北京科技大学学报Issue(10)：1325-1330,6.DOI:10.13374/j.issn2095-9389.2015.10.011
正火过程中V--N微合金化钢的第二相行为
Precipitation behavior of V--N microalloyed steel at the normalizing process
苏航 1柴希阳 1潘涛 1杨才福 1刘翊之1
作者信息
- 1. 钢铁研究总院工程用钢研究所，北京100081
- 折叠
摘要
Abstract
The precipitation behavior of V-N microalloyed steel at the normalizing process was studied by physicochemical phase analysis and high resolution transmission electron microscopy. The effect of this precipitation behavior on the mechanical properties of the steel was discussed by theoretical calculations. At soaking of the normalizing process, 32. 9% of V(C,N) precipitations keep undissolved into austenite, and they prevent austenite from growing up. At the subsequent cooling process, the undissolved V( C,N) precipitations induce intra-granular ferrite nucleating, which can refine ferrite grains; besides, the dissolved V( C,N) precipitations re-precipitate and play the role of precipitation strengthening. Compared with the hot-rolled steel, the normalized steel gains a 31 MPa increment in grain-refined strengthening but a 45 MPa decrease in precipitation strengthening.关键词
钢热处理/正火处理/微合金化/析出/晶粒细化/强化Key words
steel heat treatment/normalizing/microalloying/precipitation/grain refinement/strengthening分类
矿业与冶金引用本文复制引用
苏航,柴希阳,潘涛,杨才福,刘翊之..正火过程中V--N微合金化钢的第二相行为[J].北京科技大学学报,2015,(10):1325-1330,6.
