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Preparation technique for Al-Mg-Si-0.3Mn-0.2Er

A preparation process, al-10mn technology, applied in the field of metal alloys, can solve problems such as mechanical properties that have not been reported, and achieve the effect of improving tensile properties

Active Publication Date: 2010-02-24
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The results of literature review show that at present, rare earth microalloying is an important means of strengthening aluminum alloys. The rare earth element Sc has a significant effect on improving the overall performance of aluminum alloys. However, the high price of scandium greatly limits its application range, but rare earth elements In the application of aluminum-magnesium-silicon alloys, most of them are mixed rare earths except Sc, and Er has many positive effects in high-purity aluminum, aluminum-magnesium and other alloys, and can be used as a substitute element for Sc elements. We The previous experimental results also show that Er has a certain positive effect in Al-Mg-Si alloys; in addition, since Al-Mg-Si alloys are alloys that can be strengthened by heat treatment, there are many reports on the heat treatment system of this alloy, but Er There is no report on the changes in the mechanical properties of the aluminum-magnesium-silicon-manganese alloys after simulating the temperature and time of the paint baking process.

Method used

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  • Preparation technique for Al-Mg-Si-0.3Mn-0.2Er
  • Preparation technique for Al-Mg-Si-0.3Mn-0.2Er
  • Preparation technique for Al-Mg-Si-0.3Mn-0.2Er

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Experimental program
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Effect test

Embodiment 1

[0014] 1) Put 99.5% industrial pure Al, 99.5% industrial pure Mg, Al~20Si, Al-10Mn and Al-13%Er master alloy into the intermediate frequency induction furnace for melting, the heating temperature is 740~760℃, the melt After degassing and stirring operations, the Al-Mg-Si-0.3Mn-0.2Er alloy ingot was prepared by semi-continuous die casting method, and the ingot size was 1330×300×150mm 3 . After 460°C / 12h+550°C / 12h two-stage homogenization treatment, the ingot is cut and face milled, and then hot-rolled-cold-rolled (75%) to make a 1mm thick plate.

[0015] 2) Process the plate obtained in step 1) into a tensile sample according to GB6397-86, and then after solution treatment at 540°C / 0.5h + water quenching, aging treatment at a simulated baking temperature of 175°C for 0.5h.

Embodiment 2

[0017] Process the plate obtained in Step 1) of Example 1 into a tensile sample according to GB6397-86, and then after solution treatment at 540°C for 0.5h + water quenching, aging treatment at a simulated baking temperature of 200°C for 0.5h.

Embodiment 3

[0019] Process the plate obtained in Step 1) of Example 1 into a tensile sample according to GB6397-86, and then after solution treatment + water quenching at 540°C for 0.5h, aging treatment at a simulated baking temperature of 225°C for 0.5h.

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Abstract

The invention is an aging process for Al-Mg-Si-0.3Mn-0.2Er, belonging to the field of metal alloy technology. The invention improves the alloy strength by mill scraping the Al-Mg-Si-0.3Mn-0.2Er alloycast ingot after 460 / 12h+ 550 DEG / 12h double-layer homogenization treatment, 540 DEG C / 0.5h+ water quenching solution processing the plate manufactured by hot rolling and cold rolling after milling, aging heat processing for 0.5 to 24 hours under a simulating stoving varnish temperature of 175 DEG C or aging heat processing for 0.5 hours under a simulating stoving varnish temperature of 175 DEG Cto 250 DEG C. The alloy can acquire the highest strength when aging for 24 hours under 175 DEG C or aging heat processing for 0.5 hours under 225 DEG C. The invention provides an aging system for Er-containing Al-Mg-Si-Mn, and improves its feasibility by examples.

Description

technical field [0001] The invention belongs to the technical field of metal alloys, and in particular relates to a preparation process of an Al-Mg-Si-0.3Mn-0.2Er alloy. Background technique [0002] The results of literature review show that at present, rare earth microalloying is an important means of strengthening aluminum alloys. The rare earth element Sc has a significant effect on improving the overall performance of aluminum alloys. However, the high price of scandium greatly limits its application range, but rare earth elements In the application of aluminum-magnesium-silicon alloys, most of them are mixed rare earths except Sc, and Er has many positive effects in high-purity aluminum, aluminum-magnesium and other alloys, and can be used as a substitute element for Sc elements. We The previous experimental results also show that Er has a certain positive effect in Al-Mg-Si alloys; in addition, since Al-Mg-Si alloys are alloys that can be strengthened by heat treatmen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22F1/00B22D27/00
Inventor 李伯龙聂祚仁李红梅刘晓清黄晖左铁镛
Owner BEIJING UNIV OF TECH