Patent SG-11201908378W-A (SG)
Title: Composition and method for fusion processing aluminum alloy
Inventor: NELSON NORMAN
IPC: B23K15/06
Filed: 2018-03-09
Abstract: eN 00 O 1-1 1-1 N C (12) INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property Organization International Bureau (43) International Publication Date 20 September 2018 (20.09.2018) WIP0 I PCT oimiolo VIII °nolo VIII VIII mo 11E111111mo X11 ois (10) International Publication Number WO 2018/169766 A2 (51) International Patent Classification: C22C 21/08 (2006.01) B23K 26/34 (2014.01) B22F 3/105 (2006.01) B33Y 10/00 (2015.01) C22C 1/04 (2006.01) B23K 15/06 (2006.01) C22C 32/00 (2006.01) B23K 26/067 (2006.01) B33Y 70/00 (2015.01) B23K 26/342 (2014.01) B23K 9/04 (2006.01) B22F 3/24 (2006.01) B23K 15/00 (2006.01) B23K 103/10 (2006.01) B23K 26/06 (2014.01) (21) International Application Number: PCT/US2018/021653 (22) International Filing Date: 09 March 2018 (09.03.2018) (25) Filing Language: English (26) Publication Language: English (30) Priority Data: 15/457,312 13 March 2017 (13.03.2017) US (71) Applicant: RAYTHEON COMPANY [US/US]; 870 Winter Street, Waltham, Massachusetts 02451 (US). (72) Inventors: NELSON, Norman, D.; 50 Apple Hill Drive, Tewksbury, Massachusetts 01876 (US). MASON, Ralph, P.; 350 Lowell Street, Andover, Massachusetts 01810 (US). PISTORINO, Mark, J.; 50 Apple Hill Drive, Tewksbury, Massachusetts 01876-0901 (US). (74) Agent: PLATT, Jonathan, A.; 1621 Euclid Avenue, 19th Floor, Cleveland, Ohio 44115 (US). (81) Designated States (unless otherwise indicated, for every kind of national protection available): 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, (54) Title: COMPOSITION AND METHOD FOR FUSION PROCESSING ALUMINUM ALLOY 10 2O Fig. 2 (57) : An aluminum alloy precursor composition and method for fusion processing is provided which reduces hot cracking, improves compositional control, reduces porosity, and/or enhances the mechanical properties of the fusion processed article. The pre- cursor material and fusion process using the same may be utilized for forming an article that meets compositional specifications for aluminum 6061 alloy, while minimizing defects and meeting desired strength and ductility requirements. The fusion process may in- clude a leading energy beam for liquefying the precursor material to form a melt pool, and a trailing energy beam directed toward a trailing region of the melt pool. The trailing energy beam may be configured to enhance agitation and/or redistribution of liquid in the melt pool to prevent hot cracking, reduce porosity, or improve other characteristics of the solidified part. The method also may improve processing parameters, such as adjusting vacuum level to prevent volatilization of alloying elements. [Continued on next page] WO 2018/169766 A2 IMIOHOIIIMIIMEIHOMMIREOIIIIMOINEMIE 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. (84) Designated States (unless otherwise indicated, for every kind of regional protection available): ARIPO (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW), Eurasian (AM, AZ, BY, KG, KZ, RU, TJ, TM), European (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), OAPI (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG). Published: without international search report and to be republished upon receipt of that report (Rule 48.2(g))