Method for simultaneously improving strength and toughness of ultra-fine grain Al-Mg alloy
The invention discloses a method for simultaneously improving the strength and toughness of an ultra-fine grain Al-Mg alloy, which comprises the following steps: firstly, preparing Al-Mg equiaxial nanocrystalline powder by adopting a ball milling process, and forming a small amount of nano-sized nitride particles and oxide particles in the ball milling process; and then, solidification is carried out, and the compact block equiaxial ultra-fine grain Al-Mg alloy is formed. And finally, rolling to obtain the nano lamellar structure with nano-scale lamellar spacing and micron-scale lamellar length. According to the method, the strength and toughness of the obtained Al-Mg alloy product can be synchronously improved, and a new thought is provided for preparation of a high-performance Al-Mg alloy material; and the related preparation process is simple, convenient and easy to control, the preparation conditions are mild, the requirement on preparation equipment is low, and the method is suitable for large-scale industrial production..
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Patent| Erscheinungsjahr: |
2022 |
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| Erschienen: |
2022 |
| Enthalten in: |
Europäisches Patentamt - (2022) vom: 14. Juni Zur Gesamtaufnahme - year:2022 |
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| Sprache: |
Englisch |
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| Beteiligte Personen: |
LIN YAOJUN [VerfasserIn] |
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| Links: |
Volltext [kostenfrei] |
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| Anmerkungen: |
Source: www.epo.org (no modifications made), First posted: 2022-06-14, Last update posted on www.tib.eu: 2022-11-02, Last updated: 2023-02-09 |
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| Patentnummer: |
CN114619024 |
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| Förderinstitution / Projekttitel: |
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| PPN (Katalog-ID): |
EPA01506350X |
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| 520 | |a The invention discloses a method for simultaneously improving the strength and toughness of an ultra-fine grain Al-Mg alloy, which comprises the following steps: firstly, preparing Al-Mg equiaxial nanocrystalline powder by adopting a ball milling process, and forming a small amount of nano-sized nitride particles and oxide particles in the ball milling process; and then, solidification is carried out, and the compact block equiaxial ultra-fine grain Al-Mg alloy is formed. And finally, rolling to obtain the nano lamellar structure with nano-scale lamellar spacing and micron-scale lamellar length. According to the method, the strength and toughness of the obtained Al-Mg alloy product can be synchronously improved, and a new thought is provided for preparation of a high-performance Al-Mg alloy material; and the related preparation process is simple, convenient and easy to control, the preparation conditions are mild, the requirement on preparation equipment is low, and the method is suitable for large-scale industrial production. | ||
| 650 | 4 | |a B22F: Working metallic powder; manufacture of articles from metallic powder; making metallic powder (making alloys by powder metallurgy c22c); apparatus or devices specially adapted for metallic powder | |
| 650 | 4 | |a B82Y: Specific uses or applications of nanostructures; measurement or analysis of nanostructures; manufacture or treatment of nanostructures | |
| 650 | 4 | |a fer | |
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