Prediction of Tensile Strength and Optimization of Process Parameters for Friction Stir Welded AZ31B Magnesium Alloy

An attempt has been made to develop an empirical relationship to predict the tensile strength of friction stir welded AZ31B magnesium alloy by incorporating process parameters such as tool rotational speed, welding speed, and axial force. The experiments were conducted based on three factors, three levels of central composite face centred design with a full replications technique. The developed relationship can be effectively used to predict the tensile strength of friction stir welded joints at the 95 per cent confidence level. The results indicate that tool rotational speed has the greatest influence on tensile strength, followed by welding speed and axial force.

[1]  V. Balasubramanian,et al.  Selection of FSW tool pin profile, shoulder diameter and material for joining AZ31B magnesium alloy – An experimental approach , 2009 .

[2]  Livan Fratini,et al.  A continuum based fem model for friction stir welding—model development , 2006 .

[3]  Xinjin Cao,et al.  Microstructure and tensile properties of friction stir welded AZ31B magnesium alloy , 2008 .

[4]  New-Jin Ho,et al.  Electron-beam welding behavior in Mg-Al-based alloys , 2002 .

[5]  Zhang Hua.  Microstructure of friction stir welds in AZ31 magnesium alloy , 2003 .

[6]  L. Murr,et al.  Friction-stir welding of aluminum alloy 2024 to silver , 2000 .

[7]  A. Stern,et al.  Mechanical properties and microstructure of gas tungsten arc welded magnesium AZ91D plates , 2001 .

[8]  L. Murr,et al.  Friction-stir welding of magnesium alloy AZ31B , 2002 .

[9]  V. Balasubramanian,et al.  Influences of Welding Processes on Microstructure, Hardness, and Tensile Properties of AZ31B Magnesium Alloy , 2010 .

[10]  S. Jung,et al.  Joint properties of friction stir welded AZ31B– H24 magnesium alloy , 2003 .

[11]  J. T. Chen,et al.  The finite element simulation of the friction stir welding process , 2005 .

[12]  V. Balasubramanian,et al.  Influences of pin profile and rotational speed of the tool on the formation of friction stir processing zone in AA2219 aluminium alloy , 2007 .

[13]  Seung-Boo Jung,et al.  Mechanical Properties Related to Microstructural Variation of 6061 Al Alloy Joints by Friction Stir Welding , 2004 .

[14]  V. Gunaraj,et al.  Application of response surface methodology for predicting weld bead quality in submerged arc welding of pipes , 1999 .

[15]  Jong-Woong Kim,et al.  The Joint Characteristics of Friction Stir Welded AZ91D Magnesium Alloy , 2003 .

[16]  Sangshik Kim,et al.  Tensile behavior of friction-stir-welded AZ31-H24 Mg alloy , 2005 .

[17]  Radovan Kovacevic,et al.  Material flow and microstructure in the friction stir butt welds of the same and dissimilar aluminum alloys , 2002 .

[18]  Pradeep Kumar,et al.  Effect of evaporative pattern casting process parameters on the surface roughness of Al–7% Si alloy castings , 2007 .

[19]  Wang Xun-hong,et al.  Microstructure and properties of friction stir butt-welded AZ31 magnesium alloy , 2006 .

[20]  Seung-Boo Jung,et al.  The joint properties of dissimilar formed Al alloys by friction stir welding according to the fixed location of materials , 2003 .