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Microstructure analysis and yield strength simulation in high Co-Ni secondary hardening steel

机译:高钴镍二次淬火钢的组织分析和屈服强度模拟

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摘要

The microstructure of AerMet100 steel after aging was observed and analyzed. Based on the micro-structure information of AerMet100 with different aging temperature, equivalent radius of M_2C carbides was calculated and used in modified Wang's model to simulate the relation between yield strength and aging temperature. The simulation results showed that AerMet100 was mainly strengthened by M_2C precipitate and solid solution. Solid solution strengthening decreased with the increasing of aging temperature because the growth of M_2C and austenite gradually consumed Cr, Mo, Ni and C in the matrix. M_2C strengthening was controlled by the opposite effect of growth rate and nucleation rate of M_2C on strength. By adding the effect of austenite into the model and making simplification, the simulation results of the modified Wang's model were closer to the experiment results than the original Wang's model.
机译:观察和分析了时效后的AerMet100钢的显微组织。根据不同时效温度的AerMet100的微观结构信息,计算出M_2C碳化物的当量半径,并将其用于改进的Wang模型中,以模拟屈服强度与时效温度之间的关系。模拟结果表明,AerMet100主要由M_2C沉淀和固溶体强化。固溶强化随着时效温度的升高而降低,这是因为M_2C和奥氏体的生长逐渐消耗了基体中的Cr,Mo,Ni和C。 M_2C的生长受M_2C的生长速率和成核速率对强度的相反影响而控制。通过在模型中增加奥氏体的影响并简化,修改后的王氏模型的仿真结果比原始王氏模型更接近于实验结果。

著录项

  • 来源
    《Materials Science and Engineering》 |2016年第4期|312-317|共6页
  • 作者单位

    Key Laboratory of Advanced Materials of Ministry of Education, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China;

    Key Laboratory of Advanced Materials of Ministry of Education, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China;

    Key Laboratory of Advanced Materials of Ministry of Education, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China;

    Institute for Structural Materials, Central, Iron and Steel Research Institute, Beijing 100081, China;

    Key Laboratory of Advanced Materials of Ministry of Education, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China ,Institute for Structural Materials, Central, Iron and Steel Research Institute, Beijing 100081, China;

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

    Microstructure; Strength modeling; Aging temperature; Steel;

    机译:微观结构强度建模;老化温度钢;

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