THE SURFACE-ENERGY OF METASTABLE AL3LI PRECIPITATES FROM COARSENING KINETICS

被引：29

作者：

HOYT, JJ ^{[1
]}

SPOONER, S ^{[1
]}

机构：

[1] OAK RIDGE NATL LAB, DIV SOLID STATE, OAK RIDGE, TN 37831 USA

来源：

ACTA METALLURGICA ET MATERIALIA | 1991年 / 39卷 / 04期

关键词：

D O I：

10.1016/0956-7151(91)90137-P

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Small angle X-ray scattering has been used to measure the coarsening kinetics of metastable Al3Li precipitates in a dilute Al-Li binary alloy. The results are compared to prevous transmission electron microscopy studies of similar alloys. Lifschitz-Slyozov-Wagner coarsening theory was invoked as a means of obtaining the alpha-/Al3Li interfacial energy. However, corrections accounting for effects due to finite volume fractions and limited solubility of Li in the precipitate phase are included. The surface energy was found to be approximately 0.005 J/m2, significantly less than previously reported. A possible explanation for the discrepancy is discussed.

引用

页码：689 / 693

页数：5

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