Finite element analysis on fracture of WC-Co hard alloys

被引：0

作者：

Moriya, Yukinobu

Aoki, Shigeru

Kishimoto, Kikuo

Schmauder, Siegfried

机构：

来源：

Nippon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A | 1993年 / 59卷 / 560期

关键词：

Ductile fracture - Gurson's constitutive equations - Hoop stress - Hydrostatic stress - WC-Co hard alloys;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

An elastic-plastic finite element analysis of the crack-tip field in a WC-Co alloy was performed to achieve a detailed understanding of ductile fracture in a Co phase. A model in which a Co phase was embedded at the crack tip in an elastic solid was employed, and Gurson's constitutive equations for porous plastic material were used for the Co phase in order to take into account the nucleation and growth of the microvoids. The effects of the shape of the Co phase and the stress state (plane stress or plane strain) on the distributions of hoop stress, hydrostatic stress and microvoid volume fraction were discussed using the computational results. The process of ductile fracture under constraints of deformation was also discussed.

引用

页码：129 / 134