Soğuk Metal Transferi ile Birleştirilen AA5754 Alaşımı İnce Sacların Korozyon Davranışı

Year 2018, Volume: 21 Issue: 4, 907 - 911, 01.12.2018

Hülya Durmuş Nilay Çömez

https://doi.org/10.2339/politeknik.385926

Cited By: 1

Abstract

AA5754 alüminyum alaşımı,
otomobillerin iç ve dış panellerinde yaygın olarak kullanılmaktadır. Bu
çalışmada, soğuk metal transferi (CMT) ile birleştirilen 2 mm kalınlığındaki
AA5754 levhaların, kaynak işlemi sonrası korozyon hızının araştırılması
amaçlanmıştır. Kaynak işlemi ER5356 dolgu teli kullanılarak 73.97, 86.18,
108.99 J/mm ısı girdisi değerlerinde gerçekleştirilmiştir. Isı girdisinin
korozyon hızına etkisi Tafel ekstrapolasyon yöntemi ile belirlenmiştir. Isı
girdisinin artmasıyla korozyon hızının arttığı tespit edilmiştir. Korozyona
uğramış yüzeyler taramalı elektron mikroskobu (SEM) ile incelenmiştir.  

Keywords

AA5754, CMT kaynağı, korozyon

Corrosion Behavior of AA5754 Thin Sheets Welded with Cold Metal Transfer Method

Abstract

AA5754 aluminium alloy are widely used in outer and
inner panels of automobiles. Present study aimed to investigate the corrosion
rate of cold metal transfer (CMT) welded 2 mm thick AA5754 sheets. Welded
sheets were produced with 73.97, 86.18, 108.99 J/mm heat input values using
ER5356 filler wire. Effect of heat input on corrosion rate was determined by
Tafel extrapolation method. It was determined that corrosion rate increased
with increasing heat input. Corroded surfaces were viewed by SEM. Hardness test
was applied and maximum hardness values were observed in weld metal.

Keywords

AA5754, CMT welding, corrosion

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