balance. Commercially pure aluminum (purity>99.9Wt%) and crystalline silicon (purity>99.9Wt%) were put into a graphite crucible, and then heated up to 760°C at a heating rate of 10°C / min, until completely melted, stirred for 5 minutes, and added 0.5 % of hexachloroethane to refine and degas the aluminum-silicon alloy liquid, stir, remove slag, and keep warm for 40 minutes; then raise the temperature to 840°C at a heating rate of 10°C / min, and add Al-10RE master alloy for refining treatment. And keep it warm for 50 minutes; then lower the temperature to 740°C at a rate of 2°C / min, add Al-4B and Al-10Sr master alloys and stir for 5 minutes and keep warm for 40 minutes for refining treatment; stir again, remove slag, and stand for 5 minutes , The alloy liquid is poured into a metal mold at a temperature of 10...

Embodiment 2

[0018] Weigh 916.9g of industrial pure aluminum, 156.2g of crystalline silicon, 4.4g of Al-4B master alloy, 4.8g of Al-10Sr master alloy and 119g of Al-10RE master alloy with a balance. Put industrial pure aluminum (purity>99.9Wt%) and crystalline silicon (purity>99.9Wt%) into a graphite crucible, then raise the temperature to 760°C at a heating rate of 10°C / min, wait for complete melting, stir for 5 minutes, add 0.5% hexachloroethane is used to refine and degas the aluminum-silicon alloy liquid, stir, remove slag, and keep warm for 40 minutes; then raise the temperature to 840°C at a heating rate of 10°C / min, and add Al-10RE master alloy for refining treatment , and keep it warm for 50 minutes; then cool down to 740°C at a rate of 2°C / min, add Al-4B and Al-10Sr master alloys and stir for 5 minutes and hold for 40 minutes for refinement; stir again, remove slag, and stand for 5 Minutes, the alloy liquid is poured into a metal mold at a temperature of 100°C. Its latent heat of...

Embodiment 3

[0020] Weigh 922.4g of industrial pure aluminum, 161.6g of crystalline silicon, 5.7g of Al-4B master alloy, 6.1g of Al-10Sr master alloy and 147g of Al-10RE master alloy with a balance. Put industrial pure aluminum (purity>99.9Wt%) and crystalline silicon (purity>99.9Wt%) into a graphite crucible, then raise the temperature to 760°C at a heating rate of 10°C / min, wait for complete melting, stir for 5 minutes, add 0.5% hexachloroethane is used to refine and degas the aluminum-silicon alloy liquid, stir, remove slag, and keep warm for 40 minutes; then raise the temperature to 840°C at a heating rate of 10°C / min, and add Al-10RE master alloy for refining treatment , and keep it warm for 50 minutes; then cool down to 740°C at a rate of 2°C / min, add Al-4B and Al-10Sr master alloys and stir for 5 minutes and hold for 40 minutes for refinement; stir again, remove slag, and stand for 5 Minutes, the alloy liquid is poured into a metal mold at a temperature of 100°C. Its latent heat of...

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
phase transition enthalpyaaaaaaaaaa
phase transition enthalpyaaaaaaaaaa
phase transition enthalpyaaaaaaaaaa
Login to View More

Abstract

The invention provides an Al-13Si alloy containing RE, Sr and B and belongs to the technical field of alloy materials. The Al-13Si alloy containing RE, Sr and B comprises the chemical components of, in mass fraction, 13.0 Wt% of Si, 0.0078-0.0183 Wt% of B, 0.016-0.049 Wt% of Sr, 0.5-1.2 Wt% of RE and the balance of Al. According to the Al-13Si alloy containing RE, Sr and B, the RE, Sr and B elements are added into silico-aluminum alloy, so that an important significance is maintained for improving the heat storage performance of the Al-Si alloy, and the latent heat of phase change of the Al-Sialloy is measured to be 465.6J / g-563.9J / g by a thermal analyzer (DSC).

Description

technical field [0001] The invention relates to the technical field of alloy material preparation, in particular to an Al-13Si alloy containing RE, Sr and B and a preparation method thereof. Background technique [0002] Aluminum-silicon alloy heat storage materials have high thermal conductivity (usually 100-200w / (m K)), high energy storage density (phase change latent heat up to 400-500kJ / kg) and high and stable working temperature (phase change temperature is at 577°C, and the working temperature can reach up to 620°C), has become the most important metal phase change heat storage material at present, and has a good application prospect in high temperature heat storage of solar thermal power generation. However, studies have shown that in the heat storage process of aluminum-silicon alloys without other alloying elements, after repeated melting-solidification thermal cycles, due to the non-equilibrium instability of the as-cast microstructure of the alloy, silicon element...

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): C22C21/02C22C1/03C09K5/06
CPCC09K5/063C22C1/026C22C1/03C22C21/02
Inventor 李小松李天亦蔡安辉万辉刘童
Owner HUNAN INSTITUTE OF SCIENCE AND TECHNOLOGY