钢铁
鋼鐵
강철
IRON & STEEL
2001年
2期
44-47
,共4页
孙邦明%季怀忠%杨才福%张永权
孫邦明%季懷忠%楊纔福%張永權
손방명%계부충%양재복%장영권
沉淀%V-N微合金化%钢筋
沉澱%V-N微閤金化%鋼觔
침정%V-N미합금화%강근
研究了氮对含钒微合金化钢筋中钒的析出行为的影响。实验结果表明:低氮钒钢中,大部分钒固溶于铁素体基体,比例高达56 %,只有35.5 %钒形成V(C,N);高氮钒钢中,70 %的钒析出形成V(C,N),只有20 %的钒固溶于基体。钢中增氮还减小了V(C,N)颗粒尺寸,明显增加细小V(C,N)析出相的体积分数。
研究瞭氮對含釩微閤金化鋼觔中釩的析齣行為的影響。實驗結果錶明:低氮釩鋼中,大部分釩固溶于鐵素體基體,比例高達56 %,隻有35.5 %釩形成V(C,N);高氮釩鋼中,70 %的釩析齣形成V(C,N),隻有20 %的釩固溶于基體。鋼中增氮還減小瞭V(C,N)顆粒呎吋,明顯增加細小V(C,N)析齣相的體積分數。
연구료담대함범미합금화강근중범적석출행위적영향。실험결과표명:저담범강중,대부분범고용우철소체기체,비례고체56 %,지유35.5 %범형성V(C,N);고담범강중,70 %적범석출형성V(C,N),지유20 %적범고용우기체。강중증담환감소료V(C,N)과립척촌,명현증가세소V(C,N)석출상적체적분수。
The effect of nitrogen on precipitating behavior of vanadium in V-N microalloyed steels is investigated in this paper. Nitrogen changes the distribution of vanadium in precipitated phase and ferrite matrix and promotes precipitation of fine V(C,N) particles. For low nitrogen V-steel, only 35.5 % of the total vanadium precipitates in the form of V(C,N) while 56 % of vanadium is soluted in ferrite matrix. However, in V-N steels most of vanadium precipitates in the form of V(C,N) and the proportion is up to 70 %. Only 20 % of vanadium is soluted in the matrix. Enhanced nitrogen content, which contributes to exploitation of more potential of precipitation strengthening of vanadium, results in remarkable improvement of the strength of vanadium-nitrogen steels.