Influence of travel speed on microstructure and mechanical properties of wire + arc additively manufactured 2219 aluminum alloy

Yinghui Zhou; Xin Lin; Nan Kang; Weidong Huang; Jiang Wang; Zhennan Wang

doi:10.1016/j.jmst.2019.06.016

Influence of travel speed on microstructure and mechanical properties of wire + arc additively manufactured 2219 aluminum alloy

Yinghui Zhou, Xin Lin, Nan Kang, Weidong Huang, Jiang Wang, Zhennan Wang

School of Materials Sience and Engineering

Northwestern Polytechnical University Xian

Research output: Contribution to journal › Article › peer-review

173 Scopus citations

Abstract

Wire + arc additive manufacturing (WAAM) was preliminarily employed to fabricate the 2219 aluminum alloy. The influence of the electric arc travel speed (TS) on the macro-morphology, microstructure, and mechanical properties were investigated. The results indicated that as the electric arc TS increased, the size and the volume fraction of equiaxed grain decreased. The high arc TS during WAAM also promoted the precipitation of the θ (Al₂Cu) phase. The volume fractions of θ″ and θ′ phases reached maximum values when TS is 350 and 250 mm/min, respectively. The thermal cycle facilitated the precipitation of the θ′ phase. In addition, the micro-hardness and tensile strength of the alloy were analyzed, and the results indicated that samples fabricated at TS of 350 mm/min possessed finer equiaxed grain and exhibited higher ultimate tensile strength (273.5 MPa) and yield strength (182.9 MPa) compared to those fabricated at 250 mm/min.

Original language	English
Pages (from-to)	143-153
Number of pages	11
Journal	Journal of Materials Science and Technology
Volume	37
DOIs	https://doi.org/10.1016/j.jmst.2019.06.016
State	Published - 15 Jan 2020

Keywords

2219 aluminum alloy
Mechanical properties
Microstructure
Wire + arc additive manufacturing

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@article{013b186c28e14512ab6dee6cb3b6033a,

title = "Influence of travel speed on microstructure and mechanical properties of wire + arc additively manufactured 2219 aluminum alloy",

abstract = "Wire + arc additive manufacturing (WAAM) was preliminarily employed to fabricate the 2219 aluminum alloy. The influence of the electric arc travel speed (TS) on the macro-morphology, microstructure, and mechanical properties were investigated. The results indicated that as the electric arc TS increased, the size and the volume fraction of equiaxed grain decreased. The high arc TS during WAAM also promoted the precipitation of the θ (Al2Cu) phase. The volume fractions of θ″ and θ′ phases reached maximum values when TS is 350 and 250 mm/min, respectively. The thermal cycle facilitated the precipitation of the θ′ phase. In addition, the micro-hardness and tensile strength of the alloy were analyzed, and the results indicated that samples fabricated at TS of 350 mm/min possessed finer equiaxed grain and exhibited higher ultimate tensile strength (273.5 MPa) and yield strength (182.9 MPa) compared to those fabricated at 250 mm/min.",

keywords = "2219 aluminum alloy, Mechanical properties, Microstructure, Wire + arc additive manufacturing",

author = "Yinghui Zhou and Xin Lin and Nan Kang and Weidong Huang and Jiang Wang and Zhennan Wang",

note = "Publisher Copyright: {\textcopyright} 2019",

year = "2020",

month = jan,

day = "15",

doi = "10.1016/j.jmst.2019.06.016",

language = "英语",

volume = "37",

pages = "143--153",

journal = "Journal of Materials Science and Technology",

issn = "1005-0302",

publisher = "Chinese Society of Metals",

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TY - JOUR

T1 - Influence of travel speed on microstructure and mechanical properties of wire + arc additively manufactured 2219 aluminum alloy

AU - Zhou, Yinghui

AU - Lin, Xin

AU - Kang, Nan

AU - Huang, Weidong

AU - Wang, Jiang

AU - Wang, Zhennan

PY - 2020/1/15

Y1 - 2020/1/15

N2 - Wire + arc additive manufacturing (WAAM) was preliminarily employed to fabricate the 2219 aluminum alloy. The influence of the electric arc travel speed (TS) on the macro-morphology, microstructure, and mechanical properties were investigated. The results indicated that as the electric arc TS increased, the size and the volume fraction of equiaxed grain decreased. The high arc TS during WAAM also promoted the precipitation of the θ (Al2Cu) phase. The volume fractions of θ″ and θ′ phases reached maximum values when TS is 350 and 250 mm/min, respectively. The thermal cycle facilitated the precipitation of the θ′ phase. In addition, the micro-hardness and tensile strength of the alloy were analyzed, and the results indicated that samples fabricated at TS of 350 mm/min possessed finer equiaxed grain and exhibited higher ultimate tensile strength (273.5 MPa) and yield strength (182.9 MPa) compared to those fabricated at 250 mm/min.

AB - Wire + arc additive manufacturing (WAAM) was preliminarily employed to fabricate the 2219 aluminum alloy. The influence of the electric arc travel speed (TS) on the macro-morphology, microstructure, and mechanical properties were investigated. The results indicated that as the electric arc TS increased, the size and the volume fraction of equiaxed grain decreased. The high arc TS during WAAM also promoted the precipitation of the θ (Al2Cu) phase. The volume fractions of θ″ and θ′ phases reached maximum values when TS is 350 and 250 mm/min, respectively. The thermal cycle facilitated the precipitation of the θ′ phase. In addition, the micro-hardness and tensile strength of the alloy were analyzed, and the results indicated that samples fabricated at TS of 350 mm/min possessed finer equiaxed grain and exhibited higher ultimate tensile strength (273.5 MPa) and yield strength (182.9 MPa) compared to those fabricated at 250 mm/min.

KW - 2219 aluminum alloy

KW - Mechanical properties

KW - Microstructure

KW - Wire + arc additive manufacturing

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U2 - 10.1016/j.jmst.2019.06.016

DO - 10.1016/j.jmst.2019.06.016

M3 - 文章

AN - SCOPUS:85074463412

SN - 1005-0302

VL - 37

SP - 143

EP - 153

JO - Journal of Materials Science and Technology

JF - Journal of Materials Science and Technology

ER -

Influence of travel speed on microstructure and mechanical properties of wire + arc additively manufactured 2219 aluminum alloy

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Keywords

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