Thermodynamic Calculation and Analysis on Equilibrium Phases Transformation in SA508-3 Steel

陈红宇; 刘正东; 林肇杰; 周芸

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Thermodynamic Calculation and Analysis on Equilibrium Phases Transformation in SA508-3 Steel

更新时间：2026-01-21

- Thermodynamic Calculation and Analysis on Equilibrium Phases Transformation in SA508-3 Steel
- Special Steel Vol. 28, Issue 2, Pages: 19-21(2007)
- 作者机构：
  
  1. 昆明理工大学材料与冶金工程学院,昆明,650093
  2. 钢铁研究总院结构材料研究所,北京,100081
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Received：18 September 2006，
  
  Online First：09 March 2023，
  
  Published：09 March 2007
- 稿件说明：
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陈红宇, 刘正东, 林肇杰, et al. Thermodynamic Calculation and Analysis on Equilibrium Phases Transformation in SA508-3 Steel[J]. Special Steel, 2007, 28(2): 19-21.
DOI：

陈红宇, 刘正东, 林肇杰, et al. Thermodynamic Calculation and Analysis on Equilibrium Phases Transformation in SA508-3 Steel[J]. Special Steel, 2007, 28(2): 19-21. DOI：

摘要

采用Thermo-Calc热力学软件计算了SA508-3钢(％:0．19C、0．01-0．22Si、1．40-1．58Mn、0．65- 0．76Ni、0．50-0．55Mo)的析出相、析出温度和各相的含量

并研究了Si和Mn-Ni-Mo含量对该钢析出相的影响。计算结果表明

SA508-3钢平衡态的析出相主要为合金渗碳体、M7C3及Mo的碳化物。Si含量变化对钢中各相析出温度和析出量无显著影响。随Mo含量降低

钢中脆性相析出减少

但对合金渗碳体析出无显著影响。SA508-3钢最佳回火温度为643-678℃。

Abstract

Precipitated phases

precipitated temperature and each phase content in SA508-3 steel -0. 19C

0.01~ 0.22Si

1.40~1.58Mn

0.65~0.76Ni

0.50～0.55Mo have been calculated by using Thermo-Calc thermodynamic soft- ware

and effect of Si and Mn-Ni-Mo content on precipitated phases in the steel was studied. The calculated results show that main equilibrium precipitates in SA508-3 steel are alloying cementite

C₃ and Mo carbide. There is no obvious effect of Si content change on precipitated temperature and precipitated amount of each phase. With increasing Mo content the brittle precipitated phases decreased while there is not obvious effect on alloying cementite precipitates. The optimum tempering temperature for SA508-3 steel is 643~678℃.

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