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http://dx.doi.org/10.5781/KWJS.2010.28.4.073

The Effect of Process Variables on Mechanical Properties and Formability in GTA Welds of Commercial Pure Titanium Sheet  

Kim, Jee-Hoon (Department of Materials Science and Engineering, Pusan National University)
Hong, Jae-Keun (Special Alloys Research Group, Korea Institute of Materials Science)
Yeom, Jong-Taek (Special Alloys Research Group, Korea Institute of Materials Science)
Park, Nho-Kwang (Special Alloys Research Group, Korea Institute of Materials Science)
Kang, Chung-Yun (Department of Materials Science and Engineering, Pusan National University)
Publication Information
Journal of Welding and Joining / v.28, no.4, 2010 , pp. 73-80 More about this Journal
Abstract
In this work, the effect of welding variables on weldability of gas tungsten arc(GTA) welding was investigated with experimental analysis for a commercial pure(CP) titanium (Grade.1). The GTA welding tests on sheet samples with 0.5mm in thick were carried out at different process variables such as arc length, welding speed and electrode shape. In order to search an optimum arc length with full penetration, bead- on-plate welding before butt-welding were performed with different arc length conditions. From the bead- on-plate welding results, the optimum condition considering arc stability and electrode loss was obtained in the arc length of 0.8mm. Butt-welding tests based on the arc length of 0.8mm were carried out to achieve the optimum conditions of welding speed and electrode shape. Optimum conditions of welding speed and electrode shape were suggested as 10 mm/s and truncated electrode shape, respectively. It was successfully validated by the microstructural observation, tensile tests, micro-hardness tests and formability tests.
Keywords
GTAW; Commercial pure titanium; Process variables; Arc length; Formability;
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Times Cited By KSCI : 1  (Citation Analysis)
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