Additive manufacturing of Ti-6Al-4V/V-interlayer/17-PH steel functionally graded material using angular and spheroidal V powders

Chan Woong Park; Raj Narayan Hajra; Nana Kwabena Adomako; Woong Choo; Seung Min Yang; Seok Jun Seo; Jeoung Han Kim

doi:10.1016/j.matlet.2023.133936

Additive manufacturing of Ti-6Al-4V/V-interlayer/17-PH steel functionally graded material using angular and spheroidal V powders

Chan Woong Park
, Raj Narayan Hajra
, Nana Kwabena Adomako
, Woong Choo
, Seung Min Yang
, Seok Jun Seo
, Jeoung Han Kim

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

7 Scopus citations

Abstract

The applications of V as an interlayer in functionally graded materials (FGMs) fail prematurely because of its angular shape. In this study, a radiofrequency thermal plasma process was employed to change the shape of V powder from angular to spheroidal. The angular and spheroidal V powders were then used to fabricate two FGMs, namely, Ti-6Al-4V/angular V/17-PH and Ti-6Al-4V/spherical V/17-PH. Unlike the angular V powder, the spherical V powder created a sound joint interface with a uniform layer and no cracks or delamination. The spheroidized V interlayer was thicker than the angular V interlayer. Unlike the spheroidized V interlayer, the angular V interface exhibited microcracks surrounded by σ phases. Moreover, Ti-6Al-4V/spherical V/17-PH exhibited superior mechanical properties. The high flowability associated with the fine spherical powders of Ti-6Al-4V/spherical V/17-PH significantly enhanced the efficiency of additive manufacturing and improved the microstructure and mechanical properties of the deposited joint.

Original language	English
Article number	133936
Journal	Materials Letters
Volume	337
DOIs	https://doi.org/10.1016/j.matlet.2023.133936
State	Published - Apr 15 2023
Externally published	Yes

Funding

This work was supported by the Korea Institute for Advancement of Technology(KIAT) grant, funded by the Republic of Korea Ministry of Trade, Industry and Energy(MOTIE)(P0002019, Human Resource Development Program for Industrial Innovation). This study was also supported by Fundamental Research Program of the Korea Institute of Material Science (PNK8180).

Keywords

Directed energy deposition
Functionally graded material
Radio-frequency thermal plasma
Stainless steel
Titanium

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10.1016/j.matlet.2023.133936

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title = "Additive manufacturing of Ti-6Al-4V/V-interlayer/17-PH steel functionally graded material using angular and spheroidal V powders",

abstract = "The applications of V as an interlayer in functionally graded materials (FGMs) fail prematurely because of its angular shape. In this study, a radiofrequency thermal plasma process was employed to change the shape of V powder from angular to spheroidal. The angular and spheroidal V powders were then used to fabricate two FGMs, namely, Ti-6Al-4V/angular V/17-PH and Ti-6Al-4V/spherical V/17-PH. Unlike the angular V powder, the spherical V powder created a sound joint interface with a uniform layer and no cracks or delamination. The spheroidized V interlayer was thicker than the angular V interlayer. Unlike the spheroidized V interlayer, the angular V interface exhibited microcracks surrounded by σ phases. Moreover, Ti-6Al-4V/spherical V/17-PH exhibited superior mechanical properties. The high flowability associated with the fine spherical powders of Ti-6Al-4V/spherical V/17-PH significantly enhanced the efficiency of additive manufacturing and improved the microstructure and mechanical properties of the deposited joint.",

keywords = "Directed energy deposition, Functionally graded material, Radio-frequency thermal plasma, Stainless steel, Titanium",

author = "\{Woong Park\}, Chan and \{Narayan Hajra\}, Raj and \{Kwabena Adomako\}, Nana and Woong Choo and Yang, \{Seung Min\} and Seo, \{Seok Jun\} and Kim, \{Jeoung Han\}",

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year = "2023",

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doi = "10.1016/j.matlet.2023.133936",

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T1 - Additive manufacturing of Ti-6Al-4V/V-interlayer/17-PH steel functionally graded material using angular and spheroidal V powders

AU - Woong Park, Chan

AU - Narayan Hajra, Raj

AU - Kwabena Adomako, Nana

AU - Choo, Woong

AU - Yang, Seung Min

AU - Seo, Seok Jun

AU - Kim, Jeoung Han

PY - 2023/4/15

Y1 - 2023/4/15

N2 - The applications of V as an interlayer in functionally graded materials (FGMs) fail prematurely because of its angular shape. In this study, a radiofrequency thermal plasma process was employed to change the shape of V powder from angular to spheroidal. The angular and spheroidal V powders were then used to fabricate two FGMs, namely, Ti-6Al-4V/angular V/17-PH and Ti-6Al-4V/spherical V/17-PH. Unlike the angular V powder, the spherical V powder created a sound joint interface with a uniform layer and no cracks or delamination. The spheroidized V interlayer was thicker than the angular V interlayer. Unlike the spheroidized V interlayer, the angular V interface exhibited microcracks surrounded by σ phases. Moreover, Ti-6Al-4V/spherical V/17-PH exhibited superior mechanical properties. The high flowability associated with the fine spherical powders of Ti-6Al-4V/spherical V/17-PH significantly enhanced the efficiency of additive manufacturing and improved the microstructure and mechanical properties of the deposited joint.

AB - The applications of V as an interlayer in functionally graded materials (FGMs) fail prematurely because of its angular shape. In this study, a radiofrequency thermal plasma process was employed to change the shape of V powder from angular to spheroidal. The angular and spheroidal V powders were then used to fabricate two FGMs, namely, Ti-6Al-4V/angular V/17-PH and Ti-6Al-4V/spherical V/17-PH. Unlike the angular V powder, the spherical V powder created a sound joint interface with a uniform layer and no cracks or delamination. The spheroidized V interlayer was thicker than the angular V interlayer. Unlike the spheroidized V interlayer, the angular V interface exhibited microcracks surrounded by σ phases. Moreover, Ti-6Al-4V/spherical V/17-PH exhibited superior mechanical properties. The high flowability associated with the fine spherical powders of Ti-6Al-4V/spherical V/17-PH significantly enhanced the efficiency of additive manufacturing and improved the microstructure and mechanical properties of the deposited joint.

KW - Directed energy deposition

KW - Functionally graded material

KW - Radio-frequency thermal plasma

KW - Stainless steel

KW - Titanium

UR - https://www.scopus.com/pages/publications/85149805098

U2 - 10.1016/j.matlet.2023.133936

DO - 10.1016/j.matlet.2023.133936

M3 - Article

AN - SCOPUS:85149805098

SN - 0167-577X

VL - 337

JO - Materials Letters

JF - Materials Letters

M1 - 133936

ER -

Additive manufacturing of Ti-6Al-4V/V-interlayer/17-PH steel functionally graded material using angular and spheroidal V powders

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