科研之友
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摘要
The aim of this study is to investigate the effect of keeping constant the tool rotational speed to the welding speed ratio (nu ratio) on the mechanical properties of the dissimilar friction stir welding of EN AW6082-T6 and EN AW5083-H111. Two different pins shaped as triangular and pentagonal were associated with the constant nu ratio. From the tensile test results, it was found that the nu ratio does not create an evident change in the weld joint strength. The small cavity-and tunnel-type defects were observed at the nugget zone and located on the advancing side of the pin. These defects caused a decrease in the strength and elongation of the weld joint. The most important inference obtained from the experimental results is that if the nu ratio is kept constant, the weld joint strength for each weld does not correspond to a constant value.
- 出版日期2017-1
