Effect of grain refinement on strain hardening behavior of nickel - based superalloy fabricated by wire arc additive manufacturing

Mingfang Xu; Yuhua Chen; Timing Zhang; Jilin Xie; Peng He; Kang Wei

doi:10.1016/j.matlet.2022.132723

Effect of grain refinement on strain hardening behavior of nickel - based superalloy fabricated by wire arc additive manufacturing

Mingfang Xu
, Yuhua Chen^*
, Timing Zhang
, Jilin Xie
, Peng He
, Kang Wei

^*Corresponding author for this work

School of Materials Science and Engineering

Nanchang Hangkong University
Harbin Institute of Technology

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

13 Scopus citations

Abstract

Traditional wire arc additive manufacturing (WAAM) is easy to cause epitaxial growth of columnar grains along the building direction, which limits its further development in engineering applications. In this paper, the Inconel 625 alloy was fabricated by ultrasonic - assisted wire arc additive manufacturing (UAAM), and the effect of ultrasonic on the microstructure and mechanical properties was investigated. The results show that the ultrasonic wave effectively refines the grains and promotes the increase of mechanical properties. After applying ultrasonic assistance, the average ultimate tensile strength (UTS) of the samples increased from 650.54 MPa to 797.09 MPa, and the elongation decreased from 82.05% to 66.14%. Due to the decrease in elongation, the strain hardening exponent of the UAAM samples decreased by 19.72% compared with the AM samples.

Original language	English
Article number	132723
Journal	Materials Letters
Volume	324
DOIs	https://doi.org/10.1016/j.matlet.2022.132723
State	Published - 1 Oct 2022

Keywords

Additive manufacturing
Inconel 625 alloy
Mechanical properties
Microstructure
Strain hardening

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10.1016/j.matlet.2022.132723

Cite this

@article{4a36516de467421e98996db80a00e130,

title = "Effect of grain refinement on strain hardening behavior of nickel - based superalloy fabricated by wire arc additive manufacturing",

abstract = "Traditional wire arc additive manufacturing (WAAM) is easy to cause epitaxial growth of columnar grains along the building direction, which limits its further development in engineering applications. In this paper, the Inconel 625 alloy was fabricated by ultrasonic - assisted wire arc additive manufacturing (UAAM), and the effect of ultrasonic on the microstructure and mechanical properties was investigated. The results show that the ultrasonic wave effectively refines the grains and promotes the increase of mechanical properties. After applying ultrasonic assistance, the average ultimate tensile strength (UTS) of the samples increased from 650.54 MPa to 797.09 MPa, and the elongation decreased from 82.05\% to 66.14\%. Due to the decrease in elongation, the strain hardening exponent of the UAAM samples decreased by 19.72\% compared with the AM samples.",

keywords = "Additive manufacturing, Inconel 625 alloy, Mechanical properties, Microstructure, Strain hardening",

author = "Mingfang Xu and Yuhua Chen and Timing Zhang and Jilin Xie and Peng He and Kang Wei",

note = "Publisher Copyright: {\textcopyright} 2022",

year = "2022",

month = oct,

day = "1",

doi = "10.1016/j.matlet.2022.132723",

language = "英语",

volume = "324",

journal = "Materials Letters",

issn = "0167-577X",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - Effect of grain refinement on strain hardening behavior of nickel - based superalloy fabricated by wire arc additive manufacturing

AU - Xu, Mingfang

AU - Chen, Yuhua

AU - Zhang, Timing

AU - Xie, Jilin

AU - He, Peng

AU - Wei, Kang

PY - 2022/10/1

Y1 - 2022/10/1

N2 - Traditional wire arc additive manufacturing (WAAM) is easy to cause epitaxial growth of columnar grains along the building direction, which limits its further development in engineering applications. In this paper, the Inconel 625 alloy was fabricated by ultrasonic - assisted wire arc additive manufacturing (UAAM), and the effect of ultrasonic on the microstructure and mechanical properties was investigated. The results show that the ultrasonic wave effectively refines the grains and promotes the increase of mechanical properties. After applying ultrasonic assistance, the average ultimate tensile strength (UTS) of the samples increased from 650.54 MPa to 797.09 MPa, and the elongation decreased from 82.05% to 66.14%. Due to the decrease in elongation, the strain hardening exponent of the UAAM samples decreased by 19.72% compared with the AM samples.

AB - Traditional wire arc additive manufacturing (WAAM) is easy to cause epitaxial growth of columnar grains along the building direction, which limits its further development in engineering applications. In this paper, the Inconel 625 alloy was fabricated by ultrasonic - assisted wire arc additive manufacturing (UAAM), and the effect of ultrasonic on the microstructure and mechanical properties was investigated. The results show that the ultrasonic wave effectively refines the grains and promotes the increase of mechanical properties. After applying ultrasonic assistance, the average ultimate tensile strength (UTS) of the samples increased from 650.54 MPa to 797.09 MPa, and the elongation decreased from 82.05% to 66.14%. Due to the decrease in elongation, the strain hardening exponent of the UAAM samples decreased by 19.72% compared with the AM samples.

KW - Additive manufacturing

KW - Inconel 625 alloy

KW - Mechanical properties

KW - Microstructure

KW - Strain hardening

UR - https://www.scopus.com/pages/publications/85133670301

U2 - 10.1016/j.matlet.2022.132723

DO - 10.1016/j.matlet.2022.132723

M3 - 文章

AN - SCOPUS:85133670301

SN - 0167-577X

VL - 324

JO - Materials Letters

JF - Materials Letters

M1 - 132723

ER -

Effect of grain refinement on strain hardening behavior of nickel - based superalloy fabricated by wire arc additive manufacturing

Abstract

Keywords

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