Metallurgical Characteristics of Laser Peened 17-4 PH SS Processed by LENS Technique

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

doi:10.1007/978-3-030-05861-6_25

Metallurgical Characteristics of Laser Peened 17-4 PH SS Processed by LENS Technique

I. Mathoho
, E. T. Akinlabi
, N. Arthur
, M. Tlotleng
, B. Masina

Mechanical Engineering Science

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

5 Citations (Scopus)

Abstract

This study investigated the effect of laser peening on the surface integrity (surface roughness, microstructure and microhardness) of 17-4 PH stainless steel components which were built through the direct energy deposition (DED). Additive manufacturing (AM) technique was performed on laser engineered net shaping (LENS) system. Components were built through the same energy density of 312.9 J/mm³ and subsequently subjected to laser peening so as to modify the surface of the material. However, one component was peened for three cycles and the other one for six cycles. The current study discovered that the surface roughness improved by 28% for three cycles of peening and 42% for six cycles of peening. Moreover, it was found that laser peening caused deformation of grains just below the peened surface which consequently resulted in increment of microhardness.

Original language	English
Title of host publication	TMS 2019 148th Annual Meeting and Exhibition Supplemental Proceedings
Publisher	Springer International Publishing
Pages	279-285
Number of pages	7
ISBN (Print)	9783030058609
DOIs	https://doi.org/10.1007/978-3-030-05861-6_25
Publication status	Published - 2019
Event	148th Annual Meeting and Exhibition of The Minerals, Metals and Materials Society, TMS 2019 - San Antonio, United States Duration: 10 Mar 2019 → 14 Mar 2019

Publication series

Name	Minerals, Metals and Materials Series
ISSN (Print)	2367-1181
ISSN (Electronic)	2367-1696

Conference

Conference	148th Annual Meeting and Exhibition of The Minerals, Metals and Materials Society, TMS 2019
Country/Territory	United States
City	San Antonio
Period	10/03/19 → 14/03/19

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 9 Industry, Innovation, and Infrastructure

Keywords

17-4 PH SS
LENS
Microhardness
Microstructure
Surface roughness

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Energy Engineering and Power Technology
Mechanics of Materials
Metals and Alloys
Materials Chemistry

Access to Document

10.1007/978-3-030-05861-6_25

Cite this

Mathoho, I., Akinlabi, E. T., Arthur, N., Tlotleng, M., & Masina, B. (2019). Metallurgical Characteristics of Laser Peened 17-4 PH SS Processed by LENS Technique. In TMS 2019 148th Annual Meeting and Exhibition Supplemental Proceedings (pp. 279-285). (Minerals, Metals and Materials Series). Springer International Publishing. https://doi.org/10.1007/978-3-030-05861-6_25

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title = "Metallurgical Characteristics of Laser Peened 17-4 PH SS Processed by LENS Technique",

abstract = "This study investigated the effect of laser peening on the surface integrity (surface roughness, microstructure and microhardness) of 17-4 PH stainless steel components which were built through the direct energy deposition (DED). Additive manufacturing (AM) technique was performed on laser engineered net shaping (LENS) system. Components were built through the same energy density of 312.9 J/mm3 and subsequently subjected to laser peening so as to modify the surface of the material. However, one component was peened for three cycles and the other one for six cycles. The current study discovered that the surface roughness improved by 28\% for three cycles of peening and 42\% for six cycles of peening. Moreover, it was found that laser peening caused deformation of grains just below the peened surface which consequently resulted in increment of microhardness.",

keywords = "17-4 PH SS, LENS, Microhardness, Microstructure, Surface roughness",

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

note = "Publisher Copyright: {\textcopyright} 2019, The Minerals, Metals \& Materials Society.; 148th Annual Meeting and Exhibition of The Minerals, Metals and Materials Society, TMS 2019 ; Conference date: 10-03-2019 Through 14-03-2019",

year = "2019",

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language = "English",

isbn = "9783030058609",

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Mathoho, I, Akinlabi, ET, Arthur, N, Tlotleng, M & Masina, B 2019, Metallurgical Characteristics of Laser Peened 17-4 PH SS Processed by LENS Technique. in TMS 2019 148th Annual Meeting and Exhibition Supplemental Proceedings. Minerals, Metals and Materials Series, Springer International Publishing, pp. 279-285, 148th Annual Meeting and Exhibition of The Minerals, Metals and Materials Society, TMS 2019, San Antonio, United States, 10/03/19. https://doi.org/10.1007/978-3-030-05861-6_25

Metallurgical Characteristics of Laser Peened 17-4 PH SS Processed by LENS Technique. / Mathoho, I.; Akinlabi, E. T.; Arthur, N. et al.
TMS 2019 148th Annual Meeting and Exhibition Supplemental Proceedings. Springer International Publishing, 2019. p. 279-285 (Minerals, Metals and Materials Series).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

TY - GEN

T1 - Metallurgical Characteristics of Laser Peened 17-4 PH SS Processed by LENS Technique

AU - Mathoho, I.

AU - Akinlabi, E. T.

AU - Arthur, N.

AU - Tlotleng, M.

AU - Masina, B.

PY - 2019

Y1 - 2019

N2 - This study investigated the effect of laser peening on the surface integrity (surface roughness, microstructure and microhardness) of 17-4 PH stainless steel components which were built through the direct energy deposition (DED). Additive manufacturing (AM) technique was performed on laser engineered net shaping (LENS) system. Components were built through the same energy density of 312.9 J/mm3 and subsequently subjected to laser peening so as to modify the surface of the material. However, one component was peened for three cycles and the other one for six cycles. The current study discovered that the surface roughness improved by 28% for three cycles of peening and 42% for six cycles of peening. Moreover, it was found that laser peening caused deformation of grains just below the peened surface which consequently resulted in increment of microhardness.

AB - This study investigated the effect of laser peening on the surface integrity (surface roughness, microstructure and microhardness) of 17-4 PH stainless steel components which were built through the direct energy deposition (DED). Additive manufacturing (AM) technique was performed on laser engineered net shaping (LENS) system. Components were built through the same energy density of 312.9 J/mm3 and subsequently subjected to laser peening so as to modify the surface of the material. However, one component was peened for three cycles and the other one for six cycles. The current study discovered that the surface roughness improved by 28% for three cycles of peening and 42% for six cycles of peening. Moreover, it was found that laser peening caused deformation of grains just below the peened surface which consequently resulted in increment of microhardness.

KW - 17-4 PH SS

KW - LENS

KW - Microhardness

KW - Microstructure

KW - Surface roughness

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U2 - 10.1007/978-3-030-05861-6_25

DO - 10.1007/978-3-030-05861-6_25

M3 - Conference contribution

AN - SCOPUS:85064863537

SN - 9783030058609

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BT - TMS 2019 148th Annual Meeting and Exhibition Supplemental Proceedings

PB - Springer International Publishing

T2 - 148th Annual Meeting and Exhibition of The Minerals, Metals and Materials Society, TMS 2019

Y2 - 10 March 2019 through 14 March 2019

ER -

Metallurgical Characteristics of Laser Peened 17-4 PH SS Processed by LENS Technique

Abstract

Publication series

Conference

UN SDGs

Keywords

ASJC Scopus subject areas

Access to Document

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