Precipitate formation in cerium-modified additively manufactured AlSi10Mg alloy

被引：5

作者：

Yakubov, Vladislav ^{[1
]}

He, Peidong ^{[1
]}

Kruzic, Jamie J. ^{[1
]}

Li, Xiaopeng ^{[1
]}

机构：

[1] Univ New South Wales Unsw Sydney, Sch Mech & Mfg Engn, Sydney, NSW, Australia

来源：

AUSTRALIAN JOURNAL OF MECHANICAL ENGINEERING | 2023年 / 21卷 / 04期

基金：

澳大利亚研究理事会;

关键词：

Laser powder bed fusion; Additive manufacturing; Aluminium metal matrix composites; Mechanical properties; LASER MELTED ALSI10MG; MECHANICAL-PROPERTIES; RAPID SOLIDIFICATION; AL-CE; MICROSTRUCTURE; BEHAVIOR; OPTIMIZATION;

D O I：

10.1080/14484846.2021.1997133

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

AlSi10Mg alloy modified with 4 wt.% cerium was fabricated by selective laser melting and subjected to a T6 solutionizing (2 h at 535 degrees C) and ageing (10 h at 160 degrees C) heat treatment. Microstructure, precipitates and hardness of as-built and heat-treated samples were analysed. Results show that as-built samples contained a refined cellular-dendritic microstructure as well as Ce-containing precipitates at heat-affected zone (HAZ). After T6 heat treatment, cellular-dendritic microstructure converted to fine microstructure containing Si agglomerates and submicron Ce-containing precipitates, while precipitates present in as-built HAZ underwent spheroidisation. Hardness testing showed that addition of Ce did not affect alloy hardness. However, the fine dispersion of Ce-containing precipitates and good coarsening resistance shows that Ce is a promising alloying element for the development of heat-resistant alloys.

引用

页码：1300 / 1310

页数：11

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