Impact of DED process parameters on the metallurgical characteristics of 17-4 PH SS deposited using DED

I. Mathoho; E. T. Akinlabi; N. Arthur; M. Tlotleng

doi:10.1016/j.cirpj.2020.07.007

Impact of DED process parameters on the metallurgical characteristics of 17-4 PH SS deposited using DED

I. Mathoho, E. T. Akinlabi, N. Arthur, M. Tlotleng^*

^*Corresponding author for this work

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

38 Citations (Scopus)

Abstract

This study investigated the influence direct energy deposition (DED) process parameters have on the metallurgical characteristics (porosity, microstructural evolution, microhardness, and corrosion behavior) of 17−4 PH stainless steel powder. During the deposition, laser power and scanning speed were varied from 300 W to 400 W and from 7.62 mm/s to 12.7 mm/s, respectively while powder feed rate and the hatch overlap were kept constant at 4.7 g/min and 75%, respectively. Coupons were prepared for metallographic characterization in the as-built and heat treated condition. It was established that laser power scanning speed, and heat treatment had a meaningful impact on metallurgical characteristics studied.

Original language	English
Pages (from-to)	450-458
Number of pages	9
Journal	CIRP Journal of Manufacturing Science and Technology
Volume	31
DOIs	https://doi.org/10.1016/j.cirpj.2020.07.007
Publication status	Published - Nov 2020
Externally published	Yes

Keywords

17-4 PH stainless steel
Corrosion
LENS
Microhardness
Microstructure
Porosity

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10.1016/j.cirpj.2020.07.007

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title = "Impact of DED process parameters on the metallurgical characteristics of 17-4 PH SS deposited using DED",

abstract = "This study investigated the influence direct energy deposition (DED) process parameters have on the metallurgical characteristics (porosity, microstructural evolution, microhardness, and corrosion behavior) of 17−4 PH stainless steel powder. During the deposition, laser power and scanning speed were varied from 300 W to 400 W and from 7.62 mm/s to 12.7 mm/s, respectively while powder feed rate and the hatch overlap were kept constant at 4.7 g/min and 75\%, respectively. Coupons were prepared for metallographic characterization in the as-built and heat treated condition. It was established that laser power scanning speed, and heat treatment had a meaningful impact on metallurgical characteristics studied.",

keywords = "17-4 PH stainless steel, Corrosion, LENS, Microhardness, Microstructure, Porosity",

author = "I. Mathoho and Akinlabi, \{E. T.\} and N. Arthur and M. Tlotleng",

note = "Funding Information: Sincere gratitude to the South African Department of Higher Education, Science, and innovation , and the Collaboration Program on Additive Manufacturing (CPAM) for their financial support. Prof Sisa Pityana is thanked for his utmost scientific rigor and meaningful mentoring while Mr Washington Makoana is thanked for his assistance with the experimental set-up. Publisher Copyright: {\textcopyright} 2020 CIRP",

year = "2020",

month = nov,

doi = "10.1016/j.cirpj.2020.07.007",

language = "English",

volume = "31",

pages = "450--458",

journal = "CIRP Journal of Manufacturing Science and Technology",

issn = "1755-5817",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - Impact of DED process parameters on the metallurgical characteristics of 17-4 PH SS deposited using DED

AU - Mathoho, I.

AU - Akinlabi, E. T.

AU - Arthur, N.

AU - Tlotleng, M.

N1 - Funding Information: Sincere gratitude to the South African Department of Higher Education, Science, and innovation , and the Collaboration Program on Additive Manufacturing (CPAM) for their financial support. Prof Sisa Pityana is thanked for his utmost scientific rigor and meaningful mentoring while Mr Washington Makoana is thanked for his assistance with the experimental set-up. Publisher Copyright: © 2020 CIRP

PY - 2020/11

Y1 - 2020/11

N2 - This study investigated the influence direct energy deposition (DED) process parameters have on the metallurgical characteristics (porosity, microstructural evolution, microhardness, and corrosion behavior) of 17−4 PH stainless steel powder. During the deposition, laser power and scanning speed were varied from 300 W to 400 W and from 7.62 mm/s to 12.7 mm/s, respectively while powder feed rate and the hatch overlap were kept constant at 4.7 g/min and 75%, respectively. Coupons were prepared for metallographic characterization in the as-built and heat treated condition. It was established that laser power scanning speed, and heat treatment had a meaningful impact on metallurgical characteristics studied.

AB - This study investigated the influence direct energy deposition (DED) process parameters have on the metallurgical characteristics (porosity, microstructural evolution, microhardness, and corrosion behavior) of 17−4 PH stainless steel powder. During the deposition, laser power and scanning speed were varied from 300 W to 400 W and from 7.62 mm/s to 12.7 mm/s, respectively while powder feed rate and the hatch overlap were kept constant at 4.7 g/min and 75%, respectively. Coupons were prepared for metallographic characterization in the as-built and heat treated condition. It was established that laser power scanning speed, and heat treatment had a meaningful impact on metallurgical characteristics studied.

KW - 17-4 PH stainless steel

KW - Corrosion

KW - LENS

KW - Microhardness

KW - Microstructure

KW - Porosity

UR - https://www.scopus.com/pages/publications/85089464399

U2 - 10.1016/j.cirpj.2020.07.007

DO - 10.1016/j.cirpj.2020.07.007

M3 - Article

AN - SCOPUS:85089464399

SN - 1755-5817

VL - 31

SP - 450

EP - 458

JO - CIRP Journal of Manufacturing Science and Technology

JF - CIRP Journal of Manufacturing Science and Technology

ER -

Impact of DED process parameters on the metallurgical characteristics of 17-4 PH SS deposited using DED

Abstract

Keywords

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