Subshoulder formation during friction stir welding of steel using tungsten alloy tool

References

• Sorensen CD, Nelson TW, Packer SM: ‘Tool material testing for FSW of high-temperature alloys’, Proc. Third Int. Symp. Friction Stir Welding, Kobe, Japan, September 2001, TWI.
   Google Scholar
• Rai R, De A, Bhadeshia HKDH, Debroy T: ‘Review: friction stir welding tools’, Sci. Technol. Weld. Join., 2011, 16, 325–342.
   Web of Science ®Google Scholar
• Bhadeshia HKDH, DebRoy T: ‘Critical assessment: friction stir welding of steels’, Sci. Technol. Weld. Join., 2009, 14, 193–196.
   Web of Science ®Google Scholar
• Fernandez GJ, Murr LE: ‘Characterization of tool wear and weld optimization in the friction-stir welding of cast aluminum 359+20% SiC metal–matrix composite’, Mater. Charact., 2004, 52, 65–75.
   Web of Science ®Google Scholar
• Park SHC, Sato YS, Kokawa H, Okamoto K, Hirano S, Inagaki M: ‘Boride formation induced by pcbn tool wear in friction-stir-welded stainless steels’, Metall. Mater. Trans. A, 2009, 40A, 625–636.
   Web of Science ®Google Scholar
• Bilci MK, Yukler AI: ‘Influence of tool geometry and process parameters on macrostructure and static strength in friction stir spot welded polythene sheets’, Mater. Des., 2012, 33, 145–152.
   Google Scholar
• Hattingh DG, Blignault C, van Niekerk TI, James MN: ‘Characterization of the influences of FSW tool geometry on welding forces and weld tensile strength using an instrumented tool’, J. Mater. Process. Technol., 2008, 203, 46–57.
   Web of Science ®Google Scholar
• Shindo DJ, Rivera AR, Murr LE: ‘Shape optimization for tool wear in the friction stir welding of cast Al 359+20% SiC MMC’, J. Mater. Sci., 2002, 37, 4999–5005.
   Web of Science ®Google Scholar
• Prado RA, Murr LE, Soto KF, McClure JC: ‘Self optimization in tool wear for friction welding of Al 6061+20%Al2O3 MMC’, Mater. Sci. Eng. A, 2003, A349, 156–165.
   Web of Science ®Google Scholar
• Prado RA, Murr LE, Soto KF, Shindo DJ: ‘Tool wear in the friction stir welding of aluminum alloy 6061+20% Al2O3, a preliminary study’, Scr. Mater., 2001, 45, 75–80.
   Web of Science ®Google Scholar
• Fujii H, Cui L, Maeda M, Nogi K: ‘Effect of tool shape on mechanical properties and microstructure of friction stir welded aluminum alloys’, Mater. Sci. Eng. A, 2006, A419, 25–31.
   Web of Science ®Google Scholar
• Madhusudhan Reddy G, Srinivasa Rao K: ‘Enhancement of wear and corrosion resistance of cast A356 aluminium alloy using friction stir processing’, Trans. Indian Inst. Met., 2010, 63, (5), 793–798.
   Google Scholar
• Lorraina O, Favier V, Zahrouni H, Lawrjaniec D: ‘Understanding the material flow path of friction stir welding process using unthreaded tools’, J. Mater. Process. Technol., 2010, 210, 603–609.
   Google Scholar
• Choi DH, Lee CY, Ahn BW, Choi JH, Yeon YM, Song K, Park HS, Kim YJ, Yoo CD, Jung SB: ‘Frictional wear evaluation of WC–Co alloy tool in friction stir spot welding of low carbon steel plates’. Int. J. Refract. Met. Hard Mater., 2009, 27, 931–936.
   Web of Science ®Google Scholar
• Miller ScottF: ‘Tool wear in friction drilling’, Int. J. Mach. Tools Manuf., 2007, 47, 1636–1645.
   Web of Science ®Google Scholar
• Liu HJ, Feng JC, Fujii H, Nogi K: ‘Wear characteristics of a WC–Co tool in friction stir welding of AC4AC30 vol%SiCp composite’, Int. J. Mach. Tools Manuf., 2005, 45, 1635–1639.
   Web of Science ®Google Scholar
• DebRoy T, Bhadeshia HKDH: ‘Friction stir welding of dissimilar alloys – a perspective’, Sci. Technol. Weld. Join., 2010, 15, 266–270.
   Web of Science ®Google Scholar
• Edwards PD, Ramulu M: ‘Investigation of microstructure, surface and subsurface characteristics in titanium alloy friction stir welds of varied thicknesses’, Sci. Technol. Weld. Join., 2009, 14, 476–483.
   Web of Science ®Google Scholar
• Pradeep A, Muthukumaran S: ‘An analysis to optimize the process parameters of friction stir welded low alloy steel plates’, Int. J. Eng. Sci. Technol., 2013, 5, (3), 25–35.
   Google Scholar
• Muthukumaran S, Mukherjee SK: ‘Two modes of metal flow phenomenon in friction stir welding process’, Sci. Technol. Weld. Join., 2006, 11, 337–340.
   Web of Science ®Google Scholar