Control of Inclusions in 49MnVS3 Non-Quenched and Tempered Steel by Mg Treatment
作者单位：Center for Advanced Solidification Technology (CAST) School of Materials Science and Engineering Shanghai University
会议日期：2022年
学科分类：08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）]
关 键 词：Mg Treatment Non-Quenched and Tempered Steel Sulfide Composite Inclusions Gleeble
摘 要：To explore the effect of different Mg contents on the morphology, composition, distribution, and deformation of sulfides in 49MnVS3 non-quenched and tempered steel, the inclusions were observed and counted by Zeiss metallographic microscope and scanning electron microscope, and the inclusions in the compressed samples were compared by Gleeble-3500 thermal simulation test machine. Results showed that the size of sulfide in steel decreases and the distribution uniformity of sulfide are significantly improved with the increase of Mg content. The proportion of composite inclusions in steel increases obviously, and the proportion of individual MnS decreases. The composition of the included core is in accordance with the principle of AlO → AlO + MgO·AlO → MgO·AlO + MgO → MgO → MgO + MgS. After Gleeble compression, the aspect ratio of sulfide inclusions decreases, and the spindle ratio h increases significantly.