Effects of Micron/Submicron TiC on Additively Manufactured AlSi10Mg: A Comprehensive Study from Computer Simulation to Mechanical and Microstructural Analysis

Zhou，S. Y.1,2; Wang，Z. Y.1; Su，Y.2; Wang，H.2; Liu，G.1; Song，T. T.3; Yan，M.1

2020

10.1007/s11837-019-03984-w

JOM   影响因子和分区

1047-4838

1543-1851

The Al-based metal matrix composites (AMMCs) reinforced by micron- and submicron-scale TiC ceramic particles were manufactured by selective laser melting (SLM) additive manufacturing. The influences of SLM processing parameters such as volumetric energy density (ɛ) and laser absorptivity of powders on the densification, microstructural evolution, mechanical behavior and corrosion behavior of the AMMCs were systematically studied, based on which the strengthening mechanisms of the SLM-processed AMMC components were clarified. Finite element simulation was run to assist in revealing the underlying mechanism. Fundamental processes such as the Marangoni flow were discussed. Through these efforts, the as-printed AlSi10Mg/1 μm TiC was SLMed into crack-free, high-density parts (= 99.2%) when ɛ was > 65 J/mm. For the as-printed AlSi10Mg/1 μm TiC samples prepared by the best SLM parameters, high tensile strength (470 ± 14 MPa) was achieved. Average hardness of ~ 169 HV0.1 and a considerably low friction coefficient with a mean value of ~ 0.3 were also obtained. The homogeneously distributed submicron TiC particles reduced the wear rate to 1.68 × 10 mm/N/m. The as-printed AlSi10Mg/1 μm TiC parts showed better performance on corrosion resistance as well due to the high relative density achieved along with continuous and compatible bonding interfaces with the Al alloy matrix. Use of large-sized TiC (e.g., 30 μm) particles should be avoided, however, since they led to reduced mechanical properties and a poorer corrosion resistance.

SCI ; EI

英语

第一 ; 通讯

Shenzhen Science and Technology Innovation Commission[ZDSYS201703031748354][JCYJ20170817110331228] ; Research and Development Program Project in Key Areas of Guangdong Province[2019B090907001] ; National Science Foundation of Guangdong Province[2016A030313756]

Materials Science ; Metallurgy & Metallurgical Engineering ; Mineralogy ; Mining & Mineral Processing

Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering ; Mineralogy ; Mining & Mineral Processing

WOS:000574122600001

SPRINGER

20200207997463

Additives ; Corrosive effects ; Metallic matrix composites ; Selective laser melting ; Corrosion resistance ; Friction ; Aluminum corrosion ; Tensile strength ; Aluminum alloys ; Titanium alloys

Metallurgy and Metallography:531 ; Metals Corrosion:539.1 ; Aluminum:541.1 ; Aluminum Alloys:541.2 ; Titanium and Alloys:542.3 ; Reproduction, Copying:745.2 ; Chemical Agents and Basic Industrial Chemicals:803 ; Inorganic Compounds:804.2

MATERIALS SCIENCE

2-s2.0-85077627320

Scopus

1.Department of Materials Science and Engineering,Shenzhen Key Laboratory for Additive Manufacturing of High-performance Materials,Southern University of Science and Technology,Shenzhen,518055,China
2.Guangdong Provincial Key Laboratory of Micro/Nano Optomechatronics Engineering,College of Mechatronics and Control Engineering,Shenzhen University,Shenzhen,518060,China
3.Centre for Additive Manufacturing,School of Engineering,RMIT University,Melbourne,3000,Australia

Zhou，S. Y.,Wang，Z. Y.,Su，Y.,et al. Effects of Micron/Submicron TiC on Additively Manufactured AlSi10Mg: A Comprehensive Study from Computer Simulation to Mechanical and Microstructural Analysis[J]. JOM,2020,72(10):3693-3704.

Zhou，S. Y..,Wang，Z. Y..,Su，Y..,Wang，H..,Liu，G..,...&Yan，M..(2020).Effects of Micron/Submicron TiC on Additively Manufactured AlSi10Mg: A Comprehensive Study from Computer Simulation to Mechanical and Microstructural Analysis.JOM,72(10),3693-3704.

Zhou，S. Y.,et al."Effects of Micron/Submicron TiC on Additively Manufactured AlSi10Mg: A Comprehensive Study from Computer Simulation to Mechanical and Microstructural Analysis".JOM 72.10(2020):3693-3704.