中南大学学报（自然科学版）2025，Vol.56Issue(12)：5025-5033,9.DOI:10.11817/j.issn.1672-7207.2025.12.008
旋转锻造加工W-Ni-Fe-Co-ZrO2合金的渗碳工艺研究
Carburizing process of W-Ni-Fe-Co-ZrO₂ alloy processed by rotary forging
摘要
Abstract
High-density tungsten alloys are composed primarily of tungsten(with a tungsten content of 85%to 99%),and small amounts of elements such as Ni,Fe,Co,Cu,Mo,Cr,Mn,etc.They possess characteristics of high density,high strength,and high elastic modulus,making them widely used in fields such as national defense,nuclear industry,and aerospace.In this study,W-Ni-Fe-Co-ZrO2 high-density tungsten alloy was prepared using a powder metallurgy method,followed by rotary forging deformation strengthening and carburizing treatment.The results show that after carburizing heat treatment,carbides such as WC are formed on the surface of the tungsten alloy,significantly improving its surface hardness.The microstructure of the carburized tungsten alloy includes a WC layer,shell-like regions,and a core structure.As the carburizing temperature increases,the thickness of the carburized layer gradually increases,but the core structure undergoes a recovery process,leading to a decrease in mechanical properties.The higher the carburizing temperature,the greater the degree of recovery in the core structure and the more significant the decrease in performance.After carburizing at 800℃for 20 h,a carburized layer of 121.05 μm thickness is formed on the surface of the tungsten alloy,significantly enhancing the surface hardness while maintaining good mechanical properties.关键词
表面渗碳/旋锻态钨合金/渗碳温度/显微组织/力学性能Key words
surface carburizing/rotary swaging tungsten alloy/carburizing temperature/microstructure/mechanical properties分类
矿业与冶金引用本文复制引用
熊威,李小强,蒋旗,徐港来,屈盛官,于洋..旋转锻造加工W-Ni-Fe-Co-ZrO2合金的渗碳工艺研究[J].中南大学学报（自然科学版）,2025,56(12):5025-5033,9.基金项目
装备配套科研项目(x2jqA2240140)(Project(x2jqA2240140)supported by the Research Program on Equipment Supporting) （x2jqA2240140）
