Direct laser deposition of crack-free CM247LC thin walls: mechanical properties and microstructural effects of heat treatment

Abdullah Alhuzaim; Stano Imbrogno; Moataz M. Attallah

doi:10.1016/j.matdes.2021.110123

Direct laser deposition of crack-free CM247LC thin walls: mechanical properties and microstructural effects of heat treatment

Abdullah Alhuzaim, Stano Imbrogno, Moataz M. Attallah^*

^*Corresponding author for this work

Metallurgy and Materials

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

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Abstract

CM247LC is classified as a non-weldable Ni alloy due to the high Ti + Al content, which makes it susceptible to cracking. It is particularly prone to microcracking when processed by direct laser deposition (DLD). In this work, multiple single walls were manufactured by DLD in CM247LC using two different laser modes: continuous wave and pulse wave (PW). The manufactured walls were studied during processing and post-processing, and characterised by scanning electron microscopy, electron backscattered diffraction, thermal analysis and X-ray diffraction. The results indicate that crack-free conditions during the deposition process and the subsequent thermal processing can be achieved using the PW laser mode and that this can also lead to outstanding mechanical properties.

Original language	English
Article number	110123
Journal	Materials and Design
Volume	211
Early online date	24 Sept 2021
DOIs	https://doi.org/10.1016/j.matdes.2021.110123
Publication status	Published - 1 Dec 2021

Bibliographical note

Funding Information:
AA would like to acknowledge the funding by the Royal Commission for Jubail and Yanbu (Kingdom of Saudi Arabia) for funding his Ph.D. project. The authors would like to acknowledge the Horizon 2020 research and innovation programme 4DHYBRID “Novel ALL-IN-ONE machines, robots, and systems for affordable, worldwide and lifetime Distributed 3D hybrid manufacturing and repair operations” (Project ID: 723795).

Keywords

Nickel Superalloy
CM247LC
Direct Laser Deposition
Microstructure
Mechanical properties

ASJC Scopus subject areas

Materials Science(all)
Mechanics of Materials
Mechanical Engineering

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10.1016/j.matdes.2021.110123Licence: Creative Commons: Attribution-NonCommercial-NoDerivs (CC BY-NC-ND)

AlhuzaimA2021DirectFinal published version, 6.79 MBLicence: Creative Commons: Attribution-NonCommercial-NoDerivs (CC BY-NC-ND)

Cite this

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title = "Direct laser deposition of crack-free CM247LC thin walls: mechanical properties and microstructural effects of heat treatment",

abstract = "CM247LC is classified as a non-weldable Ni alloy due to the high Ti + Al content, which makes it susceptible to cracking. It is particularly prone to microcracking when processed by direct laser deposition (DLD). In this work, multiple single walls were manufactured by DLD in CM247LC using two different laser modes: continuous wave and pulse wave (PW). The manufactured walls were studied during processing and post-processing, and characterised by scanning electron microscopy, electron backscattered diffraction, thermal analysis and X-ray diffraction. The results indicate that crack-free conditions during the deposition process and the subsequent thermal processing can be achieved using the PW laser mode and that this can also lead to outstanding mechanical properties.",

keywords = "Nickel Superalloy, CM247LC, Direct Laser Deposition, Microstructure, Mechanical properties",

author = "Abdullah Alhuzaim and Stano Imbrogno and Attallah, {Moataz M.}",

note = "Funding Information: AA would like to acknowledge the funding by the Royal Commission for Jubail and Yanbu (Kingdom of Saudi Arabia) for funding his Ph.D. project. The authors would like to acknowledge the Horizon 2020 research and innovation programme 4DHYBRID “Novel ALL-IN-ONE machines, robots, and systems for affordable, worldwide and lifetime Distributed 3D hybrid manufacturing and repair operations” (Project ID: 723795).",

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doi = "10.1016/j.matdes.2021.110123",

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T2 - mechanical properties and microstructural effects of heat treatment

AU - Alhuzaim, Abdullah

AU - Imbrogno, Stano

AU - Attallah, Moataz M.

N1 - Funding Information: AA would like to acknowledge the funding by the Royal Commission for Jubail and Yanbu (Kingdom of Saudi Arabia) for funding his Ph.D. project. The authors would like to acknowledge the Horizon 2020 research and innovation programme 4DHYBRID “Novel ALL-IN-ONE machines, robots, and systems for affordable, worldwide and lifetime Distributed 3D hybrid manufacturing and repair operations” (Project ID: 723795).

PY - 2021/12/1

Y1 - 2021/12/1

N2 - CM247LC is classified as a non-weldable Ni alloy due to the high Ti + Al content, which makes it susceptible to cracking. It is particularly prone to microcracking when processed by direct laser deposition (DLD). In this work, multiple single walls were manufactured by DLD in CM247LC using two different laser modes: continuous wave and pulse wave (PW). The manufactured walls were studied during processing and post-processing, and characterised by scanning electron microscopy, electron backscattered diffraction, thermal analysis and X-ray diffraction. The results indicate that crack-free conditions during the deposition process and the subsequent thermal processing can be achieved using the PW laser mode and that this can also lead to outstanding mechanical properties.

AB - CM247LC is classified as a non-weldable Ni alloy due to the high Ti + Al content, which makes it susceptible to cracking. It is particularly prone to microcracking when processed by direct laser deposition (DLD). In this work, multiple single walls were manufactured by DLD in CM247LC using two different laser modes: continuous wave and pulse wave (PW). The manufactured walls were studied during processing and post-processing, and characterised by scanning electron microscopy, electron backscattered diffraction, thermal analysis and X-ray diffraction. The results indicate that crack-free conditions during the deposition process and the subsequent thermal processing can be achieved using the PW laser mode and that this can also lead to outstanding mechanical properties.

KW - Nickel Superalloy

KW - CM247LC

KW - Direct Laser Deposition

KW - Microstructure

KW - Mechanical properties

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VL - 211

JO - Materials and Design

JF - Materials and Design

M1 - 110123

ER -

Direct laser deposition of crack-free CM247LC thin walls: mechanical properties and microstructural effects of heat treatment

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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Cite this