| Q460C钢板力学性能不合格原因分析 |
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| 引用本文： | 孙胜英,张志杰,靳芳芳,张海旺.Q460C钢板力学性能不合格原因分析[J].理化检验(物理分册),2011(2):120-122. |
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| 作者姓名： | 孙胜英 张志杰 靳芳芳 张海旺 |
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| 作者单位： | 邯郸钢铁集团有限责任公司技术中心; |
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| 摘 要： | 利用光学显微镜和扫描电子显微镜分析了某厂生产的多个批次Q460C钢板力学性能低于GB/T 1591-2008技术要求的原因.结果表明:钢板中心偏析造成的贝氏体组织、微裂纹、MnS以及铌和钛复合夹杂物的存在是导致该Q460C钢板力学性能不合格的主要原因;另轧制工艺控制不当造成的魏氏体组织也会降低钢板的力学性能.
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| 关 键 词： | Q460C钢板 力学性能 贝氏体组织 魏氏组织 夹杂物 微裂纹 |
Cause Analysis of Unqualified Mechanical Properties of Q460C Steel Plates |
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| SUN Sheng-ying,ZHANG Zhi-jie,JIN Fang-fang,ZHANG Hai-wang.Cause Analysis of Unqualified Mechanical Properties of Q460C Steel Plates[J].Physical Testing and Chemical Analysis Part A:Physical Testing,2011(2):120-122. |
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| Authors: | SUN Sheng-ying ZHANG Zhi-jie JIN Fang-fang ZHANG Hai-wang |
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| Affiliation: | SUN Sheng-ying,ZHANG Zhi-jie,JIN Fang-fang,ZHANG Hai-wang(Technology R & D Department of Handan Iron and Steel Group Co.,Ltd.,Handan 056015,China) |
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| Abstract: | Reasons of mechanical properties of multiple batches of Q460C steel plates produced by a steel plant lower than the requirement of GB/T 1591-2008 were analyzed through optical microscope and scanning electron microscope.The results show that the bainite structure,tiny cracks and MnS inclusions as well as Nb and Ti compound inclusions caused by center segregation were the main reasons for the unqualified mechanical properties of Q460C steel plates.And widmanstatten structure caused by improper rolling techni... |
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| Keywords: | Q460C steel plate mechanical property bainite structure widmanstatten structure inclusion tiny crack |
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