摘要
本文利用垂直截面法测量了０８Ｆ钢经不同形变渗氮复合处理后冲击断裂表面的分形维数。试验结果表明，材料的冲击能ＡＫ和断裂表面的分形维数ＤＦ均随形变量的增加而增大，且变化规律也十分相似．冲击断口Ｔ、Ｓ两方向上的分形维数ＤＴ和ＤＳ均与冲击能的对数ｌｎＡＫ之间呈正变化的线性关系。
The fractional dimension of impact fractured surfaces of 08Al steel after deform-nitriding were measured by vertical section method.The results show that the larger the degree of prior deformation,the higher the fractional dimension Df and the impact energy Ak.A positive linear corelation between Ln Ak and the fractional dimensions include DT which along the direction of crack propagation and DS which perpendicular to the direction of crack propagation propagation is obtained, and ,Ds>DT.The reason why the fractional DS>DT is discussed
出处
《材料科学与工艺》
CAS
CSCD
北大核心
1996年第2期115-119,共5页
Materials Science and Technology
关键词
分形维数
形变渗氮
冲击能
钢
渗氮
fractional dimension
deform-nitriding
impact energy
