| X70管线钢微观组织结构对落锤性能的影响 |
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| 引用本文： | 霍孝新,周平,黄少文,吴会亮,代平.X70管线钢微观组织结构对落锤性能的影响[J].山东冶金,2011(5):99-101,106. |
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| 作者姓名： | 霍孝新 周平 黄少文 吴会亮 代平 |
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| 作者单位： | 莱芜钢铁集团有限公司技术中心; |
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| 摘 要： | 结合12～33mm厚X70管线钢落锤试验结果,利用光学显微镜和扫描电镜研究和分析不同厚度落锤试样的组织演变规律及组织对落锤性能的影响。结果表明：随着钢板厚度的增加,钢的组织由彼此交织在一起的针状铁素体、多边形铁素体/准多边形铁素体演变成粒状贝氏体＋少量针状铁素体/多边形铁素体,碳化物的析出数量和析出尺寸随之增加。具有交织在一起的非等轴状AF＋PF/QF混合组织的试样落锤性能优于以晶粒粗大粒状贝氏体为基体组织的试样的落锤性能。通过控制M/A岛形态和分布可以提高钢的落锤性能。
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| 关 键 词： | X70管线钢 落锤性能 金相组织 |
Effect of the Microstructure on the DWTT Properties of X70 Pipeline Steel |
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| HUO Xiao-xin,ZHOU Ping,HUANG Shao-wen,WU Hui-liang,DAI Ping.Effect of the Microstructure on the DWTT Properties of X70 Pipeline Steel[J].Shandong Metallurgy,2011(5):99-101,106. |
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| Authors: | HUO Xiao-xin ZHOU Ping HUANG Shao-wen WU Hui-liang DAI Ping |
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| Affiliation: | HUO Xiao-xin,ZHOU Ping,HUANG Shao-wen,WU Hui-liang,DAI Ping(The Technology Center of Laiwu Iron and Steel Group Corporation,Laiwu 271104,China) |
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| Abstract: | Based on the DWTT test results of X70 pipeline steels with different thickness from 12 mm to 33 mm,this article studied the microstructure evolution rules of the samples with different thickness and the influences of the microstructure on the DWTT properties by optical microscope and SEM. The results showed that with the plate's thickness increased,the microstructure of X70 steel changed from acicular ferrite and polygonal ferrite/quasi-polygonal ferrite that these grains's boundary intertwined together to ... |
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| Keywords: | X70 pipeline steel drop weight tear tes(tDWTT) properties microstructure |
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