高师理科学刊2024，Vol.44Issue(9)：44-48,5.DOI:10.3969/j.issn.1007-9831.2024.09.008
稀土元素对2205双相不锈钢500℃离子渗氮动力学的影响
Effect of rare earth elements on plasma nitriding kinetics of 2205 duplex stainless steel at 500℃
摘要
Abstract
A comparative study was conducted to examine the plasma nitriding kinetics of 2205 duplex stainless steel in NH3 with and without rare earths at 500℃(8,16,24 h).The effective hardening layer(78.3 μm),compound layer(58.3 μm),and diffusion layer(20.0 μm)thickening rates at 8 hours of nitriding with rare earths(La)were all the highest,33.8%,17.8%,and 122.2%,respectively.The maximum surface hardness of the specimen after 24 hours of nitriding is 1 866.7 HV0.025,and the maximum hardness of the nitrided layer is 1 782 HV0.025,which is 4.9 times of the core hardness(365 HV0.025).The γ'-Fe4N diffraction peak becomes higher and stronger after plasma nitriding with rare earth,and the addition of rare earths reduces the precipitation of ε-Fe2-3N phase.The diffusion coefficient K increased by 22.8%to 1.51×10-13 m2·s-1 with the addition of rare earths compared to plasma nitriding without rare earth.关键词
2205双相不锈钢/稀土等离子体渗氮/显微组织/动力学Key words
2205 duplex stainless steel/plasma nitriding with rare earth/microstructure/kinetics分类
矿业与冶金引用本文复制引用
盛文萍,由园,王逸凡,王妍,许诗淼,顾峰,王超会,程伟东..稀土元素对2205双相不锈钢500℃离子渗氮动力学的影响[J].高师理科学刊,2024,44(9):44-48,5.基金项目
国家自然科学基金项目(51401113) （51401113）
黑龙江省自然科学基金项目(E2016069) （E2016069）
黑龙江省高校基本科研业务费项目(145209302) （145209302）
