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Effects of Temperature and Oxygen Concentration on the Characteristics of Decarburization of 55SiCr Spring Steel

机译：温度和氧浓度对55SiCr弹簧钢脱碳特性的影响

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摘要

Effects of temperature and oxygen concentration on decarburization of 55SiCr spring steel were investigated at the temperature range of 500℃-1200℃ by using a Muffle furnace (an atmosphere of ambient air) and a Simultaneous Thermal Analyzer (low oxygen concentration with 2% O_2 and 98% N_2). In ambient air, the decarburization behavior can be divided roughly into five temperature ranges: T≥1 200℃, no decarburization; TG (A_3 for 55SiCr when its carbon concentration equals to zero)＜T＜1200℃, partial decarburization; A_3＜T＜TG, complete and partial decarburization; T＜A_3, complete decarburization; T＜A_l, no decarburization. However, it is observed that complete decarburization did not occur in all the testing temperature ranges under low oxygen concentration. For 55SiCr spring steel, decarburization behavior under low oxygen concentration can be divided into two regions: T＜700℃, no decarburization; T＞700℃, only partial decarburization. Lower oxygen concentration results in decrease in a growth rate of the oxide scale and leads to different characteristics of decarburization.
机译：使用马弗炉（环境空气气氛）和同时热分析仪（低氧浓度，2％O_2和20％氧气）研究温度和氧气浓度对500℃-1200℃温度范围内55SiCr弹簧钢脱碳的影响。 98％N_2）。在环境空气中，脱碳行为大致可分为五个温度范围：T≥1200℃，不脱碳； TG（碳浓度为零时55SiCr的A_3）＜T ＜1200℃，部分脱碳； A_3 ＜T ＜TG，部分脱碳； T ＜A_3，完全脱碳； T ＜A_1，不脱碳。但是，观察到在低氧浓度下，在所有测试温度范围内都没有发生完全脱碳。对于55SiCr弹簧钢，在低氧浓度下的脱碳行为可分为两个区域：T ＜700℃，不脱碳。 T＞ 700℃，仅部分脱碳。较低的氧浓度导致氧化物垢的生长速率降低并且导致脱碳的不同特性。

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  • 来源
    《ISIJ international》 |2014年第8期|1920-1926|共7页
  • 作者

    Yangbo LIU; Wei ZHANG; Qian TONG; Lifeng WANG;

  • 作者单位

    Shougang Research Institute of Technology, No 69, Yangzhuang Street, Shijingshan District, Beijing, 100043 China;

    Shougang Research Institute of Technology, No 69, Yangzhuang Street, Shijingshan District, Beijing, 100043 China;

    Shougang Research Institute of Technology, No 69, Yangzhuang Street, Shijingshan District, Beijing, 100043 China;

    Shougang Research Institute of Technology, No 69, Yangzhuang Street, Shijingshan District, Beijing, 100043 China;

  • 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

    55SiCr spring steel; complete decarburization; partial decarburization; oxygen concentration; growth rate of oxide scale;

    机译：55SiCr弹簧钢;完全脱碳;部分脱碳氧气浓度氧化皮生长速率;

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