Influence of V(C,N) precipitates on microstructure and mechanical properties of continuous cooled C-Mn-V
The effect of chemical composition and processing parameters on the formation of acicular ferrite and/or bainite has been investigated. In particular,this paper deals with the influence that N through its combination with V,as V(C,N) precipitates,has on the decomposition of austenite. Likewise,the intragranular nucleation potency of V(C,N) precipitates is analyzed through the continuous cooling transformation diagrams (CCT) of two C-Mn-V steels with different contents of N. Results reported in this work allow us to conclude that acicular ferrite can only be achieved alloying with vanadium and nitrogen, meanwhile bainite is promoted in steels with a low level of nitrogen.It is concluded that higher strength values are obtained in acicular ferrite than in bainitic steel but a similar brittle-ductile transition temperature (BDT),and lower values of impact absorbed energy (KV) has been recorded in nitrogen-rich steel.
acicular ferrite bainite vanadium precipitates mechanical properties
CARLOS Garcia-Mateo CARLOS Capdevila JUAN Cornide JESUS Chao FRANCISCA G.Caballero CARLOS Garcia de Andres
MATERALIA Research Group. Department of Physical Metallurgy,Centro Nacional de Investigaciones Metalúrgicas (CENIM-CSIC),Avda. Gregorio del Amo,8.E-28040 Madrid,Spain
国际会议
The 6th International Conference on High Strength Low Alloy Steels(第六届高强度低合金钢国际会议HSLA Steels2011)
北京
英文
267-270
2011-05-31（万方平台首次上网日期，不代表论文的发表时间）