稀土节镍不锈钢洁净化关键技术
Key technology of Clean Production of Rare Earth-containing Low-nickel Stainless Steels
在实验室条件下研究了铈对低镍不锈钢中夹杂物的影响规律。随铈含量增加,钢中T.O含量降低,钢中T.S含量降低,钢中氧化物夹杂的演变路径为:Si-Mn-(Al)-O→Ce-Si-Mn-O→Ce-O-S.通过实验室实验研究了铈对低镍不锈钢凝固组织及加热过程奥氏体晶粒长大过程的影响。通过腐蚀失重实验、电化学实验等方法研究了铈对低镍不锈钢抗腐蚀性能的影响。通过高温拉伸试验、室温冲击和拉伸试验研究了铈对低镍不锈钢力学性能的影响。
Laboratory experiments were performed to study the influence of cerium on the inclusion in the low-nickle stainless steel.When the total cerium content in the steel increased,the total oxygen content in the steel decreased,and the total sulfur content in the steel decreased f.The transformation path of inclusions was:Si-Mn-(Al)-O→Ce-Si-Mn-O-S→Ce-O-S.Effects of cerium on the solidification structure and the growth of austenite grains during heating was studied through laboratory experiments.The effect of cerium on the corrosion resistance of the low-nickel stainless steel was studied through corrosion weight loss experiments,electrochemical experiments.The effect of cerium on mechanical properties of the low-nickel stainless steel was studied through tensile test at high temperature,impact test and tensile test at room temperature.
任英;张继;张立峰;
北京科技大学冶金与生态工程学院,北京 100083;北京科技大学冶金与生态工程学院,北京 100083;北方工业大学机械与材料工程学院,北京 10144;
Low-nickel stainless steels Rare earth Inclusions
300-303 / 4
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