Particles Morphology and Forming Analysis of Al-Si-Cu-Mg Alloys
Shouren Wang1, Yiping Tang1, Yang Qiao1, JaeHyung Cho2and Jixue Zhou3
(1. School of Mechanical Engineering, University of Jinan, Ji’nan, 250022, China; 2. Korea Institute of Materials Science, 66 Sangnam-dong, Changwon 641010, Korea; 3. Institute of New Materials Research, Shandong Academy of Sciences, Jinan 250014,China)
Abstract:
The study aims at observation of precipitation distribution micrograph and analysis of forming kinetics mechanism of microstructure particles of Al-Si-Cu-Mg alloys. The microstructure morphology of some particles such as primary silicon and precipitates from the matrix of Al-Si-Cu-Mg alloys is observed by OM, SEM and EDS. The primary silicon forming kinetics is analyzed by EBSD. Twin plane re-entrant edge growth mode results in the blocky or diamonded TRD morphology formation. The precipitates of Q-Al5Cu2Mg8Si6, θ-Al2Cu, β-Al5FeSi and ε-Mg2Si are characterized by EDS and they are distributed in the eutectic region. The forming kinetics of them is analyzed by DSC. Six peaks are present in particles formation in different temperature ranges. The particles forming are determined by the analysis of the DSC traces during heating and cooling of Al-Si-Cu-Mg alloys.
Key words: precipitates morphology kinetics Al-Si-Cu-Mg alloy DSC
DOI：10.11916/j.issn.1005-9113.2015.06.012
Clc Number:TG135 .6
Fund:
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Particles Morphology and Forming Analysis of Al-Si-Cu-Mg Alloys
本站小编 哈尔滨工业大学/2019-10-23
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