LATE STAGES OF DELTA' PRECIPITATION IN AN AL-LI ALLOY BY SMALL-ANGLE NEUTRON-SCATTERING

被引：42
作者：
ABIS, S
CACIUFFO, R
CARSUGHI, F
COPPOLA, R
MAGNANI, M
RUSTICHELLI, F
STEFANON, M
机构：
[1] UNIV ANCONA, DIPARTIMENTO SCI MAT & DELLA TERRA, I-60131 ANCONA, ITALY
[2] RUTHERFORD APPLETON LAB, DIV NEUTRON SCI, DIDCOT OX11 0QX, OXON, ENGLAND
[3] UNIV ANCONA, IST FIS MED, I-60131 ANCONA, ITALY
[4] ENTE NAZL ENERGIA ATOM, CTR RIC ENERGIA CASACCIA, I-00100 ROME, ITALY
[5] ENTE NAZL ENERGIA ATOM, CTR RIC ENERGIA E CLEMENTEL, I-40138 BOLOGNA, ITALY
[6] FORSCHUNGSZENTRUM JULICH, FORSCHUNGSZENTRUM, INST FESTKORPERFORSCH, W-5170 JULICH 1, GERMANY
来源：
PHYSICAL REVIEW B | 1990年 / 42卷 / 04期
关键词：
D O I：
10.1103/PhysRevB.42.2275
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The late stage of phase separation in an Al Li(3 wt. %) alloy aged at 463 K has been studied by small-angle neutron scattering. The time dependence of the distribution of particle sizes has been obtained from an analysis of the cross-section curves measured in absolute units. The coarsening of the -Al3Li precipitates obeys Ostwald ripening kinetics but diffusion interaction effects are needed to account for the width and shape of the size distribution functions. The center-to-center interparticle distances have been estimated from an analysis of the interparticle structure factor describing the interference effects due to the spatial correlation between the precipitates. © 1990 The American Physical Society.
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页码：2275 / 2281
页数：7
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