Determination of the liquidus and solidus temperatures of FeCrAl stainless steel

• Published in: International journal of minerals, metallurgy and materials Vol. 22; no. 11; pp. 1141 - 1148
• Main Authors: Han, Zhi-biao, Liu, Jian-hua, He, Yang, Li, Kang-wei, Ji, Yi-long, Liu, Jian
• Format: Journal Article
• Language: English
• Published: Beijing University of Science and Technology Beijing 01.11.2015; Springer Nature B.V; Research Institute of Metallurgy Engineering, University of Science and Technology Beijing, Beijing 100083, China
• Subjects: Calorimetry; Ceramics; Characterization and Evaluation of Materials; Chemistry and Materials Science; Composites; Corrosion and Coatings; Deviation; Differential scanning calorimetry; Empirical analysis; Glass; Liquidus; Materials Science; Metallic Materials; Natural Materials; Solidus; Stainless steels; Surfaces and Interfaces; Theoretical analysis; Thermo-Calc软件; Thin Films; Tribology; 不锈钢; 固相线; 差示扫描量热法; 测定; 液相线温度; 经验公式; 计算结果; ferritic stainless steel; solidus temperature; liquidus temperature; differential scanning calorimetry
• ISSN: 1674-4799; 1869-103X
• DOI: 10.1007/s12613-015-1178-8

The liquidus and solidus temperatures of FeCrAl stainless steel were determined by differential scanning calorimetry（DSC） at different heating rates. They were also calculated by Thermo-calc software and empirical formulae separately. The accuracy of calculation results was assessed by comparison with the corresponding DSC results. The liquidus temperatures calculated by empirical formulae, which exhibited a maximum deviation of 8.6℃ were more accurate than those calculated using Thermo-calc, which exhibited a maximum deviation of 12.11℃. On the basis of Thermo-calc calculations performed under the Scheil model, the solidus temperature could be well determined from solid fraction（fS） vs. temperature（t） curves at fS = 0.99. Furthermore, a theoretical analysis to determine the solidus temperature with this method was also provided.