On the origin of deformation microstructures in austenitic stainless steel: Part I - Microstructures

被引：104

作者：

Lee, EH ^{[1
]}

Byun, TS ^{[1
]}

Hunn, JD ^{[1
]}

Yoo, MH ^{[1
]}

Farrell, K ^{[1
]}

Mansur, LK ^{[1
]}

机构：

[1] Oak Ridge Natl Lab, Div Met & Ceram, Oak Ridge, TN 37831 USA

来源：

ACTA MATERIALIA | 2001年 / 49卷 / 16期

关键词：

steels (austenite); deformation; microstructure;

D O I：

10.1016/S1359-6454(01)00193-8

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A comprehensive characterization of room temperature deformation microstructures was carried out by transmission electron microscopy for ion irradiated and deformed AISI 316LN austenitic stainless steel. Deformation microstructures were produced by a recently developed disk-bend test method and also by a uniaxial tensile test. Cross-slip was dramatically suppressed by the radiation-induced defects and slip occurred predominantly by planar glide of Shockley partial dislocations. Deformed microstructures consisted of piled-up dislocations, nanotwin layers, stacking faults, and defect-reduced dislocation channel bands. Analyses revealed that all these features were different manifestations of the same type of deformation band, namely a composite of overlapping faulted layers produced by Shockley partial dislocations. (C) 2001 Acta Materialia Inc. Published by Elsevier Science Ltd. All rights reserved.

引用

页码：3269 / 3276

页数：8

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