文献类型：期刊文献

英文题名：Coarsening Behavior of Particles in Fe-O-Al-Ca Melts

作者：Wang, Linzhu Li, Junqi Yang, Shufeng Chen, Chaoyi Jin, Huixin Li, Xiang

第一作者：Wang, Linzhu

通信作者：Li, JQ[1];Yang, SF[2]

机构：[1]Guizhou Univ, Sch Met & Mat, Guiyang 550025, Guizhou, Peoples R China;[2]Univ Sci & Technol Beijing, Sch Met & Ecol Engn, Beijing 100083, Peoples R China;[3]Guizhou Inst Technol, Coll Mat & Met Engn, Guiyang 550003, Guizhou, Peoples R China

第一机构：Guizhou Univ, Sch Met & Mat, Guiyang 550025, Guizhou, Peoples R China

通信机构：corresponding author), Guizhou Univ, Sch Met & Mat, Guiyang 550025, Guizhou, Peoples R China;corresponding author), Univ Sci & Technol Beijing, Sch Met & Ecol Engn, Beijing 100083, Peoples R China.

年份：2019

卷号：9

期号：1

外文期刊名：SCIENTIFIC REPORTS

收录：;Scopus(收录号：2-s2.0-85062626154);WOS:【SCI-EXPANDED(收录号:WOS:000460391500053)】；

基金：Support of this work by the National Science Foundation of China (Nos 51804086, 51574190, 51704085, 51474079, 51774102, 51574095 and 51564003), Program Foundation for Talents of Guizhou University (No. 2017(05)), Science and technology planning project of Guizhou (No. [2017]5626, [2017]5788), Project with Guizhou Education Department (KY (2015)334), Talent team of Cooperation Project with Guizhou Technology Department ((2015)4005), the National Natural Science Foundation of Guizhou Province (No. [2018]1060) and Program Foundation for Talents of Education department of Guizhou Provinc (No. Qian Jiao He [2018]105) are gratefully acknowledged.

语种：英文

摘要：The characteristics of particles greatly affect the microstructure and performance of metallic materials, especially their sizes. To provide insight into coarsening phenomena of particles in metallic melts, Fe-O-Al-Ca melt with calcium aluminate particles was selected as a model system. This study uses HT-CSLM, SEM detections and stereological analysis to probe the behavior of particles and their characteristics including size, number density, volume fraction, spreading of particle size, inter-surface distance and distribution of particles. Based on the experimental evidence and calculation of collision, we demonstrate that the coarsening of inclusion particles is not only dependent on the Ostwald growth as studied in previous study, but also on the particle coagulation, and floatation. The collision of particles affects the maximum size of the particles during whole deoxidation process and dominates the coarsening of particles at later stage of deoxidation under the condition without external stirring in Fe-O-Al-Ca melts. The factors influencing collision behaviors and floating properties were also analyzed, which is corresponding to coarsening behavior and change of particle characteristic in the melts with different amounts of Ca addition. Such coarsening mechanism may also be useful in predicting the size of particles in other metallic materials.