%0 Journal Article
%T Effect of Pulsed Current TIG Welding Parameters on Pitting Corrosion Behaviour of AA6061 Aluminium Alloy
%A TSenthil Kuma
%A VBalasubramanian
%A MYSanavullah
%A SBabu
%A <br>T.
%A Senthil
%A Kumar
%A V.
%A Balasubramanian
%A M.
%A Y.
%A Sanavullah
%A S.
%A Babu
%J 材料科学技术学报
%D 2007
%I 
%X Medium strength aluminium alloy (Al-Mg-Si alloy) has gathered wide acceptance in the fabrication of light weight structures requiring a high strength-to weight ratio, such as transportable bridge girders, military vehicles, road tankers and railway transport systems. The preferred welding process for aluminium alloy is frequently TIG (tungsten inert gas) welding due to its comparatively easier applicability and better economy. In the case of single pass TIG welding of thinner section of this alloy, the pulsed current has been found beneficial due to its advantages over the conventional continuous current process. The use of pulsed current parameters has been found to improve the mechanical properties of the welds compared to those of continuous current welds of this alloy due to grain refinement occurring in the fusion zone. A mathematical model has been developed to predict pitting corrosion potential of pulsed current TIG welded AA6061 aluminium alloy. Factorial experimental design has been used to optimize the experimental conditions. Analysis of variance technique has been used to find out the significant pulsed current parameters. Regression analysis has been used to develop the model. Using the developed model pitting corrosion potential values have been estimated for different combinations of pulsed current parameters and the results are analyzed in detail.
%K Pulsed current
%K Tungsten inert gas welding
%K Medium strength aluminium alloy
%K Pitting corrosion
%K Design of experiments
%K Analysis of variance<br>铝合金
%K 点蚀行为
%K 脉冲电流
%K 惰性气体保护焊
%K 焊接参数
%K 腐蚀
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=84529CA2B2E519AC&jid=324DC3CAB22330DB19158AE0A9B7BFA5&aid=FB0EB47DDBA8D832&yid=A732AF04DDA03BB3&vid=EA389574707BDED3&iid=0B39A22176CE99FB&sid=E089FDF3CDAE8561&eid=F8035C8B7D8A4264&journal_id=1005-0302&journal_name=材料科学技术学报&referenced_num=0&reference_num=23