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首页> 外文期刊>ISIJ international >Influence of Carbon Segregation to Dislocations on Thermal Desorption Spectrum of Hydrogen in Medium Carbon Martensitic Steels
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Influence of Carbon Segregation to Dislocations on Thermal Desorption Spectrum of Hydrogen in Medium Carbon Martensitic Steels

机译：中碳马氏体钢中碳偏析对位错的氢热解吸谱的影响

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摘要

A computer program was developed to simulate competitive hydrogen trapping and carbon segregation to the trap site which are often referred to site competition, and the spectra of medium carbon martensitic steels, which were analyzed previously assuming a single trap energy, were re-examined. The McNabb-Foster equations in which carbon segregation was treated as trapping to the defect site were solved simultaneously incorporating a phenomenological interaction coefficient between hydrogen and carbon within the trap site. Assuming that the primary trap site of hydrogen was dislocation, experimental TDA peaks, 50-100℃ lower than those of heavily deformed pure iron, were reproduced well both in height and width with a narrow range of the interaction coefficient no matter hydrogen was charged at room temperature or high temperature, i.e. prior to martensitic transformation. Due to relatively faster segregation kinetics of carbon the peak temperature does not appear to be sensitive to the carbon content or the carbon occupancy prior to thermal desorption analysis in medium carbon steels.
机译：开发了一个计算机程序来模拟竞争性的氢捕获和碳向阱位点的偏析，这通常被称为位点竞争，并且重新检查了以前假设为单个阱能的情况下分析的中碳马氏体钢的光谱。同时解决了将碳偏析视为被捕集到缺陷部位的McNabb-Foster方程，同时结合了捕集部位中氢和碳之间的现象学相互作用系数。假设氢的主要俘获位点是位错，则无论氢原子在何处带电，在高度和宽度上均能很好地再现实验TDA峰，该峰比高度变形的纯铁低50-100℃。室温或高温，即马氏体相变之前。由于碳的分离动力学相对较快，因此在中碳钢中进行热脱附分析之前，峰值温度似乎对碳含量或碳占有率不敏感。

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  • 来源
    《ISIJ international》 |2013年第1期|131-138|共8页
  • 作者

    Lin CHENG; Masato ENOMOTO; Daisuke HIRAKAMI; Toshimi TARUI;

  • 作者单位

    Graduate School of Science and Engineering, Ibaraki University, 4-12-1, Nakanarusawa, Hitachi, 316-8511 Japan;

    Department of Materials Science and Engineering, Ibaraki University, 4-12-1, Nakanarusawa, Hitachi, 316-8511 Japan;

    Kimitsu R & D Lab., Nippon Steel Corporation, 1 Kimitsu, Kimitsu, 299-1141 Japan. Now at Nippon Steel & Sumitomo Metal Corporation;

    Steel Research Laboratories, Nippon Steel Corporation, 20-1, Shintomi, Futtsu, 293-8511 Japan. Now at Nippon Steel & Sumitomo Metal Corporation;

  • 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);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    hydrogen; thermal desorption analysis; martensitic steel; carbon segregation; dislocation;

    机译：氢;热脱附分析;马氏体钢碳隔离错位;

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