高n、r值超低碳无间隙原子钢的研究  

ULTRA-LOW CARBON INTERSTITIAL-FREE STEEL WITH HIGH n,r-VALUES

作　　者：何崇智[1] 张倩[2] 张志军[2] 

机构地区：[1]钢铁研究总院金属物理研究室 [2]钢铁研究总院

出　　处：《钢铁》1997年第11期51-54,共4页Iron and Steel

基　　金：国家自然科学基金;冶金部;院基础研究经费资助项目

摘　　要：按超低碳、复合钛和铌微合金化原则设计了钢的成分,使基体中无碳、氮间隙原子存在;添加磷、硅以提高强度。研究结果表明,净化基体、优选工艺参数、控制有利γ-〈111〉//N.D 织构形成,可获得 n 值达0.32～0.33,r 值达2.56～2.68的优异基本成型性。采用 ODF 织构分析技术和化学电解相分析研究了主要工艺过程织构转变和第二相析出规律。对成分、工艺、微观结构和基本成型性的关系进行了讨论。The steel composition has been designed according to the micro alloying principle of interstitial-free steel,i,e.with ultra-low carbon and nitrogen,a little titanium and niobium,the strength of steel has been increased by adding phosphorus and silicon,The study shows that purified matrix,optimized processing parameters and favorable formation of γ- <111>//N.D texture can lead to excellent basic formability with a n-value of 0.32～0.33 and r-value of 2.56～2.68.ODF analysis and chemical electrolytic phase analysis has been adopteel to study the texture transformation in the major production steps and the law of second phase precipitation.In the paper,the relationship between the composition, processing,micro structure,and basic formability is discussed.

关 键 词：超低碳钢 织构 基本成型性 IF钢 汽车 

分 类 号：U465.11[一般工业技术—材料科学与工程] TG142.15[机械工程—车辆工程]