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

被引：7

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 34 条

[1] Deformation-induced phase development in a cobalt-based superalloy during monotonic and cyclic deformation [J].

Benson, M. L. ;

Liaw, P. K. ;

Saleh, T. A. ;

Choo, H. ;

Brown, D. W. ;

Daymond, M. R. ;

Huang, E. -W. ;

Wang, X. -L. ;

Stoica, A. D. ;

Buchanan, R. A. ;

Klarstrom, D. L. .

PHYSICA B-CONDENSED MATTER, 2006, 385 :523-525

[2]

Benson ML, 2006, T NONFERR METAL SOC, V16, pS144

[3] Intergranular strain and phase transformation in a cobalt-based superalloy [J].

Benson, M. L. ;

Stoica, A. D. ;

Liaw, P. K. ;

Choo, H. ;

Saleh, T. A. ;

Wang, X. -L ;

Brown, D. W. ;

Klarstrom, D. L. .

RESIDUAL STRESSES VII, 2006, 524-525 :893-898

[4] Fatigue-induced phase formation and its deformation behavior in a cobalt-based superalloy [J].

Benson, ML ;

Saleh, TA ;

Liaw, PK ;

Choo, H ;

Brown, DW ;

Daymond, MR ;

Wang, XL ;

Stoica, AD ;

Buchanan, RA ;

Klarstrom, DL .

POWDER DIFFRACTION, 2005, 20 (02) :121-124

[5] SMARTS - a spectrometer for strain measurement in engineering materials [J].

Bourke, MAM ;

Dunand, DC ;

Ustundag, E .

APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING, 2002, 74 (Suppl 1) :S1707-S1709

[6]

Buschow K.H.J., 2001, ENCY MAT SCI TECHNOL, P1279

[7] SLIP CHARACTER AND LOW-CYCLE FATIGUE BEHAVIOR - INFLUENCE OF FCC TWINNING AND STRAIN-INDUCED FCC-]HCP MARTENSITIC-TRANSFORMATION [J].

CHALANT, G ;

REMY, L .

ACTA METALLURGICA, 1980, 28 (01) :75-88

[8] Use of Rietveld refinement for elastic macrostrain determination and for evaluation of plastic strain history from diffraction spectra [J].

Daymond, MR ;

Bourke, MAM ;

VonDreele, RB ;

Clausen, B ;

Lorentzen, T .

JOURNAL OF APPLIED PHYSICS, 1997, 82 (04) :1554-1562

[9] DISORDER IN COBALT SINGLE-CRYSTALS [J].

FREY, F ;

BOYSEN, H .

ACTA CRYSTALLOGRAPHICA SECTION A, 1981, 37 (NOV) :819-826

[10] STACKING-FAULTS AND FCC (GAMMA)-]HCP (EPSILON) TRANSFORMATION IN 18-8-TYPE STAINLESS-STEEL [J].

FUJITA, H ;

UEDA, S .

ACTA METALLURGICA, 1972, 20 (05) :759-+

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