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| Numerical Study of Three-Dimensional Heat Flow in Friction Stir Welding |
| Research Area | Uncategorized |
| Year | 2008 |
| Authors | N. Al-Aqeeli, C. Suryanarayana, and M. A. Hussein, “Formation of an amorphous phase and its crystallization in the immiscible Nb–Zr system by mechani
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| Journal | Engineering Research Journal |
| Volume | 117 |
| Month | 6 |
| ISSN | |
| Abstract | Friction stir welding (FSW) is a relatively new welding process that may have significant advantages compared to the fusion processes as follow: joining of conventionally non-fusion weldable alloys, reduced distortion and improved mechanical properties of weldable alloys joints due to the pure solid-state joining of metals.
In this paper, A three dimensional numerical model for heat flow in FSW is presented based on finite-difference explicit solution method. The model is constructed to study the effect of the FSW parameter:tool rotational speed, welding speed, tool dimensions on the temperature distribution and peak temperature in the workpiece. Ratios for tool shoulder radius to tool pin radius that produce minimum values of peak temperature in the workpiece have been obtained. Parametric study has been conducted to optimize FSW conditions which yield desired thermal gradient and avoid both overheating and tool breakage. Ranges for the optimal FSW conditions are graphicallypresented. The lower tool shoulder and toolpin radius, the wider range of the optimum FSW. Comparison with the experimental and numerical results from literature shows that the results from the present numerical simulation have good agreement with the test data |
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