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1. (WO2019046423) REMOTE LASER DESENSITIZATION SYSTEMS AND METHODS FOR DESENSITIZING ALUMINUM AND OTHER METAL ALLOYS
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Pub. No.: WO/2019/046423 International Application No.: PCT/US2018/048541
Publication Date: 07.03.2019 International Filing Date: 29.08.2018
IPC:
C22F 1/04 (2006.01) ,C21D 10/00 (2006.01)
C CHEMISTRY; METALLURGY
22
METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
F
CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS OR NON-FERROUS ALLOYS
1
Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
04
of aluminium or alloys based thereon
C CHEMISTRY; METALLURGY
21
METALLURGY OF IRON
D
MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING, OR OTHER TREATMENTS
10
Modifying the physical properties by methods other than heat treatment or deformation
Applicants:
NUTECH VENTURES [US/US]; 2021 Transformation Drive Suite 2220 Lincoln, Nebraska 68508, US
Inventors:
LU, Yongfeng; US
DENG, Leimin; US
ZHANG, Chenfei; US
SUN, Shiding; US
LIU, Lei; US
Agent:
GRAY, Gerald T.; US
Priority Data:
62/551,70729.08.2017US
Title (EN) REMOTE LASER DESENSITIZATION SYSTEMS AND METHODS FOR DESENSITIZING ALUMINUM AND OTHER METAL ALLOYS
(FR) SYSTÈMES DE DÉSENSIBILISATION AU LASER À DISTANCE ET PROCÉDÉS POUR LA DÉSENSIBILISATION D'ALLIAGES D'ALUMINIUM ET AUTRES MÉTAUX
Abstract:
(EN) A method for desensitizing a metal alloy such as an aluminum (Al) alloy is presented. The surface of the alloy is treated by controlled laser beam irradiation. The scanning laser beam heats the alloy to reach a relative low temperature between a solvus temperature and a soften/annealing temperature of the metal alloy to controllably reduce the degree of sensitization (DOS) of the metal alloy. The locally rapid heating and cooling effects produced by scanning the laser can improve the future sensitization resistance of the metal alloy, reduce the average desensitization temperature applied, and maintain the mechanical properties of Al alloy at the same time.
(FR) L'invention concerne un procédé pour la désensibilisation d'un alliage métallique tel qu'un alliage d'aluminium (Al). La surface de l'alliage est traitée par irradiation contrôlée par faisceau laser. Le faisceau laser de balayage chauffe l'alliage pour atteindre une température relativement basse entre une température de solvus et une température de ramollissement/recuit de l'alliage métallique pour réduire de manière contrôlée le degré de sensibilisation (DOS) de l'alliage métallique. Les effets du chauffage et du refroidissement localement rapides produits par le balayage du laser permettent d'améliorer la résistance à la sensibilisation future de l'alliage métallique, de réduire la température moyenne de désensibilisation appliquée et de maintenir en même temps les propriétés mécaniques de l'alliage d'aluminium.
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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, JO, JP, KE, KG, KH, KN, KP, KR, 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: English (EN)
Filing Language: English (EN)