摘要
通过热模拟实验考察了在连续冷却条件下,不同的冷却速度对钒微合金化钢的形变诱导铁素体相变(DIFT)组织演变的影响规律.结果表明,大变形后的冷却速度越大,实验用钢的铁素体晶粒越细小;在相同的冷却速度下,钢中的钒含量越多,铁素体晶粒越细小.在较低的冷却速度下,钢中的钒含量越多,钒的碳氮化物析出越多;当冷却速度较大时,钒微合金化实验用钢中没有钒的碳氮化物析出.
The effect of cooling rate on DIFT （deformation induced ferrite transformation） microstructure evolution during continuously cooling was investigated for the vanadium microalloyed steel via thermo-simulator. The simulation results showed that the higher the cooling rate after large deformation, the finer the DIF （deformation induced ferrite） grains in specimens and, at the same cooling rate, the higher the vanadium content in the steel, the finer the DIF grains. However, at lower cooling rate, the higher the vanadium content, the more the carbonitride precipitates from vanadium, and no earbonitride precipitates are found in specimens at higher cooling rate.
出处
《东北大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2009年第12期1739-1742,共4页
Journal of Northeastern University(Natural Science)
基金
中国金属学会-国际钒技术委员会资助项目
中国博士后科学基金资助项目
东北大学博士后科研基金资助项目
关键词
钒微合金化
形变诱导铁素体相变
连续冷却
晶粒长大
碳氮化物
vanadium microalloying
DIFT（deformation induced ferrite transformation）
continuously cooling
grain growth
carbonitride
