Transmission Electron Microscopy of the Rapid Solidification Microstructure Evolution and Solidification Interface Velocity Determination in Hypereutectic Al-20at.%Cu after Laser Melting

作     者：Liu, Yuzhe Zweiacker, Kai Liu, Can McKeown, Joseph T. Wiezorek, Jorg M.K. 

作者机构：Department of Mechanical Engineering and Materials Science University of Pittsburgh 636 Benedum Hall 3700 O’Hara Street PA15261 United States Materials Science Division Physical and Life Sciences Directorate Lawrence Livermore National Laboratory 7000 East Avenue LivermoreCA94551 United States Hitachi Energy Zürich Switzerland Micron Technology Singapore Singapore 

出 版 物：《SSRN》 

年 卷 期：2023年

核心收录：

主　　题：Rapid solidification 

摘      要：The evolution of the rapid solidification (RS) microstructure and the solidification interface velocity have been studied experimentally by in-situ transmission electron microscopy and postmortem characterization for hypereutectic Al-20at.%Cu (37wt.%Cu) after laser melting. Four morphologically distinct regions formed during RS via growth modes changing from θ-Al2Cu phase dendrites to eutectic cell growth, banded growth, and α-Al plane front growth. Tendency for faceting and low capacity for solute trapping limited the θ-phase dendrite growth to solidification interface velocity v © 2023, The Authors. All rights reserved.