Fractal-dimension limit of fracture surface in structural steels

被引：0
|
作者：
Strnadel, B
Byczanski, P
机构：
[1] Tech Univ Ostrava, Katedra Mat Oveho Inzenyrstvi, Fak Met & Mat Oveho Inzenyrstvi, Ostrava 70833, Czech Republic
[2] Acad Sci Czech Republic, Ustav Geoniky, Ostrava 70800, Czech Republic
来源：
KOVOVE MATERIALY-METALLIC MATERIALS | 2001年 / 39卷 / 02期
关键词：
martensitic steel; carbides; voids; ductile fracture; fractography; fractal dimension; fracture toughness;
D O I：
暂无
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
This paper presents a method for predicting the fractal dimensions of ductile fracture surfaces in structural steels. The fractal dimension of the fracture surface is a non-monotonic function of the ratio of interparticle spacing and particle size, and it increases with the increasing: work hardening exponent and the ordering parameter of second-phase particles in the matrix. The ratio of interparticle spacing and particle size, at which the fractal dimension has a maximum, diminishes with increasing work hardening exponent. The model has been proved for Ni-Cr steel with the structure of tempered martensite. In the region of stable crack propagation, a very good accordance of the experimentally ascertained fractal dimension of the fracture profile with the predicted fractal dimension of fracture surface was found.
引用
收藏
页码：93 / 109
页数：17
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