摘要
对不同铜含量的钢在表面氧化过程中铜的富集规律进行了研究。研究结果表明:钢的热加工性能与钢中铜含量有着密切联系。残余铜含量越高,晶界与基体界面氧化腐蚀越严重,热脆性倾向越大;热加工时间越长,液态富铜相渗透晶界越深,分布面越宽,晶界富集量越多;热加工温度越高,晶内、晶界氧化越剧烈。合理地改善热加工时间和温度,可以减轻钢中残余铜元素所导致的热脆性。
Enrichment rule of residual copper in different Cu-content steel surface during oxidation was studied.The research results indicate that the hot-working character of steel has intimately relationship with the copper content in steel.The more the content of residual copper in steel,the more severely the oxidation corrosion occurs on grain boundary and matrix,the greater the hot brittleness tendency;the longer the hot-working time,the deeper the liquid phase of copper-rich infiltrates into grain boundary,the wider distributes on matrix and the more the content enrichs on grain boundary;the higher the hot-working temperature,the severer the oxidation in the intercrystalline and grain boundary.Improving the time and temperature of hot-working process rationally,the hot brittleness caused by residual copper is lightened.
出处
《热加工工艺》
CSCD
北大核心
2010年第4期8-11,14,共5页
Hot Working Technology
基金
贵州大学人才科研基金资助项目(X055030)
关键词
残余铜元素
表面氧化
富铜相
热脆性
residual element copper
surface oxidation
copper-rich phase
hot brittleness
