Effect of Pulsed Current TIG Welding Parameters on Pitting Corrosion Behaviour of AA6061 Aluminium Alloy

作     者：T.Senthil Kumar V.Balasubramanian M.Y.Sanavullah S.Babu 

作者机构：Department of Automobile TechnologyBharathidasan UniversityTiruchirappalli 620 024India Department of Manufacturing EngineeringAnnamalai UniversityAnnamalainagar 608 002India PrincipalV.M.K.V.Engineering CollegeSalem 636 308India 

出 版 物：《Journal of Materials Science & Technology》 (材料科学技术（英文版）)

年 卷 期：2007年第23卷第2期

页      面：223-229页

核心收录：

学科分类：080503[工学-材料加工工程] 0817[工学-化学工程与技术] 0806[工学-冶金工程] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 0802[工学-机械工程] 0801[工学-力学（可授工学、理学学位）] 0702[理学-物理学] 080201[工学-机械制造及其自动化] 

基　　金：Defence Research &Development Organization (DRDO), New Delhi for the financial the Department of Manufacturing Engineering, Annamalai University for extending the facilities of Metal Joining Laboratory and Material Testing Laboratory to carryout this investigation 

主　　题：Pulsed current Tungsten inert gas welding Medium strength aluminium alloy Pitting corrosion Design of experiments Analysis of variance 

摘      要：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 *** 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 *** 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.