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1. WO2018205287 - HIGH-STRENGTH AND -TOUGHNESS CORROSION-RESISTANT ALUMINUM ALLOY MATERIAL AND METHOD FOR FABRICATING SAME

Publication Number WO/2018/205287
Publication Date 15.11.2018
International Application No. PCT/CN2017/084607
International Filing Date 16.05.2017
IPC
C22C 21/02 2006.1
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
C22C 1/03 2006.1
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
C22F 1/043 2006.1
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 21/02
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
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
  • 南通江中光电有限公司 NANTONG JIANGZHONG PHOTOELECTRICITY CO., LTD. [CN]/[CN]
Inventors
  • 许应龙 XU, Yinglong
Agents
  • 北京驰纳智财知识产权代理事务所(普通合伙) BEIJING CHINA IP LTD.
Priority Data
201710332016.612.05.2017CN
Publication Language Chinese (zh)
Filing Language Chinese (ZH)
Designated States
Title
(EN) HIGH-STRENGTH AND -TOUGHNESS CORROSION-RESISTANT ALUMINUM ALLOY MATERIAL AND METHOD FOR FABRICATING SAME
(FR) MATÉRIAU D'ALLIAGE D'ALUMINIUM RÉSISTANT À LA CORROSION À HAUTE RÉSISTANCE ET HAUTE TÉNACITÉ ET SON PROCÉDÉ DE FABRICATION
(ZH) 一种高强韧耐腐蚀铝合金材料及其制备方法
Abstract
(EN) Provided is a high-strength and -toughness corrosion-resistant aluminum alloy material, containing 7.93-8.92 wt% of silicon, 1.98-2.11 wt% of copper, 0.001-0.02 wt% of manganese, 0.001-0.02 wt% of magnesium, 0.005-0.23 wt% of zinc, 0.182-0.62 wt% of zirconium, and 0.0346-0.0391 wt% or 0.0391-0.04 wt% of strontium. On the basis of the composition design of conventional Al-Si-Cu series aluminum-alloy casting, the content of silicon, copper, zirconium, and strontium is adjusted and the silicon phase of the aluminum alloy is very effectively refined, such that the dimensions of the silicon are concentrated at the submicron level; furthermore, the length-to-diameter ratio is concentrated at ≤2, such that the material impact toughness is ≥34.3 J/cm^2, the tensile strength is ≥208 MPa, the elongation after fracture is ≥6.5%, and the corrosion rate is ≤0.049 mm/y after the invention material is immersed in a 3.5% NaCl aqueous solution for 93 h.
(FR) L'invention concerne un matériau d'alliage d'aluminium résistant à la corrosion à haute résistance et haute ténacité, contenant 7,93 à 8,92 % en poids de silicium, 1,98 à 2,11 % en poids de cuivre, 0,001 à 0,02 % en poids de manganèse, 0,001 à 0,02 % en poids de magnésium, 0,005 à 0,23 % en poids de zinc, 0,182 à 0,62 % en poids de zirconium et 0,0346 à 0,0391 % en poids ou 0,0391 à 0,04 % en poids de strontium. Sur la base de la conception de composition d'une coulée classique d'un alliage d'aluminium de la série Al-Si-Cu, la teneur en silicium, cuivre, zirconium et strontium est ajustée et la phase silicium de l'alliage d'aluminium est affinée très efficacement, de telle sorte que les dimensions du silicium sont concentrées au niveau submicronique ; de plus, le rapport de la longueur au diamètre est concentré à ≤2, de telle sorte que la ténacité à l'impact du matériau est ≥34,3 J/cm^2, la résistance à la traction est ≥208 MPa, l'allongement après rupture est ≥6,5 % et le taux de corrosion est ≤0,049 mm/y après immersion du matériau de l'invention dans une solution aqueuse à 3,5 % de NaCl pendant 93 h.
(ZH) 一种高强韧耐腐蚀铝合金材料,包含7.93~8.92wt%硅、1.98~2.11wt%铜、0.001~0.02wt%锰、0.001~0.02wt%镁、0.005~0.23wt%锌、0.182~0.62wt%锆以及0.0346~0.0391wt%或0.0391~0.04wt%锶。在常规Al-Si-Cu系铸造铝合金成分设计的基础上,通过调整硅、铜、锆和锶的含量,高效细化了铝合金中的硅相,使硅尺寸集中在亚微米级,并且长径比集中在≤2,使其材料冲击韧性≥34.3J/cm2,抗拉强度≥208MPa,断后延伸率≥6.5%,在3.5%NaCl水溶液中浸泡93h的腐蚀速率≤0.049mm/y。
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