文献类型：期刊文献

英文题名：Enhanced Cutting Performance of 50Cr15MoV Martensitic Stainless Steel Through Controlled Residual Austenite Stability

作者：Guo, Fujian[1,2];Peng, Zhimin[2,3];Lu, Guangyi[2];Liu, Wenle[2,4];Li, Guoqing[2];Zhang, Pan[1];Shang, Chengjia[2,4]

机构：[1]Guangdong Ocean Univ, Sch Mat Sci & Engn, Yangjiang 529500, Peoples R China;[2]Guangdong Ocean Univ, Yangjiang Adv Alloys Lab, Yangjiang 529500, Peoples R China;[3]Guangdong Univ Technol, Sch Mat & Energy, Guangzhou 510000, Peoples R China;[4]Univ Sci & Technol Beijing, State Key Lab Adv Met & Mat, Beijing 100083, Peoples R China

年份：2025

卷号：15

期号：1

外文期刊名：METALS

收录：SCI-EXPANDED(收录号：WOS:001404558900001)、、Scopus(收录号：2-s2.0-85216111926)、WOS

基金：This research was funded by the Key Industry Talent Revitalization Project of Alloy Materials and Hardware Knife and Scissors in Yangjiang, grant number RCZX2023012 and Scientific Research Start-up Project of Guangdong Ocean University 360302032201.

语种：英文

外文关键词：residual austenite stability; cutting performance; SHPB; fault substructure

外文摘要：The relationship between the stability of tool materials and their cutting performance is a critical technical challenge for the manufacturing industry, which is essential for selecting appropriate treatment processes to achieve superior treatment tool performance. In this paper, a standard cutting tool experiment was used to study the sharpness of the knife with different residual austenite content. The cutting edges of the knife were characterized by an optical microscope (OM), scanning electron microscope (SEM), electron back scattering diffraction (EBSD), and transmission electron microscope (TEM), to analyze the relationship between tool edge hardness and microstructure. The microstructure stability of the material was analyzed by a separated Hopkinson pressure bar (SHPB) experiment. The results show that the hardness and cutting performance of the knives are affected by the joint action of carbide and residual austenite, with an initial increase followed by decreases as the heat treatment quenching temperature increases. After the knife material is treated by cryogenic process, the hardness of the knife is increased by 3.89 HRC, the initial sharpness by 15.3%, and the sharpness and durability by 18.8%. The residual austenite in the knives was found to be unstable and easy to transformation during high-rate deformation processes. This study elucidates the effect of residual austenite content on the sharpness of the knives, providing a foundation for the reasonable control of residual austenite content in the actual production settings.