نوع مقاله : مقاله پژوهشی
نویسندگان
دانشگاه صنعتی نوشیروانی بابل
چکیده
کلیدواژهها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
The results of the research conducted by the researchers have shown that the application of electric current to the metal during deformation can lead to the improvement of the plasticity of the material. This method is known as forming with the help of electricity. In this article, the electroplastic effect on the strain behavior of 6061-T6 aluminum alloy sheet has been investigated experimentally through the uniaxial tensile test. For this purpose, tensile test samples were cut from a 6061-T6 aluminum alloy sheet with a thickness of 1 mm according to ASTM E8/E8M standard. Then it was examined in the state of no current and in the intensity of currents of 260, 360 and 460 amperes until the appropriate intensity of current is obtained. The results have shown that at a current intensity of 360 amps, the amount of extension in the sample increases compared to the state without current. In addition, a comparison was made between the results of two square and sinusoidal waveforms and it was shown that the sinusoidal waveform has a greater effect on increasing formability. The on and off time of the pulse was also investigated and it was determined that the maximum extension is created in the off time of 20 ms and the on time of 120 µs. Finally, the sample was annealed and the test was repeated with the obtained parameters. The results showed that by applying an electric pulse with appropriate parameters, the formability of 6061-T6 aluminum samples is improved by 23%.
کلیدواژهها [English]
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