Size distribution and coarsening kinetics of δ′ precipitates in Al-Li alloys considering temperature and concentration dependence

被引：30

作者：

Tsao, CS

Chen, CY

Kuo, TY

Lin, TL

Yu, MS

机构：

[1] Inst Nucl Energy Res, Div Nucl Fuel & Mat, Lungtan 325, Taiwan

[2] So Taiwan Univ Technol, Dept Engn Mech, Yung Kang, Taiwan

[3] Natl Tsing Hua Univ, Dept Engn & Syst Sci, Hsinchu, Taiwan

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2003年 / 363卷 / 1-2期

关键词：

particle size distribution; small-angle X-ray scattering; kinetics; Al-Li alloy; precipitates;

D O I：

10.1016/S0921-5093(03)00640-3

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

While the aging temperature is increased to low undercooling, 180degreesC for Al-9.7 at.% Li alloy, the transitions of both the coarsening mechanism and the size distribution of delta' precipitates in Al-Li alloy are found and studied using small-angle X-ray scattering (SAXS) technique. A modified precipitation mechanism considering this transition is explored with respect to both the determined precipitate size distribution and the growth rate constant. Additionally, a more adequate method is established for estimating the growth rate constant as a function of aging temperature and Li concentration, and those results are compared with corresponding measurement results. (C) 2003 Elsevier B.V. All rights reserved.

引用

页码：228 / 233

页数：6

共 28 条

[1] LATE STAGES OF DELTA' PRECIPITATION IN AN AL-LI ALLOY BY SMALL-ANGLE NEUTRON-SCATTERING [J].

ABIS, S ;

CACIUFFO, R ;

CARSUGHI, F ;

COPPOLA, R ;

MAGNANI, M ;

RUSTICHELLI, F ;

STEFANON, M .

PHYSICAL REVIEW B, 1990, 42 (04) :2275-2281

[2] Comparison of small-angle neutron scattering of δ′ precipitation in an Al-Li alloy at a high-flux reactor and at a pulsed-neutron source [J].

Albertini, G ;

Carsughi, F ;

Coppola, R ;

Heenan, RK ;

Stefanon, M .

JOURNAL OF APPLIED CRYSTALLOGRAPHY, 1997, 30 (02) :602-606

[3] EFFECT OF VOLUME FRACTION ON PARTICLE COARSENING - THEORETICAL CONSIDERATIONS [J].

ARDELL, AJ .

ACTA METALLURGICA, 1972, 20 (01) :61-&

[4] LATE-STAGE 2-DIMENSIONAL COARSENING OF CIRCULAR CLUSTERS [J].

ARDELL, AJ .

PHYSICAL REVIEW B, 1990, 41 (04) :2554-2556

[5] Temporal behavior of the number density of particles during Ostwald ripening [J].

Ardell, AJ .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 1997, 238 (01) :108-120

[6]

ARITA K, 1988, J ELECTRON MICROSC, V37, P116

[7] EFFECTS OF CAPILLARITY AND COHERENCY ON DELTA' (AL3LI) PRECIPITATION IN DILUTE AL-LI ALLOYS AT LOW UNDERCOOLINGS [J].

BAUMANN, SF ;

WILLIAMS, DB .

ACTA METALLURGICA, 1985, 33 (06) :1069-1078

[8] EXPERIMENTAL-OBSERVATIONS ON THE NUCLEATION AND GROWTH OF DELTA' (AL3LI) IN DILUTE AL-LI ALLOYS [J].

BAUMANN, SF ;

WILLIAMS, DB .

METALLURGICAL TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 1985, 16 (07) :1203-1211

[9] KINETICS OF PARTICLE GROWTH AND PARTICLE COMPOSITION OF A COMMERCIAL AL-LI ALLOY BY MEANS OF SMALL-ANGLE SCATTERING [J].

CAPONETTI, E ;

DAGUANNO, EM ;

TRIOLO, R ;

SPOONER, S .

PHILOSOPHICAL MAGAZINE B-PHYSICS OF CONDENSED MATTER STATISTICAL MECHANICS ELECTRONIC OPTICAL AND MAGNETIC PROPERTIES, 1991, 63 (05) :1201-1212

[10] EFFECT OF VOLUME FRACTION OF PRECIPITATE ON OSTWALD RIPENING [J].

DAVIES, CKL ;

NASH, P ;

STEVENS, RN .

ACTA METALLURGICA, 1980, 28 (02) :179-189

← 1 2 3 →