摘要
回顾了近十年来低合金钢相变细化铁素体晶粒的进展。在无应变和有应变的条件下，给出了在相变过程中铁素体形核位置和密度的模型。探讨了晶内铁素体的形核机制；Ｖ－Ｎ钢中ＶＮ是优先生核的位置，更主要的是ＶＮ能抑制晶界铁素体的长大。追踪国际上获得超细晶组织的机理和方法，探讨了晶粒尺寸对屈服强度（σｓ）和冲击韧性转折温度（Ｔｃ）的作用，利用应变诱导动态相变机制获得超细晶组织。
The development of ferrite grain refining through phase transformation in low alloyed steels in decade is reviewed in this paper The model of nucleus site and density in phase transformation with and without strain is established The intragranular nucleation is also studied In VN steel, VN is the prior nucleated site for , and VN nucleated at the grain boundary can inhibit the growth of The mechanism and method by which the ultrafine structure can be obtained are investigated The influence of grain size on yield strength ( s) and impacted temperature (T c) is discussed The ultrafine structure can be obtained by means of strain induced dynamic phase transformation
出处
《钢铁》
CAS
CSCD
北大核心
1999年第5期71-74,共4页
Iron and Steel
关键词
低合金钢
相变
铁素体晶粒
晶粒细化
low alloyed steel, phase transformation, grain refinement
