Effect of residual stresses on individual phase mechanical properties of austeno-ferritic duplex stainless steel

被引：77

作者：

Dakhlaoui, R.

Baczmanski, A.

Braham, C.

Wronski, S.

Wierzbanowski, K.

Oliver, E. C.

机构：

[1] AGH Univ Sci & Technol, Fac Phys & Appl Comp Sci, PL-30059 Krakow, Poland

[2] CNRS, LIM, UMR 8006, Ecole Natl Super Arts & Metiers, F-75013 Paris, France

[3] Rutherford Appleton Lab, ISIS, CCLRC, Didcot OX11 0QX, Oxon, England

来源：

ACTA MATERIALIA | 2006年 / 54卷 / 19期

关键词：

residual stresses; X-ray and neutron diffraction; duplex stainless steel; self-consistent model;

D O I：

10.1016/j.actamat.2006.06.035

中图分类号：

T [工业技术];

学科分类号：

08 [工学];

摘要：

The mechanical properties of both phases in duplex stainless steel have been studied in situ using neutron diffraction during mechanical loading. Important differences in the evolution of lattice strains are observed between tests carried out in tension and compression. An elastoplastic self-consistent model is used to predict the evolution of internal stresses during loading and to identify critical resolved shear stresses and strain hardening parameters of the material. The differences between tensile and compressive behaviours of the phases are explained when the initial stresses are taken into account in model calculations. The yield stresses in each phase of the studied steel have been experimentally determined and successfully compared with the results of the elastoplastic self-consistent model. (c) 2006 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：5027 / 5039

页数：13

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