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1. WO2020113713 - HIGH STRENGTH AND DUCTILITY CASTED ALUMINUM-SILICON ALLOY, MANUFACTURING METHOD FOR SAME, AND APPLICATIONS THEREOF

Publication Number WO/2020/113713
Publication Date 11.06.2020
International Application No. PCT/CN2018/123578
International Filing Date 25.12.2018
IPC
C22C 21/04 2006.01
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
CALLOYS
21Alloys based on aluminium
02with silicon as the next major constituent
04Modified aluminium-silicon alloys
C22C 1/03 2006.01
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
CALLOYS
1Making non-ferrous alloys
02by melting
03using master alloys
C22C 1/06 2006.01
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
CALLOYS
1Making non-ferrous alloys
06with the use of special agents for refining or deoxidising
C22F 1/043 2006.01
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
FCHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS OR NON-FERROUS ALLOYS
1Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
04of aluminium or alloys based thereon
043of alloys with silicon as the next major constituent
CPC
C22C 1/026
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
CALLOYS
1Making alloys
02by melting
026Alloys based on aluminium
C22C 1/03
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
CALLOYS
1Making alloys
02by melting
03using master alloys
C22C 1/06
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
CALLOYS
1Making alloys
06with the use of special agents for refining or deoxidising
C22C 21/04
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
CALLOYS
21Alloys based on aluminium
02with silicon as the next major constituent
04Modified aluminium-silicon alloys
C22F 1/002
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
FCHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
1Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
002by rapid cooling or quenching; cooling agents used therefor
C22F 1/043
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
FCHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
1Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
04of aluminium or alloys based thereon
043of alloys with silicon as the next major constituent
Applicants
  • 广东省材料与加工研究所 GUANGDONG INSTITUTE OF MATERIALS AND PROCESSING [CN]/[CN]
Inventors
  • 王顺成 WANG, Shuncheng
  • 宋东福 SONG, Dongfu
  • 康跃华 KANG, Yuehua
  • 黄慧兰 HUANG, Huilan
Agents
  • 北京高沃律师事务所 BEIJING GAOWO LAW FIRM
Priority Data
201811489233.706.12.2018CN
Publication Language Chinese (ZH)
Filing Language Chinese (ZH)
Designated States
Title
(EN) HIGH STRENGTH AND DUCTILITY CASTED ALUMINUM-SILICON ALLOY, MANUFACTURING METHOD FOR SAME, AND APPLICATIONS THEREOF
(FR) ALLIAGE D’ALUMINIUM-SILICIUM COULÉ À RÉSISTANCE ET DUCTILITÉ ÉLEVÉES, PROCÉDÉ DE FABRICATION DE CELUI-CI ET APPLICATIONS DE CELUI-CI
(ZH) 一种高强韧铸造铝硅合金及其制备方法和应用
Abstract
(EN)
Provided in the present invention are a high strength and ductility casted aluminum-silicon alloy, a manufacturing method for same, and applications thereof. The aluminum-silicon alloy consists of the following components in terms of mass percent: Si 7-8%, Mg 0.4-0.5%, Fe 0.1-0.2%, Ti 0.1-0.2%, Sr 0.01-0.02%, La 0.03-0.06%, Ce 0.02-0.04%, and the remainder is Al and unavoidable elemental impurities. The manufacturing method comprises the smelting of an aluminum-silicon alloy liquid, refinement and modification, refining for gas removal and impurity removal, casting, and a solution ageing treatment. The present invention, by optimizing the content of elemental Si and Mg, refining and modifying an α-Al crystallite, a β-Fe iron-rich phase, and an eutectic Si phase, allows the α-Al dendritic crystal to be converted into fine equiaxed crystallites, allows the acicular and flaky β-Fe iron-rich phase and the eutectic Si phase to be converted into a fine granular or short rod form, and eliminates the hazards posed by the acicular and flaky β-Fe iron-rich phase and the eutectic Si phase on the strength, plasticity, and fracture toughness of the aluminum-silicon alloy. The casted aluminum-silicon alloy of the present invention is provided with high strength, great plasticity, and excellent fracture toughness and is applicable in casting various force-bearing structural parts, such as vehicular lightweight structural parts.
(FR)
La présente invention concerne un alliage d’aluminium-silicium coulé à résistance et ductilité élevées, un procédé de fabrication de celui-ci et des applications de celui-ci. L’alliage d’aluminium-silicium est constitué des composants suivants en termes de pourcentage en masse : Si 7 à 8 %, Mg 0,4 à 0,5 %, Fe 0,1 à 0,2 %, Ti 0,1 à 0,2 %, Sr 0,01 à 0,02 %, La 0,03 à 0,06 %, Ce 0,02 à 0,04 %, et le reste est Al et des impuretés élémentaires inévitables. Le procédé de fabrication comprend la fusion d’un liquide d’alliage d’aluminium-silicium, un affinage et une modification, un affinage pour l’élimination de gaz et l’élimination d’impuretés, une coulée, et un traitement de vieillissement de solution. La présente invention, par optimisation de la teneur en Si et Mg élémentaires, affinage et modification d’une cristallite α-Al, d’une phase riche en fer β-Fe et d’une phase de Si eutectique, permet au cristal dendritique α-Al d’être converti en cristallites équiaxiales fines, permet à la phase riche en fer β-Fe aciculaire et lamellaire et à la phase de Si eutectique d’être converties en une forme granulaire fine ou de bâtonnets courts, et élimine les risques que présentent la phase riche en fer β-Fe aciculaire et lamellaire et la phase Si eutectique pour la résistance, la plasticité et la ténacité à la rupture de l’alliage d’aluminium-silicium. L’alliage d’aluminium-silicium coulé selon la présente invention présente une résistance élevée, une haute plasticité et une excellente ténacité à la rupture et est applicable dans le moulage de diverses parties structurales de support de force, telles que des parties structurales légères de véhicule.
(ZH)
本发明提供一种高强韧铸造铝硅合金及其制备方法和应用,所述铝硅合金由以下质量百分比的成分组成:Si7~8%,Mg0.4~0.5%,Fe0.1~0.2%,Ti0.1~0.2%,Sr0.01~0.02%,La0.03~0.06%,Ce0.02~0.04%,其余为Al和不可避免的杂质元素。制备方法包括熔炼配制铝硅合金液、细化变质、精炼除气除杂、铸造和固溶时效处理。本发明通过优化Si、Mg元素的含量,细化变质α-Al晶粒、β-Fe富铁相和共晶Si相,使α-Al树枝晶转变为细小等轴晶粒,使针片状β-Fe富铁相和共晶Si相转变为细小的颗粒状或短棒状,消除针片状β-Fe富铁相和共晶Si相对铝硅合金强度、塑性和断裂韧性的危害。本发明铸造铝硅合金具有强度高、塑性好和优异的断裂韧性,适合于铸造各种受力结构件,如汽车轻量化结构件。
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