有色金属材料与工程2025，Vol.46Issue(1)：98-105,8.DOI:10.13258/j.cnki.nmme.20240311003
过时效温度对1500双相钢氢脆敏感性的影响
Effect of over-ageing temperature on hydrogen embrittlement susceptibility of 1500 dual-phase steels
摘要
Abstract
The over-aging treatment of the C-Mn-Si system 1 500 dual-phase(DP)steel annealed at 850℃has been carried out at different temperatures.The effects of over-ageing temperature,hydrogen charging current density and hydrogen charging time on the hydrogen embrittlement susceptibility of 1500DP steel were investigated using electrochemical hydrogen charging and slow strain rate tensile experiments.The microstructures and hydrogen fracture morphologies of 1500DP steel were characterized by optical microscope and scanning electron microscope.The experimental results show that the tensile strength and yield strength of 1500DP steel decrease,and the elongation firstly decreases and then increases,when the over-aging temperature increases from 240℃to 300℃.The hydrogen embrittlement susceptibility decreases with the increase of over-aging temperature,the decrease is most significant when the over-ageing temperature is 300℃.With the increase of hydrogen charging current densities and the extension of hydrogen charging time,the mass fraction of hydrogen in 1500DP steel increases significantly,and the hydrogen embrittlement susceptibility is also enhanced.关键词
1500双相钢/过时效温度/氢陷阱/氢脆敏感性Key words
1500 dual-phase steel/over-ageing temperature/hydrogen trap/hydrogen embrittlement susceptibility分类
矿业与冶金引用本文复制引用
万亮,蒋烨倩,娄东阁,李伟,马凤仓,张柯..过时效温度对1500双相钢氢脆敏感性的影响[J].有色金属材料与工程,2025,46(1):98-105,8.基金项目
国家自然科学基金资助项目(51971148) （51971148）
