Phase-transformation and subgrain-deformation characteristics in a cobalt-based superalloy

被引：6

作者：

Benson, M. L. ^{[1
]}

Reetz, B. ^{[2
]}

Liaw, P. K. ^{[1
]}

Reimers, W. ^{[2
]}

Choo, H. ^{[1
,3
]}

Brown, D. W. ^{[4
]}

Saleh, T. A. ^{[4
]}

Klarstrom, D. L. ^{[5
]}

机构：

[1] Univ Tennessee, Dept Mat Sci & Engn, Knoxville, TN 37996 USA

[2] Tech Univ Berlin, Inst Mat Sci & Technol, D-10587 Berlin, Germany

[3] Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA

[4] Los Alamos Natl Lab, Div Mat Sci & Technol, Los Alamos, NM 87545 USA

[5] Haynes Int Inc, Kokomo, IN 46904 USA

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2011年 / 528卷 / 4-5期

基金：

美国国家科学基金会;

关键词：

Strain-induced phase transformation; In situ neutron diffraction; Line-profile analysis; Stacking faults; CYCLE FATIGUE BEHAVIOR; NEUTRON-DIFFRACTION; IN-SITU; TEMPERATURE EVOLUTION; STRAIN; FCC; DIFFRACTOMETER; ALLOY;

D O I：

10.1016/j.msea.2010.10.061

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

A complimentary set of experiments, in situ neutron diffraction and ex situ synchrotron X-ray diffraction, were used to study the phase-transformation and subgrain-deformation characteristics of a cobalt-based superalloy. The neutron diffraction indicated a strain-induced phase transformation in the cobalt-based superalloy under uniaxial tension and compression. The synchrotron X-ray diffraction revealed stacking-fault accumulation and twinning under the same loading conditions. The extent of transformation was found to be greater under tension than under compression. Tensile plastic strains below 2% were accommodated by the stacking-fault creation, while those greater than 2% were accommodated by the phase transformation. Twinning was found to be more active under compressive loading than under tensile loading. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：1987 / 1993

页数：7

共 48 条

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MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2011, 528 (18): : 6051 - 6058
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