R. R. Adigamov, V. A. Andreev, S. O. Rogachev, N. Yu. Tabachkova, E. S. Fedotov, V. S. Yusupov
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引用次数: 0
Abstract
The results of a study of changes in the structure and mechanical properties of pipe steel during the production of high-strength profiles are presented. A simultaneous analysis of deformation diagrams and acoustic emission signals shows differences in the deformability and fracture kinetics of the original hot-rolled sheet samples and the base metal of the formed pipe. It is established that high amount of cold deformation during pipe processing cause an increase in the dislocation density by several orders of magnitude up to 1011 cm–2, as a result of which the metal reaches its hardening limit and loses its plasticity margin, which causes a sharp (2–3 times) decrease in relative elongation.
期刊介绍：
Steel in Translation is a journal that represents a selection of translated articles from two Russian metallurgical journals: Stal’ and Izvestiya Vysshikh Uchebnykh Zavedenii. Chernaya Metallurgiya . Steel in Translation covers new developments in blast furnaces, steelmaking, rolled products, tubes, and metal manufacturing as well as unconventional methods of metallurgy and conservation of resources. Papers in materials science and relevant commercial applications make up a considerable portion of the journal’s contents. There is an emphasis on metal quality and cost effectiveness of metal production and treatment.
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