轧制工艺对MR T-2.5镀锡基板C原子固溶的影响  

Effect of Different Rolling Technological Process on the Solution of Carbon in MR T-2.5 Tinplate

作　　者：王玉[1] 刘炜丽[1] 曹晓晖[2] 王守晶[3] 

机构地区：[1]沈阳理工大学材料科学与工程学院,辽宁沈阳110159 [2]沈阳理工大学环境与化学工程学院,辽宁沈阳110159 [3]辽宁石油化工大学,辽宁抚顺113001

出　　处：《沈阳理工大学学报》2010年第4期55-58,共4页Journal of Shenyang Ligong University

摘　　要：利用低频扭摆测量内耗以及金相显微镜观察金相组织,研究MR T-2.5镀锡基板在轧制过程中,因轧制工艺的先后及工艺本身的性质引起的C原子在MR T-2.5中的存在状态及变化情况。研究发现:在四个相互延续工艺状态下,热轧后钢板中的C原子全部固溶于铁素体晶格间隙;冷轧后C原子主要集中在位错周围形成Cottrel气团钉扎位错;退火过程位错周围C原子发生脱溶沉淀,形成Fe3C析出于晶界处;平整加剧C原子的脱溶沉淀.Experiments,including low frequency internal friction measurement and metallographic examination,were carried out to study the state of free carbon atoms existing in MR T-2.5 tinplate,which are caused by different rolling processes.The results showed that the carbon atoms were dissolved in the interval of ferrite lattice in the continuous hot rolling state.The increasing dislocation density in the process of cold rolling attracted the carbon atoms to form Cottrell atmosphere at lattice dislocation.The carbon atoms were dissolved to form Fe3C in the process of annealing.The precipitation of carbon was intensified when leveled.

关 键 词：Snoek峰 内耗 C原子 固溶 

分 类 号：TG113.226[金属学及工艺—物理冶金]