Precipitates and hydrogen permeation behavior in Vanadium-bearing microalloyed low carbon steel

摘要：

The precipitates and hydrogen permeation behavior were studied in the low carbon steel for enameling.During the preparation of samples, Ti containing and Ti free in vanadium-bearing microalloyed low carbon steel heating at 750℃ for 3 h, were adopted after cold-rolling. It was found that the a large number of fine VC, TiC, TiN and Ti4C2S2 precipitates were in samples of Vanadium-bearing microalloyed low carbon steel with Ti element. And fine VC, Fe3C and MnS precipitates were in steels without Ti element. So the numbers of precipitates in the former is more bigger than the later. The activation energies for hydrogen diffusion in both samples are 26.5 and 23.7 kJ/mol, respectively. But at 25℃, the effective diffusion coefficients in the samples for Ti containing and Ti free in Vanadium-bearing microalloyed low carbon steel were measured as 2.71×10-6 and 4.22×10-6cm2/s, respectively. No fishscaling defect occurred in the former and heavy fishscaling defect in the later.

关键词： precipitate hydrogen permeability Enameling Vanadium-bearing microalloyed low carbon steel

作者: XU Chun LI Xiaojie SHEN Daguang

作者单位: Material Engineering Department, Shanghai Institute of Technology, Shanghai 200233 P. R. of China

会议类型: 国际会议

会议名称: 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)

会议地点: 北京

会议语种:英文

页码: 923-929

在线出版日期: 2011-05-31（万方平台首次上网日期，不代表论文的发表时间）