The effect of amorphous nanocrystalline inoculants on structures and properties of high speed steel

作者：Zhao, Jianyong; Cui, Chunxiang^*; Zhang, Qiangxiong; Bai, Lina

来源：Materials Research Express, 2017, 4(6): 066507.

DOI：10.1088/2053-1591/aa75df

• amorphous nanocrystalline inoculants
• T1 HSS
• carbides
• mechanical properties

High speed steel (HSS) is widely used in the production of high-speed cutting tools and roll etc, and the modification method is an effective approach for improving the microstructure and properties of HSS. Fe-Al-Cr-Nb-C-N amorphous nanocrystalline inoculants were fabricated using the method of in situ reaction and rapid solidification. The phase compositions of Fe-Al-Cr-Nb-C-N inoculants were analyzed. And the effect of inoculants on structures and properties of AISI T1 HSS was studied. The results show that the inoculant is a mixture of amorphous and nanometer crystal, and Fe-Al(-Cr) intermetallic compounds are the matrix phases of inoculant, while particulate nitride, carbide and oxide are the important precipitation. After modification, the quenching and tempering microstructure of HSS has been refined significantly. The carbides contents increase and the sizes of carbides decrease in HSS. The hardness, red-hardness, wear resistance and impact toughness of T1 HSS were also improved obviously after modification.

• 出版日期2017-6
• 单位河北工业大学