On low-cycle fatigue of austenitic steel. Part I: Changes of Poisson's ratio and elastic anisotropy

被引：13

作者：

Mishakin, V. V. ^{[1
]}

Gonchar, A. V. ^{[1
]}

Kurashkin, K. V. ^{[1
]}

Klyushnikov, V. A. ^{[1
]}

Kachanov, M. ^{[2
]}

机构：

[1] RAS, Inst Appl Phys, Fed Res Ctr, Mech Engn Res Inst,RAS Branch, 85 Belinskogo Str, Nizhnii Novgorod 603024, Russia

[2] Tufts Univ, Dept Mech Engn, Medford, MA 02155 USA

来源：

INTERNATIONAL JOURNAL OF ENGINEERING SCIENCE | 2021年 / 168卷 / 168期

基金：

俄罗斯科学基金会;

关键词：

Fatigue; Austenitic steel; Monitoring; Martensite; Anisotropy; Poisson's ratio; STAINLESS-STEEL; MARTENSITIC-TRANSFORMATION; ACOUSTIC-EMISSION; DEFORMATION; TEMPERATURE; 304L;

D O I：

10.1016/j.ijengsci.2021.103567

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Microstructural changes under low-cycle fatigue of a metastable austenitic steel are monitored by a combination of the acoustic parameters: Poisson's ratio (more precisely, its change) as indicator of the "diffused" damage and anisotropy change as indicator of changes of texture. Three stages of the Poisson's ratio evolution are identified; they serve as markers of the process of material degradation. A criterion of fracture in terms of a critical combination of the changes of the mentioned parameters is proposed and tested. The challenge of separating the effects of damage accumulation and of the martensitic transformation on elasticity parameters is addressed by combining acoustic monitoring with the eddy current data.

引用

页数：9

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