Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Al-Si-Mg-Er rare earth casting aluminium alloy

An al-si-mg-er, casting aluminum alloy technology, applied in the field of metal alloys, can solve the problems that the mechanical properties research has not been reported yet, and the modification effect of rare earth element Er has not been studied, and achieves comprehensive performance improvement, tensile strength. and the effect of increasing yield strength

Inactive Publication Date: 2010-05-12
BEIJING UNIV OF TECH
View PDF0 Cites 18 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, no one has studied the modification of rare earth element Er, especially the mechanical properties after modification have not been reported.

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-Si-Mg-Er rare earth casting aluminium alloy
  • Al-Si-Mg-Er rare earth casting aluminium alloy
  • Al-Si-Mg-Er rare earth casting aluminium alloy

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Embodiment 1: adopt conventional gravity casting to prepare Al-Si-Mg-Er alloy, used raw material is high-purity Al (purity is 99.99%), industrial pure Mg (purity is 99.9%), Al-12% Si master alloy and Al-6% Er master alloy. Firstly, 631.7g of high-purity aluminum and 838.4g of Al-12% Si master alloy were added into a graphite clay crucible, and the alloy was melted in a resistance furnace at a melting temperature of 750°C. After the metal is completely melted, press 6.4g of pure Mg into the metal melt with a bell jar, and the alloy is heated at 720°C with C 2 Cl 6 Degassing and refining. After standing for 20 minutes, raise the temperature to 750°C and add 25g Al-6% Er master alloy. After standing still, it is poured into an iron mold to obtain an Al-7%Si-0.4%Mg-0.1%Er alloy ingot, and the pouring temperature is 720°C.

Embodiment 2

[0015] Embodiment 2: adopt conventional gravity casting to prepare Al-Si-Mg-Er alloy, used raw material is high-purity Al (purity is 99.99%), industrial pure Mg (purity is 99.9%), Al-12% Si master alloy and Al-6% Er master alloy. Firstly, 581.7g of high-purity aluminum and 838.4g of Al-12% Si master alloy were added into a graphite clay crucible, and the alloy was melted in a resistance furnace at a melting temperature of 750°C. After the metal is completely melted, press 6.4g of pure Mg into the metal melt with a bell jar, and the alloy is heated at 720°C with C 2 Cl 6 Degassing and refining. After standing still for 20 minutes, the temperature was raised to 750° C. and 75 g of Al-6% Er master alloy was added. After standing still, it is poured into an iron mold to obtain an Al-7%Si-0.4%Mg-0.3%Er alloy ingot, and the pouring temperature is 720°C.

Embodiment 3

[0016] Embodiment 3: adopt conventional gravity casting to prepare Al-Si-Mg-Er alloy, used raw material is high-purity Al (purity is 99.99%), industrial pure Mg (purity is 99.9%), Al-12% Si master alloy and Al-6% Er master alloy. Firstly, 531.7g of high-purity aluminum and 838.4g of Al-12% Si master alloy were added into a graphite clay crucible, and the alloy was melted in a resistance furnace at a melting temperature of 750°C. After the metal is completely melted, press 6.4g of pure Mg into the metal melt with a bell jar, and the alloy is heated at 720°C with C 2 Cl 6 Degassing and refining. After standing still for 20 minutes, raise the temperature to 750°C and add 125g Al-6% Er master alloy. After standing still, it is poured into an iron mold to obtain an Al-7%Si-0.4%Mg-0.5%Er alloy ingot, and the pouring temperature is 720°C.

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
Yield strengthaaaaaaaaaa
Login to View More

Abstract

The invention belongs to the technical field of metal alloy, and provides Al-Si-Mg-Er rare earth casting aluminium alloy which is characterized in that rare earth Er element accounting for 0.1-0.8% of the weight percent of final product is added into ZL101 alloy matrix. The ZL101 alloy comprises the following components by weight percent: 6.5-7.5 percent of Si, 0.25-0.45 percent of Mg and the balance of Al. As trace rare earth Er element is added, primary a-Al phase is thinned, eutectic silicon phase is changed into tiny coral shape from thick needle piece shape, the combination property of the alloy can be improved, the tensile strength and the yield strength are slightly enhanced compared with those of the alloy which has the original components and is not added with Er, and the elongation is 2 times higher than that thereof.

Description

technical field [0001] The invention belongs to the technical field of metal alloys. Background technique [0002] Aluminum-silicon cast aluminum alloy has good liquid fluidity, corrosion resistance, good weldability, low shrinkage and low thermal expansion coefficient, and is the most widely used cast aluminum alloy. Hypoeutectic aluminum-silicon alloy ZL101 (GB / T 1173-1995) is widely used in the automotive industry and aerospace manufacturing. The main function of adding Si to the cast aluminum-silicon alloy is to improve the fluidity of the alloy, reduce the tendency of thermal cracking, reduce porosity, and improve air tightness. The main function of adding a small amount of Mg is to form a strengthening phase Mg with Si. 2 Si increases the strength of the alloy. The eutectic silicon phase of the Al-Si alloy without modification treatment is in the shape of coarse needle flakes. The silicon phase splits the matrix and reduces the strength and plasticity of the alloy. ...

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
IPC IPC(8): C22C21/02
Inventor 聂祚仁郑学斌苏学宽
Owner BEIJING UNIV OF TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com