A High-Resolution Population Dynamic Model for Predicting Homogeneous Precipitation Kinetics of Spherical Precipitates During Thermal Aging

被引：3

作者：

Wang, Qing-Liang ^{[1
]}

Xiong, Hao ^{[1
]}

机构：

[1] Yanshan Univ, Natl Engn Res Ctr Equipment & Technol Cold Rolled, Qinhuangdao 066004, Hebei, Peoples R China

来源：

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE | 2021年 / 52卷 / 11期

关键词：

AL-SC; FE-CU; AL3SC; SCANDIUM; ALLOYS; NUCLEATION; SIMULATION; COHERENCY; EVOLUTION; SCHEMES;

D O I：

10.1007/s11661-021-06443-x

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A high-resolution population dynamic model has been developed to describe the microstructure evolution in homogeneous precipitation of spherical precipitates during thermal aging. By solving the continuity equation with a high-resolution scheme based on the flux-limiter methods for hyperbolic conservation laws, this model has second-order accuracy in smooth regions and gives well-resolved, nonoscillatory discontinuities formed during the nucleation stage. The predictions of the model are in very good agreement with the reported experimental data for Al-Sc alloys, especially at early aging time. Through fitting the experimental data, a value of 180 +/- 5 mJ m(-2) is obtained for the Al/Al3Sc interfacial energy, which is reliable on condition that the aging time is not very long. (C) The Minerals, Metals & Materials Society and ASM International 2021

引用

页码：4987 / 4996

页数：10

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