Academic Journal
Effect of AC/DC mixed current waveform on surface oxidation, microstructure and mechanical properties of TIG welded TC4 titanium alloy
| العنوان: | Effect of AC/DC mixed current waveform on surface oxidation, microstructure and mechanical properties of TIG welded TC4 titanium alloy |
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| المؤلفون: | Gao, Yihao, Chen, Yunhao, Ren, Boqiao, Sui, Xinchen, Zhao, Xiaohui, Fan, Chenglei, Chen, Chao |
| المساهمون: | National Natural Science Foundation of China |
| المصدر: | Materials Science and Technology ; ISSN 0267-0836 1743-2847 |
| بيانات النشر: | SAGE Publications |
| سنة النشر: | 2024 |
| الوصف: | Coarse β-grains and severe surface oxidation are major factors plaguing the comprehensive properties of tungsten inert gas (TIG) welded joints of titanium alloy. To improve the performance of welded joints, a novel current waveform, alternating current/direct current (AC/DC) mixed current waveform which was named Mix-TIG was proposed. In Mix-TIG, the oxide film on the weld surface is broken up by the cathodic crushing effect. Cyclic variations of the current waveform produce stronger arc stirring and more intense oscillations in the molten pool which results in grain refinement. In addition, the lower temperature gradient in the melt pool due to the smaller heat input in Mix-TIG also contributes to grain refinement. The elongation and microhardness of the Mix-TIG were increased. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| DOI: | 10.1177/02670836241253012 |
| الاتاحة: | http://dx.doi.org/10.1177/02670836241253012 https://journals.sagepub.com/doi/pdf/10.1177/02670836241253012 https://journals.sagepub.com/doi/full-xml/10.1177/02670836241253012 |
| Rights: | https://journals.sagepub.com/page/policies/text-and-data-mining-license |
| رقم الانضمام: | edsbas.4F56B8A0 |
| قاعدة البيانات: | BASE |
| DOI: | 10.1177/02670836241253012 |
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