Effect of atmospheric pressure on physical parameters of steels and solidification conditions during PESR process:a review

• 作者: Yusuf Abba Yusuf Wan-ming Li Shi-shen Li Hua-bing Li Xi-min Zang
• 来源期刊: 钢铁研究学报（英文版）
• 年，卷（期）: 2021,（12）
• 所属期刊栏目: REVIEWS
• 页码范围: 1504-1514
• 页数: 11页
• 语种: 英文

摘要

The pressurized electroslag remelting (PESR) process has a remarkable impact on manufacturing high nitrogen steels,which can alter the physical parameters of steels and solidification conditions at different atmospheric pressures.The principle and applications of the PESR process are reviewed.The effect of atmospheric pressure,including Gibbs free energy,nitrogen solubility,melting point,viscosity,diffusion coefficient,partition coefficient,and nucleation rate,is explicitly expressed by empirical knowledge and quantified by thermodynamic relationships.The variation of interracial heat transfer coefficient is discussed at different atmospheric pressures.Furthermore,the effect of atmospheric pressure on physical parameters of steels and solidification conditions during the PESR process is still in their embryonic research stage and it is important to do further study in this research field.Finally,a general concluding remark and suggestions for future development are proposed.