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1. (WO2018159890) GRAIN-ORIENTED ZINC-ALUMINUM ALLOY AND MANUFACTURING METHOD THEREFOR
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Pub. No.: WO/2018/159890 International Application No.: PCT/KR2017/003019
Publication Date: 07.09.2018 International Filing Date: 21.03.2017
IPC:
C22C 18/04 (2006.01) ,C22C 1/02 (2006.01)
[IPC code unknown for C22C 18/04][IPC code unknown for C22C 1/02]
Applicants:
창원대학교 산학협력단 CHANGWON NATIONAL UNIVERSITY INDUSTRY ACADEMY COOPERATION CORPS [KR/KR]; 경상남도 창원시 의창구 창원대학로 20 20, Changwondaehak-ro, Uichang-gu, Changwon-si, Gyeongsangnam-do 51140, KR
Inventors:
한승전 HAN, Seung Zeon; KR
정해창 JEONG, Hae Chang; KR
안지혁 AHN, Jee Hyuk; KR
이재현 LEE, Je Hyun; KR
Agent:
박지호 PARK, Ji Ho; KR
Priority Data:
10-2017-002582428.02.2017KR
Title (EN) GRAIN-ORIENTED ZINC-ALUMINUM ALLOY AND MANUFACTURING METHOD THEREFOR
(FR) ALLIAGE ZINC-ALUMINIUM À GRAINS ORIENTÉS ET SON PROCÉDÉ DE FABRICATION
(KO) 방향성 결정립을 갖는 아연-알루미늄 합금 및 그 제조방법
Abstract:
(EN) A zinc-aluminum alloy according to the present invention is manufactured by a method comprising the steps of: obtaining a zinc-aluminum mother alloy through casting; and remelting the zinc-aluminum master alloy and unidirectionally solidifying the remolten master alloy at a unidirectional growth rate of 1 to 500 μm/sec in a molten metal at 450 to 700°C to grow the mother alloy such that the texture thereof has an orientation, whereby grains of the zinc-aluminum alloy have an average aspect ratio of 3 to 12. According to the present invention, grains and precipitates obtain an orientation by unidirectional solidification or continuous casting, and mechanical properties such as hardness, tensile strength, and elongation are thus improved. Further, the addition of copper makes such an effect more superior. Particularly, there is a great significance in that tensile strength and ductility which have properties opposite to each other and are thus hardly improved at the same time are enhanced together.
(FR) L'invention concerne un alliage zinc-aluminium fabriqué par un procédé comprenant les étapes consistant : à obtenir un alliage mère zinc-aluminium par coulée ; et à refondre de l'alliage mère de zinc-aluminium et à solidifier unidirectionnellement l'alliage mère refondu à un taux de croissance unidirectionnel de 1 à 500 µm/sec dans un métal fondu à 450 à 700 °C pour faire croître l'alliage mère de telle sorte que sa texture ait une orientation, les grains de l'alliage zinc-aluminium ayant un rapport d'aspect moyen de 3 à 12. Selon la présente invention, les grains et les précipités obtiennent une orientation par solidification unidirectionnelle ou coulée continue, et des propriétés mécaniques telles que la dureté, la résistance à la traction et l'allongement sont ainsi améliorées. En outre, l'ajout de cuivre rend un tel effet supérieur. En particulier, il existe une grande importance en ce que la résistance à la traction et la ductilité qui ont des propriétés opposées l'une à l'autre et sont ainsi à peine améliorées en même temps sont améliorées ensemble.
(KO) 본 발명에 따른 아연-알루미늄은, 주조방식을 통하여 아연-알루미늄 모합금을 얻는 단계; 및 상기 아연-알루미늄 모합금을 재용해하여 450 ~ 700℃인 용탕에서 1 ~ 500㎛/초의 일방향 성장 속도로 일방향 응고시켜 조직이 방향성을 갖도록 성장시키는 단계;를 포함하여 제조됨으로써, 결정립의 평균 종횡비가 3~12인 것을 특징으로 한다. 본 발명에 의하면, 일방향 응고 내지 연속주조에 의하여 결정립 및 석출물이 방향성을 가지게 되어 경도, 인장강도, 연신율과 같은 기계적 특성이 향상된다. 구리를 첨가하면 이러한 효과가 더욱 뛰어나게 된다. 특히, 서로 상반된 특성을 가져서 동시에 향상시키기 어려운 인장강도와 연성이 함께 향상된다는 점에서 큰 의의가 있다.
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JP, KE, KG, KH, KN, KP, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: Korean (KO)
Filing Language: Korean (KO)