摘要
以硬线产品为研究对象,分析不同吐丝温度及冷却速率对硬线表面氧化铁皮结构的影响。研究结果表明:线材经过吐丝及冷却过程后得到的氧化铁皮组织主要以Fe_(3)O_(4),FeO和先共析Fe_(3)O_(4)为主,Cr质量分数不同导致界面位置会有Fe_(3)O_(4)接缝层或Cr富集层生成;吐丝温度能够直接影响Fe_(3)O_(4)的体积分数,冷却工艺则会影响到FeO中形成的先共析Fe_(3)O_(4)的体积与形核率。同时,若基体含有较高质量分数的Cr元素,则在氧化过程中界面位置处会形成Cr的富集层,可以起到与Fe_(3)O_(4)接缝层相同的阻碍离子扩散的作用,加速先共析反应的发生。
Hard wire products was used to analyze the effects of different laying temperatures and cooling rates on the structure of oxide scale on the surface of matrix.The results show that the oxide scale obtained by wire spinning and cooling mainly consists of Fe_(3)O_(4),FeO and proeutectoid Fe_(3)O_(4).Different Cr mass fractions lead to the formation of Fe_(3)O_(4)seam layer or Cr enrichment layer at the interface.The laying temperature can directly affect the volume fraction of Fe_(3)O_(4),while the cooling process directly affects the volume and nucleation rate of proeutectoid Fe_(3)O_(4)formed in FeO.At the same time,if the matrix contains high mass fraction of Cr element,a Cr enrichment layer will be formed at the interface in the oxidation process,which can play the same role as Fe_(3)O_(4)seam layer in hindering ion diffusion and accelerating the occurrence of proeutectoid reaction.
作者
王皓
黄标彩
曹光明
魏勇
严海峰
刘振宇
WANG Hao;HUANG Biaocai;CAO Guangming;WEI Yong;YAN Haifeng;LIU Zhenyu(State Key Laboratory of Rolling and Automation,Northeastern University,Shenyang 110819,China;Fujian Sangang Minguang Co.Ltd.,Sanming 365000,China)
出处
《中南大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2023年第1期53-60,共8页
Journal of Central South University:Science and Technology
基金
国家重点研发计划项目(2022YFB3304800)
中国博士后科学基金资助项目(2021M701167,2022T150205)。
