论文部分内容阅读
根据Smith测定及经作者修正的奥氏体内的活度及作者计算的液态铁碳合金内的活度与碳化铁的热力学函数以及其他必需的关于铁碳稳定平衡的实验及计算数据,作者对铁碳相图的稳定平衡部分作了较全面的分析。作者的计算包括:(i)石墨在铁素体內的溶解度;(ii)铁素体、奥氏体、石墨共析平衡;(iii)奥氏体、铁液、石墨共晶平衡;(iv)δ铁、奥氏体、铁液包晶平衡;(v)奥氏体、铁液二相区域的液相线及固相接。计算结果示于图3,此图与现行铁碳相图颇有不同之处。
According to Smith’s determination and the authors’ revised activity in austenite and the author’s calculations of the activity in the liquid iron-carbon alloy and the thermodynamic functions of the iron carbide as well as the other necessary experimental and computational data on the equilibrium of iron and carbon, The stable equilibrium part of iron carbon phase diagram made a more comprehensive analysis. The author’s calculations include: (i) solubility of graphite in ferrite; (ii) ferrite, austenite, and graphite eutectic equilibrium; (iii) austenite, hot metal, and graphite eutectic equilibrium; ) δ iron, austenite, iron liquid peritectic balance; (v) austenite, molten iron two-phase region of the liquidus and solid phase connection. The calculation results are shown in Figure 3, which is quite different from the current iron carbon phase diagram.