%0 Journal Article
%T Mathematical Modelling of Carbonitride Precipitation during Hot Working in Nb Microalloyed Steels
%A Yunbo XU
%A Yongmei YU
%A Xianghua LIU
%A Guodong WANG
%A <br>Yunbo
%A XU
%A Yongmei
%A YU
%A Xianghua
%A LIU
%A Guodong
%A WANG
%J 材料科学技术学报
%D 2006
%I 
%X Based on thermodynamics and kinetics, precipitation behavior of microalloyed steels was analyzed. Deformation greatly promotes isothermal carbonitride precipitation and makes C-curve shift leftwards. The position and shape of C-curve also depend on the content of Nb and N. C-curve shifts leftwards a little when N content increases and the nose temperature is raised with increasing Nb content. Deformation shortened precipitation start time during continuous cooling, raised precipitation start temperature, accelerated precipitation kinetics of carbonitrides. With decreasing the finishing temperature and coiling temperature, the precipitates volume fraction increases and strength increment is raised during hot rolling. The simulated results are in agreementwith experiment results.
%K Nb microalloyed steels
%K Precipitation kinetics
%K Precipitation-temperature-time curve
%K Continuous cooling precipitation
%K Mathematical modeling<br>铌微合金化钢
%K 沉淀动力学
%K 沉淀温时曲线
%K 连续冷却
%K 数学模型
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=84529CA2B2E519AC&jid=324DC3CAB22330DB19158AE0A9B7BFA5&aid=423A0A05BA6C20BED71FD8A873F108E0&yid=37904DC365DD7266&vid=BC12EA701C895178&iid=0B39A22176CE99FB&sid=EB552E4CFC85690B&eid=04445C1D2BDA24EE&journal_id=1005-0302&journal_name=材料科学技术学报&referenced_num=0&reference_num=18