Inoculation treatment of an additively manufactured 2024 aluminium alloy with titanium nanoparticles

Tan, Qiyang1; Zhang, Jingqi1; Sun, Qiang1; Fan, Zhiqi1; Li, Gan1,2; Yin, Yu1; Liu, Yingang1; Zhang, Ming-Xing1

2020-09

10.1016/j.actamat.2020.06.026

ACTA MATERIALIA   影响因子和分区

1359-6454

1873-2453

Considerable studies on metal selective laser melting (SLM) have proved the necessity to refine microstructure parts fabricated by SLM in order to eliminate property anisotropy, hot-tearing and to increase the SLM-processability. In the present work, Ti nanoparticles, at the first time, were discovered to be an extremely effective inoculant for an SLMed 2024 aluminium alloy. 0.7 wt% addition of Ti nanoparticles was capable of substantially eliminating the hot-tearing cracks and columnar structure, and refining the grains in the SLMed 2024 alloy in a broad processing window. The substantial grain refinement in the Ti-inoculated 2024 alloy was attributed to the in-situ formation of Al3Ti nanoparticles with a L1(2) ordered structure, which formed a coherent interface with Al matrix and therefore significantly promoted the heterogeneous nucleation of the alpha-Al during solidification of melt pools in the SLM process. After a conventional T6 heat treatment, this SLMed alloy exhibited a superior balance of strength and ductility (tensile strength was up to 432 +/- 20 MPa and elongation of 10 +/- 0.8%), which was comparable to its wrought counterpart. This work can be considered as a breakthrough in research of fabricating high-strength aluminium alloys using SLM. (C) 2020 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

Selective laser melting HIGH-ENTROPY ALLOY 2024 aluminium alloys CU-MG ALLOYS Grain refinement GRAIN-REFINEMENT EBSD MECHANICAL-PROPERTIES TEM HEAT-TREATMENT ALSI10MG ALLOY ORIENTATION RELATIONSHIPS INTERMETALLIC PHASES ZR CONTENT AL

SCI ; EI

英语

ESI高被引

其他

ARC[DP180102454]

Materials Science ; Metallurgy & Metallurgical Engineering

Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering

WOS:000557651000001

PERGAMON-ELSEVIER SCIENCE LTD

20202608871817

Refining ; Tensile strength ; Binary alloys ; Grain size and shape ; Aluminum alloys ; High strength alloys ; Selective laser melting ; Titanium alloys ; Heat treatment ; Nanoparticles ; Nucleation ; Melting

Metallurgy:531.1 ; Heat Treatment Processes:537.1 ; Aluminum Alloys:541.2 ; Titanium and Alloys:542.3 ; Reproduction, Copying:745.2 ; Nanotechnology:761 ; Chemical Operations:802.3 ; Solid State Physics:933 ; Crystal Growth:933.1.2

MATERIALS SCIENCE

Web of Science

1.Univ Queensland, Sch Mech & Min Engn, St Lucia, Qld 4072, Australia;
2.Southern Univ Sci & Technol, Dept Mech & Energy Engn, Shenzhen 518055, Guangdong, Peoples R China

Tan, Qiyang,Zhang, Jingqi,Sun, Qiang,et al. Inoculation treatment of an additively manufactured 2024 aluminium alloy with titanium nanoparticles[J]. ACTA MATERIALIA,2020,196:1-16.

Tan, Qiyang.,Zhang, Jingqi.,Sun, Qiang.,Fan, Zhiqi.,Li, Gan.,...&Zhang, Ming-Xing.(2020).Inoculation treatment of an additively manufactured 2024 aluminium alloy with titanium nanoparticles.ACTA MATERIALIA,196,1-16.

Tan, Qiyang,et al."Inoculation treatment of an additively manufactured 2024 aluminium alloy with titanium nanoparticles".ACTA MATERIALIA 196(2020):1-16.