Development of intergranular thermal residual stresses in beryllium during cooling from processing temperatures

被引：27

作者：

Brown, D. W. ^{[1
]}

Sisneros, T. A. ^{[1
]}

Clausen, B. ^{[1
]}

Abeln, S. ^{[1
]}

Bourke, M. A. M. ^{[1
]}

Smith, B. G. ^{[1
]}

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

Tome, C. N. ^{[1
]}

Vogel, S. C. ^{[1
]}

机构：

[1] Los Alamos Natl Lab, Los Alamos, NM 87545 USA

来源：

ACTA MATERIALIA | 2009年 / 57卷 / 04期

关键词：

Neutron diffraction; Residual stresses; Beryllium; Powder processing; DEFORMATION; ZIRCALOY-2;

D O I：

10.1016/j.actamat.2008.09.044

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The intergranular thermal residual stresses in texture-free solid polycrystalline beryllium were determined by comparison of crystallographic lattice parameters in solid and powder samples measured by neutron diffraction during cooling from 800 degrees C. The internal stresses are not significantly different front zero >575 degrees C and increase nearly linearly <525 degrees C. At room temperature, the c axis of an average grain is under similar to 200 MPa of compressive internal stress, and the a axis is under 100 MPa of tensile stress. For comparison, the stresses have also been calculated using an Eshelby-type polycrystalline model. The measurements and calculations agree very well when temperature dependence of elastic constants is accounted for, and no plastic relaxation is allowed in the model. (C) 2008 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：972 / 979

页数：8

共 12 条

[1] 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

[2] A neutron diffraction and modeling study of uniaxial deformation in polycrystalline beryllium [J].

Brown, DW ;

Bourke, MAM ;

Clausen, B ;

Holden, TM ;

Tomé, CN ;

Varma, R .

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 2003, 34A (07) :1439-1449

[3] Use of Rietveld refinement to fit a hexagonal crystal structure in the presence of elastic and plastic anisotropy [J].

Daymond, MR ;

Bourke, MAM ;

Von Dreele, RB .

JOURNAL OF APPLIED PHYSICS, 1999, 85 (02) :739-747

[4] RESIDUAL-STRESSES IN ANNEALED ZIRCALOY [J].

MACEWEN, SR ;

TOME, C ;

FABER, J .

ACTA METALLURGICA, 1989, 37 (03) :979-989

[5] Intergranular stresses in Zircaloy-2 with rod texture [J].

Pang, JWL ;

Holden, TM ;

Turner, PA ;

Mason, TE .

ACTA MATERIALIA, 1999, 47 (02) :373-383

[6] MECHANISMS FOR IN-REACTOR CREEP OF ZIRCONIUM ALLOYS [J].

PIERCY, GR .

JOURNAL OF NUCLEAR MATERIALS, 1968, 26 (01) :18-+

[7]

Simmons G., 1971, Single Crystal Elastic Constants and Calculated Aggregate Properties: A Handbook

[8] SOME METALLOGRAPHIC OBSERVATIONS OF PLASTIC DEFORMATION IN THERMALLY CYCLED URANIUM [J].

SOMASUNDARAM, R ;

PREMANAND, V .

JOURNAL OF NUCLEAR MATERIALS, 1966, 19 (03) :283-+

[9] Role of internal stresses in the transient of irradiation growth of Zircaloy-2 [J].

Tome, CN ;

Christodoulou, N ;

Turner, PA ;

Miller, MA ;

Woo, CH ;

Root, J ;

Holden, TM .

JOURNAL OF NUCLEAR MATERIALS, 1996, 227 (03) :237-250

[10]

Touloukian Y. S., 1975, THERMAL EXPANSION ME

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