Changes in the Properties of Pipe Steel during Cold Deformation in Production of High Strength Profile
Q4 Materials Science
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.
生产高强度型材时钢管在冷变形过程中的性能变化
摘要 本文介绍了在生产高强度型材过程中钢管结构和机械性能变化的研究结果。对变形图和声发射信号的同步分析表明，原始热轧薄板样品和成型钢管的基体金属在变形能力和断裂动力学方面存在差异。研究证实，钢管加工过程中的高冷变形量会导致位错密度增加几个数量级，最高可达 1011 cm-2，从而使金属达到硬化极限并失去塑性边缘，导致相对伸长率急剧下降（2-3 倍）。
本文章由计算机程序翻译，如有差异，请以英文原文为准。
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来源期刊
Steel in Translation
Materials Science-Materials Science (all)
CiteScore
0.60
自引率
0.00%
发文量
81
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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