Effective evaluation of interfacial energy by matching precipitate sizes measured along a composition gradient with Kampmann-Wagner numerical (KWN) modeling

被引：16

作者：

Zhang, Qiaofu ^{[1
]}

Makineni, Surendra K. ^{[2
,3
]}

Allison, John E. ^{[2
]}

Zhao, Ji-Cheng ^{[1
]}

机构：

[1] Ohio State Univ, Dept Mat Sci & Engn, 116 W 19Th Ave, Columbus, OH 43210 USA

[2] Univ Michigan, Dept Mat Sci & Engn, Ann Arbor, MI 48109 USA

[3] Max Planck Inst Eisenforsch GmbH, Dept Microstruct Phys & Alloy Design, D-40237 Dusseldorf, Germany

来源：

SCRIPTA MATERIALIA | 2019年 / 160卷

基金：

美国国家科学基金会;

关键词：

Interfacial energy; Phase precipitation; Nucleation and growth; KWN model; Diffusion multiples; MACROSCOPIC COMPOSITION GRADIENT; INTERMEDIATE TEMPERATURES; GAMMA PRECIPITATE; PHASE-DIAGRAMS; AL; DIFFUSION; TRANSFORMATIONS; NUCLEATION; ALLOYS; GROWTH;

D O I：

10.1016/j.scriptamat.2018.09.048

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

A dual-anneal diffusion multiple was utilized to generate a composition gradient via a first anneal at a high temperature followed by a second anneal at a lower temperature to induce phase precipitation as a function of composition/supersaturation. By adjusting the interfacial energy value in simulations using the classical nucleation and growth theories as implemented in the Kampmann-Wagner numerical (KWN) model and matching the simulated average precipitate sizes at different compositions with the experimental measurements along the composition gradient, the Ni3Al/fcc interfacial energy in the Ni-Al system at 700 degrees C was effectively determined to be similar to 12 mJ/m(2). (C) 2018 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：70 / 74

页数：5

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