温度对不锈钢包覆铁屑轧制复合界面的性能影响  

Effects of temperature on the performance of rolling stainless steel/scrap iron composite interface

作　　者：肖宏[1] 解芃芃 谢红飙[1] 张少坤[1] 任忠凯 

机构地区：[1]燕山大学国家冷轧板带装备及工艺工程技术研究中心,河北秦皇岛066004

出　　处：《中国科技论文》2015年第22期2611-2613,共3页China Sciencepaper

基　　金：高等学校博士学科点专项科研基金资助项目(20121333110003);河北省自然科学基金资助项目(E2013203277)

摘　　要：通过金相观察和剪切实验,研究温度对不锈钢包覆铁屑轧制的复合界面间剪切强度、晶粒分布和轧后尺寸的影响。结果表明:随着温度的升高,两金属复合界面的间隙得到有效改善,试件宽展增加,不锈钢层厚度随之减小。在1 150℃轧制后,铁屑内部晶粒分布较其他温度下轧制后更为细小、均匀,两金属间已出现扩散层,界面间的剪切强度达到303.3 MPa,已超过国家标准对不锈钢复合板剪切强度的规定。证明在1 150℃温度下轧制,更有利于不锈钢与铁屑的冶金结合。Effects of temperature on the shear strength and grain size and distribution of the rolling stainless steel/scrap iron composite interface are investigated by metallographic observation and shearing experiment.Results show that with the increase of the temperature,the gap at the composite interface of the two metals is improved effectively;the workpiece spread increases,and the thickness of the stainless steel decreases.After rolling at 1 150 ℃,the grain distribution within the scrap iron is finer and more uniform than that at other temperatures.Diffusion layer occurs between two metals with its shear strength at 303.3 MPa which exceeds the national standard.It proves that the rolling at 1 150 ℃ can contribute to a better metallurgical bonding between the stainless steel and the scrap iron.

关 键 词：钢铁冶金 铁屑 轧制温度 复合轧制 

分 类 号：TG335[金属学及工艺—金属压力加工]