Intermetallic Phases Identification and Diffusion Simulation in Twin-Roll Cast Al-Fe Clad Sheet

被引：10

作者：

Krivska, Barbora ^{[1
]}

Slapakova, Michaela ^{[1
]}

Vesely, Jozef ^{[1
]}

Kihoulou, Martin ^{[1
]}

Fekete, Klaudia ^{[1
]}

Minarik, Peter ^{[1
]}

Kralik, Rostislav ^{[1
]}

Grydin, Olexandr ^{[2
]}

Stolbchenko, Mykhailo ^{[2
]}

Schaper, Mirko ^{[2
]}

机构：

[1] Charles Univ Prague, Fac Math & Phys, Ke Karlovu 5, Prague 12116, Czech Republic

[2] Univ Paderborn, Chair Mat Sci, Warburger Str 100, D-33098 Paderborn, Germany

来源：

MATERIALS | 2021年 / 14卷 / 24期

关键词：

TEM SAED; diffusion; Al5Fe2; Al13Fe4; Boltzmann-Matano method; CRYSTAL-STRUCTURES; ALUMINUM; MICROSTRUCTURE; GROWTH; SYSTEM;

D O I：

10.3390/ma14247771

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Aluminium steel clad materials have high potential for industrial applications. Their mechanical properties are governed by an intermetallic layer, which forms upon heat treatment at the Al-Fe interface. Transmission electron microscopy was employed to identify the phases present at the interface by selective area electron diffraction and energy dispersive spectroscopy. Three phases were identified: orthorhombic Al5Fe2, monoclinic Al13Fe4 and cubic Al19Fe4MnSi2. An effective interdiffusion coefficient dependent on concentration was determined according to the Boltzmann-Matano method. The highest value of the interdiffusion coefficient was reached at the composition of the intermetallic phases. Afterwards, the process of diffusion considering the evaluated interdiffusion coefficient was simulated using the finite element method. Results of the simulations revealed that growth of the intermetallic phases proceeds preferentially in the direction of aluminium.

引用

页数：11

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