Effect of Manganese on Solidification Structure of High Boron Iron-Based Alloy 在线阅读 下载PDF
Author of the article:CHEN Jin;WU Run;XU Kai;ZENG Songsheng
Author's Workplace：School of Materials and Metallurgy, Wuhan University of Science and Technology, Wuhan 430081, China;Technology Center, Valin Arcelor Mittal Auto Sheet Co., Ltd., Loudi 417000, China
Key Words：ferroboron-based alloy solidification manganese boride
Abstract：
High boron wear-resistant alloy steels with manganese content of 2%, 4%, 6%, 8% and 10% were designed, the effects of solidification process and manganese content on the as-cast microstructure and mechanical properties of casting were studied. The results show that the as-cast microstructure of high boron wear-resistant alloy is composed of dendritic matrix and eutectic microstructure (y+boride). With the increase of manganese content, the content of dendritic matrix decreases, but the content of borocarbon does not change. With the increase of manganese content, the hardness of the materials changes within the range of HRC 45-65, showing a trend of increasing first and then decreasing. The impact toughness fluctuates between 1.5-3.0 J/cm^2, showing a trend of decreasing first and then increasing.
