Soğuk Metal Transfer Kaynağı ile Birleştirilmiş AA7075-Galvanizli Çelik Çiftinin Korozyon Direncinin İncelenmesi

Yıl 2019, Cilt: 7 Sayı: 1, 639 - 644, 30.06.2019

Hülya Durmuş Nilay Çömez

https://doi.org/10.18586/msufbd.540645

Cited By: 1

Öz

Korozyon, metalin çevresi ile arasındaki
kimyasal reaksiyonların bir sonucu olarak bozulmasıdır. Fakat korozyon, önceden
tahmin edilebilir, bazı durumlarda önemli ölçüde yavaşlatılabilir veya
önlenebilir. Bu çalışmada, pek çok konstrüksiyonun oluşturulmasında kullanılan
imalat yöntemlerinden biri olan kaynak çeşitlerinden soğuk metal transfer
kaynağı ile üretilen AA7075-galvanizli çelik bağlantılarda galvanik korozyon
oluşumunun ve farklı bağlantıların gerilme dayanımına etkisi incelenmiştir.
Alüminyum ve çelik çifti diğer kaynak yöntemleriyle birleştirilmesinin zor
olduğu bir çifttir. Bu yöntem ile birleştirilme sağlanmıştır. Bu çalışmada,
bağlantıda oluşacak korozyon incelenmiştir. Sonuç olarak, kaynak sırasında
artan ısı girişi galvanik korozyonu olumsuz yönde etkiledi ve malzeme
çözünmesini arttırdığı tespit edilmiştir.

Anahtar Kelimeler

AA7075, Çelik, Kaynak, Korozyon, Soğuk Metal Transfer

Investigation of Corrosion Resistance of Cold Metal Transfer Welded AA7075 Aluminum Alloy Galvanized Steel Couples

Öz

Corrosion is the degradation of
the metal as a result of chemical reactions with its surroundings. However,
corrosion can be predicted, in some cases significantly slowed down or
prevented. In this study, the effect of galvanic corrosion formation on the tensile
strength of AA7075-galvanized steel joints produced by cold metal transfer
welding, which is one of the manufacturing methods used in forming many
constructions, was investigated. The aluminum and steel pair are difficult to
combine with other welding methods. Joining is provided by this method.
Corrosion in this joining was investigated in this article. As a result,
increased heat input during welding adversely affected galvanic corrosion and
increased material dissolution.

Anahtar Kelimeler

AA7075, cold metal transfer, corrosion, welding, steel

Kaynakça

• [1.] Sun, Q.J., Li, J.Z., Liu, Y.B., Li, B.P., Xu, P.W., Feng, J.C. Microstructural characterization and mechanical properties of Al/Ti joint welded by CMT method-Assisted hybrid magnetic field, Materials Design, 116, 316-324, 2017.
• [2.] Wang, T., Zhang, Y., Li, X., Zhang, B., Feng, J. Influence of beam current on microstructures and mechanical properties of electron beam welding-brazed aluminum-steel joints with an Al5Si filler wire. Vacuum, 141, 281-287, 2017.
• [3.] Huang, J., He, J., Yu, X., Li, C., Fan, D. The study of mechanical strength for fusion-brazed butt joint between aluminum alloy and galvanized steel by arc-assisted laser welding. Journal of Manufacturing Processes, 25, 126-133, 2017.
• [4.] Lim, Y. C., Squires, L., Pan, T. Y., Miles, M., Song, G. L., Wang, Y., Feng, Z. Study of mechanical joint strength of aluminum alloy 7075-T6 and dual phase steel 980 welded by friction bit joining and weld-bonding under corrosion medium. Materials Design, 69, 37-43, 2015.
• [5.] Zhang, H. T., Feng, J. C., He, P., Zhang, B. B., Chen, J. M., Wang, L. The arc characteristics and metal transfer behavior of cold metal transfer and its use in joining aluminum to zinc-coated steel. Materials Science and Engineering: A, 499(1-2), 111-113, 2009.
• [6.] Shi, Y., Li, J., Zhang, G., Huang, J., Gu, Y. Corrosion behavior of aluminum-steel weld-brazing joint. Journal of Materials Engineering and Performance, 25(5), 1916-1923, 2016.
• [7.] Hasan, B.O. Galvanic corrosion of aluminum–steel under two-phase flow dispersion conditions of CO2 gas in CaCO3 solution. Journal of Petroleum Science and Engineering, 133, 76-84, 2015.
• [8.] Borrisutthekul R., Seangsai A., Paonil W. GTAW of Zinc-Coated Steel and Aluminum Alloy, Eng. J. 22, 3, 39-49, 2018.
• [9.] Fahimpour, V., Sadrnezhaad, S.K., Karimzadeh, F. Corrosion behavior of aluminum 6061 alloy joined by friction stir welding and gas tungsten arc welding methods, Materials Design, 39, 329-333, 2012.
• [10.] Calabrese, L., Proverbio, E., Galtieri, G., Borsellino, C. Effect of corrosion degradation on failure mechanisms of aluminum/steel clinched joints, Materials Design, 87, 473-481, 2015.
• [11.] Zhou, Y., Lin, Q. Wetting of galvanized steel by Al 4043 alloys in the first cycle of CMT process. Journal of Alloys and Compounds, 589, 307-313, 2014.
• [12.] Yang, S., Zhang, J., Lian, J., Lei, Y. Welding of aluminum alloy to zinc coated steel by cold metal transfer. Materials Design, 49, 602-612, 2013.
• [13.] Agudo, L., Eyidi, D., Schmaranzer, C. H., Arenholz, E., Jank, N., Bruckner, J., Pyzalla, A. R. Intermetallic FexAly-phases in a steel/Al-alloy fusion weld. Journal of Materials Science, 42(12), 4205-4214, 2007.
• [14.] Schweitzer, P. A. 2009. Fundamentals of Corrosion: Mechanisms, Causes, and Preventative Methods. USA: CRC Press, Taylor Francis Group, p. 189-193, 2009.
• [15.] Vargel, C. Corrosion of Aluminum, Elsevier, Oxford, England, p. 700, 2004.
• [16.] Na, K.-H., Pyun, S.-I. Comparison of susceptibility to pitting corrosion of AA2024-T4, AA7075-T651 and AA7475-T761 aluminum alloys in neutral chloride solutions using electrochemical noise analysis, Corrosion Science, 50(1), 248-258, 2008.