Spawanie stopów magnezu wiązką laser CO2

• Autorzy: Kołodziejczak P. , Kalita W.
• Języki publikacji: PL

Abstrakty

PL

Zwiększenie wymagań dotyczących bezpieczeństwa środków transportu i komfortu podróżowania przy stosowaniu części wykonanych z tradycyjnych materiałów (stali lub stopów aluminium) powoduje znaczny wzrost zużycia paliwa i zanieczyszczenia środowiska.

EN

The objective of this paper is to present the experimental methods applied for developing of the technology of keyhole laser beam welding of magnesium alloys. With the disposal of CO₂ laser of maximum power of 2,5 kW the workpieces of alloys of MgAlZn and MgLiMn groups have been buttwelded with helium used as a shielding gas. The beam focal characteristics were determined by means of beam analyzer and the focal position have been consequently chosen with regard to the metal surface. With the helium shielding the macrostructures of the fusion zones are characterized by nearly parallel boundaries (only metal vapour plasma appeared). The analysis of microstructures of the joints and the tensile strength tests (until fracture) have permitted to determine the conditions when the joints of the best strength and without porosity could be obtained. The mesurements of hardness distributiion and the elemental distribution in the weld cross-sections allowed to find the changes due to heating in the fusion zone. The results of comparative corrosion resistance tests on base metals and the welds are reported.

Słowa kluczowe

PL

spawanie stopów magnezu; laser CO2; gaz osłonowy; badanie mikrotwardości

• Wydawca: Wydawnictwo HMR-TRANS Sp. z o.o.
• Czasopismo: Spajanie Materiałów Konstrukcyjnych
• Rocznik: 2009
• Tom: Nr 1 (3)
• Strony: 24--27
• Opis fizyczny: Bibliogr. 14 poz., fot., rys.

Twórcy

autor

Kołodziejczak P.

• Politechnika Warszawska

autor

Kalita W.

• Instytut Podstawowych Problemów Techniki PAN

Bibliografia

• [1] Frierich H., Schumann S.: Research for a "new age of magnesium" in the automotive industry, Journal of Materials Proceessings Technology, vol. 117, 2001, s. 276-281.
• [2] Aghion E., Bronfin B., Eliezer D.: The role of the magnesium industry in protecting the environment, Journal of Materials Proceessing Technology, vol. 117, 2001, s. 381-385.
• [3] Mordike B. L., Ebert T.: Magnesium. proprties - applications - potential, material Science and Engineering, A302, 2001, s. 37-45.
• [4] Weishait A., Galun R., Mordike L.: CO2 laser Beam Welding od Magnesium-Based Alloys, Welding Journal, vol. 77, no. 4, 1998, s. 149-154.
• [5] Dhahri M., Masse J. E., Mathieu J. F., Barreau G., Autric M.: CO2 Laser welding of magnesium alloys, Proc. SPIE (High-Power Lasers in Manufacturing), 3888, 2000, s. 725-732.
• [6] Zhao H., DebRoy T.: Pore Formation during Laser Beam Welding of Die-Cast Magnesium Alloy AM60B - Mechanism and Remedy, Welding Research Suppl., 2001,s. 204-210.
• [7] Dahari M., Masse J. E., Mathieu J. F., Barreau G., Autric M.: Laser Weldbality of WE43 Magnesium Alloy for Aeronautic Industry, proc. LANE, 2001, s. 297-310.
• [8] Haferkamp H., Goede M., Bormann A., Cordini P. Laser Beam Welding of Magnesium Alloys - New Possibilities using Fillter Wire and Arc Welding, Proc. LANE 2001, s. 333-338.
• [9] Kalita W., Kołodziejczyk P., Pokhmurska H.: Welding of Mg-Based Alloy AM20 by CO2 Laser Beam, Proc. International Conference on Laser Technologies in Welding and Materials pProcessing, Katsiveli, Ukraine, May 19-23, 2003, s. 214-216.
• [10] Watkins K. G.: Laser Welding of Magnesium Alloys, Proc. Magnesium Technology 2003, ed. H. I. Kaplan, s. 153-156.
• [11] Lathabai S., Barton K. J., Harris D., Lloyd P. G., Viano D. M., McLean A.: Welding and Weldability of AZ31B by Gas Tungsten Arc and laser Beam, Proc. Magnesium Technology 2003, ed. H. I. kaplan, s. 157-162.
• [12] Stern A., Munitz A., Koln G.: Application of Welding Technologies for Joining of Mg Alloys, Microstructure and Mechanical Proprietes, Proc. Magnesium Technology 2003, ed. H. I. Kaplan, s. 163-170.
• [13] Kalita W., Kołodziejczak P., Hoffman J., Mościcki T., Szymański Z.: Spawanie stopu magnezu AM20 laserem CO2, Przegląd Mechaniczny, nr 7/8, 2003, 48-51.
• [14] Hoffman J., Szymański Z.: Rola plazmy w procesie spawania laserowego, Przegląd Mechaniczny, nr 9, 1999, s. 7-11.