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用真空热抽取分析和电化学渗透法进行研究具有不同显微结构的阴极充氢的纯铁,T8钢,4J46,Fe-Cr和Fe-Cr-Al合金中氢陷阱问题、测量了不同陷阱中逸出氢的激活能。如纯铁和T8钢不同陷阱的激活能如下:晶界和铁素体/渗碳体相界面为29.6kJ/mol;位错为36.9kJ/mol;微孔(纯铁)为41.6kJ/mol。合金中溶解Cr和Al原子后发现有一个强的陷阱效应。通过在恒定加热速率下(4.46或2.68K/min)用热分析法求得的逸氢速率曲线对改进炼钢工艺具有一定意义。
Vacuum trapping analysis and electrochemical permeation were used to study hydrogen trap in pure iron, T8 steel, 4J46, Fe-Cr and Fe-Cr-Al alloys with different microstructures. Escaping hydrogen activation energy. The activation energies of different traps such as pure iron and T8 steel are as follows: the grain boundary and the interface of ferrite / cementite are 29.6kJ / mol; the dislocation is 36.9kJ / mol; the micropore (pure iron) is 41.6kJ / mol . The alloy has a strong trap effect after dissolving Cr and Al atoms. The hydrogen evacuation rate curve obtained by thermal analysis at a constant heating rate (4.46 or 2.68 K / min) is of significance for improving the steelmaking process.