| ����HRB400�ֽ�������������о� |
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| 引用本文： | 郭湛,完卫国,孙维,周庆成,吴科成. ����HRB400�ֽ�������������о�[J]. 物理测试, 2010, 28(1): 13-13 |
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| 作者姓名： | 郭湛 完卫国 孙维 周庆成 吴科成 |
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| 作者单位： | ������ɽ�����ɷ�����˾�������ij����о��� |
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| 摘 要： | 对HRB400（Nb）钢筋出现无屈服和延伸率低的原因进行了研究，结果表明钢中贝氏体含量较高是导致其出现无屈服现象的主要原因，而C、Mn含量同时偏高、冷却速度快又是贝氏体形成的主要原因。通过对C、Mn含量以及冷却速度的控制，HRB400(Nb)无屈服现象得到改善。
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| 关 键 词： | HRB400(Nb) ������ �����ʵ� ������ |
| 收稿时间： | 2009-10-21; |
Study on Non-Yield of HRB400(Nb) Steel Bar |
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| GUO Zhan,WAN Wei-guo,SUN Wei,ZHOU Qing-cheng,WU Ke-cheng. Study on Non-Yield of HRB400(Nb) Steel Bar[J]. Physics Examination and Testing, 2010, 28(1): 13-13 |
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| Authors: | GUO Zhan WAN Wei-guo SUN Wei ZHOU Qing-cheng WU Ke-cheng |
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| Affiliation: | GUO Zhan,WAN Wei-guo,SUN Wei,ZHOU Qing-cheng,WU Ke-cheng(Technology Center of Ma'AnShan Iron&Steel Co Ltd,Ma'AnShan,243000 AnHui,China) |
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| Abstract: | Reasons of non-yield and lower elongation of HRB400(Nb) steel bar were studied.The results showed that the main reason was high content of bainite in steel,high content of C and Mn and rapid cooling rate were main reasons for formation of bainite.Non-yield of HRB400(Nb) was improved by controlling content of C and Mn and cooling rate. |
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| Keywords: | HRB400(Nb) non-yield lower elongation bainite |
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