Influence of V-N Microalloying on the High-Temperature Mechanical Behavior and Net Crack Defect of High Strength Weathering Steel

Jiasheng Qing; Lei Wang; Kun Dou; Bao Wang; Qing Liu

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Influence of V-N Microalloying on the High-Temperature Mechanical Behavior and Net Crack Defect of High Strength Weathering Steel

机译：V-N微合金化对高强度耐候钢高温力学性能和净裂纹缺陷的影响

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摘要

The influence of V-N microalloying on the high-temperature mechanical behavior of high strength weathering steel is discussed through thermomechanical simulation experiment. The difference of tensile strength caused by variation of [%V][%N] appears after proeutectoid phase change, and the higher level of [%V] [%N] is, the stronger the tensile strength tends to be. The ductility trough apparently becomes deeper and wider with the increase of [%V][%N]. When the level of [°/oV][%N] reaches to 1.7 × 10~(-3), high strength weathering steel shows almost similar reduction of area to 0.03% Nb-containing steel in the temperature range of 800-900℃, however, the ductility trough at the low-temperature stage is wider than that of Nb-containing steel. Moreover, the net crack defect of bloom is optimized through the stable control of N content in low range under the precondition of high strength weathering steel with sufficient strength.

机译：通过热力学模拟实验，探讨了钒氮微合金化对高强度耐候钢高温力学性能的影响。在共析相变之后，由[％V] [％N]的变化引起的拉伸强度的差异出现，并且[％V] [％N]的含量越高，拉伸强度倾向于越强。延展性槽随着[％V] [％N]的增加而变得越来越深。当[°/ oV] [％N]达到1.7×10〜（-3）时，在800-900℃的温度范围内，高强度耐候钢的面积减少几乎与含0.03％Nb的钢相似。但是，低温阶段的延性谷宽于含Nb的钢。此外，在高强度耐候钢具有足够强度的前提下，通过在低范围内稳定控制氮含量，可以优化大方坯的净裂纹缺陷。

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来源
《High temperature materials and processes》 |2016年第6期|575-582|共8页
作者
Jiasheng Qing; Lei Wang; Kun Dou; Bao Wang; Qing Liu;
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作者单位

State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, 30 Xueyuan Road, Haidian District, Beijing 100083, China;

State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, 30 Xueyuan Road, Haidian District, Beijing 100083, China;

State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, 30 Xueyuan Road, Haidian District, Beijing 100083, China;

State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, 30 Xueyuan Road, Haidian District, Beijing 100083, China;

State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, 30 Xueyuan Road, Haidian District, Beijing 100083, China;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
原文格式 PDF
正文语种 eng
中图分类
关键词
weathering steel; V-N microalloying; hot ductility; bloom; net crack;

机译：耐候钢V-N微合金化;热延展性盛开;净裂纹;

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Influence of V-N Microalloying on the High-Temperature Mechanical Behavior and Net Crack Defect of High Strength Weathering Steel

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