摘要
目前普遍用来评价轴承钢洁净度和均质化程度的方法难以满足对超长疲劳寿命轴承钢的质量评估。提出了一种更科学直观地评判轴承钢的质量水平的方法。利用扫描电子显微镜进行多维度和全定量的微观夹杂物的检测,较为详细准确地分析微观夹杂物的类型和尺寸。通过原位分析技术进行均质化的定量分析,能准确分析各元素的偏析和材料的致密度,这些先进方法的应用为超长疲劳寿命轴承钢的质量评价提供了技术基础。兴澄公司生产的轴承钢,旋转弯曲疲劳性能大于1000 MPa,滚动接触疲劳性能全面大于2×10^7次。
It is difficult to evaluate the quality of bearing steels with long fatigue life through conventional technology analyzing the purity and the homogenization of bearing steels.And a more scientific and intuitive method was proposed to evaluate the quality of bearing steels.The multidimensional and quantitative distribution of inclusions can be characterized by a scanning electron microscope.The type and size of inclusions can be analyzed in detail and accurately.In addition,the segregation of each element and density distribution of materials can be accurately analyzed through the quantitative analysis of homogenization by in-situ analysis.The application of those technologies can provide a technological basis for the quality evaluation of bearing steels with ultra-long fatigue life.The rotational bending fatigue property of bearing steels produced by Xingcheng Special Steel was larger than 1000 MPa.And the rolling contact fatigue property was more than 2×10^7times.
作者
刘烨
尹青
李锋
许晓红
陈敏
翟蛟龙
LIU Ye;YIN Qing;LI Feng;XU Xiao-hong;CHEN Min;ZHAI Jiao-long(Bar Institute,Jiangyin Xing Cheng Special Steel Co.,Ltd.,Jiangyin 214400,Jiangsu,China;Jiangyin Xing Cheng Special Steel Co.,Ltd.,Jiangyin 214400,Jiangsu,China)
出处
《中国冶金》
CAS
北大核心
2020年第9期37-40,共4页
China Metallurgy
关键词
轴承钢
扫描电子显微镜
原位分析
旋转弯曲疲劳
滚动接触疲劳
bearing steel
scanning electron microscope
in-situ analysis
rotational bending fatigue
rolling contact fatigue
