Yielding in notch tensile specimens with graded microstructures

被引：6

作者：

Bohner, F

Gregory, JK ^{[1
]}

Weber, U

Schmauder, S

机构：

[1] Tech Univ Munich, Chair Mat Mech Engn, D-85747 Garching, Germany

[2] Univ Stuttgart, Staatliche Mat Prufungsanstalt MPA, D-70569 Stuttgart, Germany

来源：

MECHANICS OF MATERIALS | 1999年 / 31卷 / 10期

关键词：

notches; yielding; tensile properties; finite element analysis; age-hardening; titanium;

D O I：

10.1016/S0167-6636(99)00026-5

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Graded microstructures were generated in notched tensile specimens of an age-hardenable titanium alloy in order to tailor the local resistance to plastic deformation to the expected local degree of mechanical loading. Experiments verified that the local strength increase in the notch root causes the proportional limit (as measured macroscopically in a tensile test) to increase. This result can be explained using a local stress approach. Based on the flow curves for unnotched specimens of a reference (non-graded) material and an empirical correlation between yield stress and microhardness, the flow curves of the graded notched specimens could be successfully predicted using finite element analysis. (C) 1999 Elsevier Science Ltd. All rights reserved.

引用

页码：627 / 636

页数：10

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