Hostname: page-component-848d4c4894-xm8r8 Total loading time: 0 Render date: 2024-07-02T18:43:04.208Z Has data issue: false hasContentIssue false
  • English
  • Français

Effect of in-situ heat treatment and process parameters on the laser-deposited IN718 microstructure and mechanical properties

Published online by Cambridge University Press:  20 April 2020

BN Masina ,
S Skhosane ,
S Hoosain  and
M Tlotleng Open the ORCID record for M Tlotleng [Opens in a new window]
BN Masina*
Affiliation:
Council for Scientific and Industrial Research, National Laser Centre, PO BOX 395, Pretoria, 0001, South Africa.
S Skhosane
Affiliation:
Council for Scientific and Industrial Research, National Laser Centre, PO BOX 395, Pretoria, 0001, South Africa.
S Hoosain
Affiliation:
Council for Scientific and Industrial Research, National Laser Centre, PO BOX 395, Pretoria, 0001, South Africa.
M Tlotleng
Affiliation:
Council for Scientific and Industrial Research, National Laser Centre, PO BOX 395, Pretoria, 0001, South Africa. University of Johannesburg, Faculty of Engineering and Built Environment, Auckland Park Campus, Johannesburg, 2012, South Africa.
*
*(Email: [email protected])
Get access

Abstract

The direct laser-deposited Inconel 718 (IN718) specimens were produced using 1073 nm, high power continuous wave (CW), IPG Ytterbium fibre laser and in-situ heat treatment. The laser power and in-situ heat treatment temperature were fixed while varying the laser scanning speed from 0.83 to 2.50 cm/s. The microstructure and micro-hardness of the IN718 specimens were characterized using an optical microscope (OM), scanning electron microscopy (SEM) equipped with an energy-dispersive X-ray spectroscopy (EDS or EDX) and Vickers system. The microstructure of the specimens consists of γ-matrix as the primary phase, Nb-rich particles, constitutional liquation cave, liquation cracking and ductility-dip cracks. It was found that the micro-hardness profile of the IN718 specimens was gradually increased with the increase of the distance from the surface.

Keywords

additive manufacturingalloyhardnessNbdefects
Type
Articles
Information
MRS Advances , Volume 5 , Issue 23-24: African Materials Research Society 2019 , 2020 , pp. 1245 - 1257
Check for updates
Copyright
Copyright © Materials Research Society 2020

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

References:

Reed, RC, The superalloy fundamental and applications, Cambridge University Press, Cambrige, 2006.CrossRefGoogle Scholar
Lambarri, J, Leunda, J, Garcia Navas, V, Soriano, C, Sanz, C, Microstructural and tensile characterization of Inconel 718 laser coatings for aeronautic components, Opt. Laser Eng. 51 (2013) 813–821.CrossRefGoogle Scholar
Wang, Z, Guan, K, Gao, M, Li, X, Chen, X, Zeng, X, The microstructure and mechanical properties of deposited-IN718 by selective laser melting, J. Alloys Compd. 513 (2012) 518–523.CrossRefGoogle Scholar
Ding, RG, Haung, ZW, Li, HY, Mitchell, I, Baxter, G, Bowen, P, Electron microscopy study of direct laser deposition IN718, Mater. Charact. 106 (2015) 324–337.CrossRefGoogle Scholar
Idowu, OA, Ojo, OA, Chaturvedi, MC, Effect of heat input on heat affected zone cracking in laser welded ATI Allvac 718Plus superalloy, Mater. Sci. Eng. A 454-455 (2007) 389–397.CrossRefGoogle Scholar
Liu, FC, Lin, X, Leng, H, Cao, J, Liu, Q, Huang, CP, Huang, WD, Microstructural changes in a laser forming Inconel 718 superalloy thin wall in the deposition direction, J. Optics and Laser Techn. 45 (2013) 330–335.CrossRefGoogle Scholar
Lambarri, J, Leunda, J, Navas, VG, Soriano, C, Sanz, C, Microstructural and tensile characterization of Inconel 718 laser coatings for aeronautic components, J. Optics and Lasers in Eng. 51 (2013) 813–821.CrossRefGoogle Scholar
Chen, Y, Zhang, K, Haung, J, Hosseini, SRE, Z LI, , Characterization of heat affected zone liquation cracking in laser additive manufacturing of Inconel 718, Mater. Des. 90 (2016) 586–594.CrossRefGoogle Scholar
Antonsson, T, Fredriksson, H, The effect of cooling rate on the solidification on Inconel 718, Metall. Mater. Trans, 36 (2005) 85–96.Google Scholar
Kuo, YL, Nagahari, T, Kakehi, K, The effect of post-processes on the microstructure and creep properties of alloy718 built up by selective laser melting, Mater. 11 (2018) 996-1 –; 996–13.CrossRefGoogle Scholar
Chen, Y, Lu, F, Zhang, K, Nie, P, Hosseini, SRE, Feng, K, Li, Z, Chu, PK, Investigation of dendritic growth and liquation cracking in laser melting deposited Inconel 718 at different laser input angles, Mater. Des. 105 (2016) 133–141.CrossRefGoogle Scholar
Qi, H, Azer, M, Ritter, A, Studies of standard heat treatment effects on microstructure and mechanical properties of laser net shape manufactured Inconel 718, Metall. Mater. Trans. A 40 (2009) 2410–2422.CrossRefGoogle Scholar
Amato, KN, Gaytan, SM, Murr, LE, Martinez, E, Shindo, PW, Hernandez, J, Collions, S, Medina, F, Microstructures and mechanical behaviour of Inconel 718 fabricated by selective laser melting, Acta Mater. 60 (2012) 2229–2239.CrossRefGoogle Scholar
Kuo, YL, Horikawa, S, Kakehi, K, Effects of build direction and heat treatment on creep properties of Ni-base superalloy built up by additive manufacturing, Scr. Mater. 129 (2017) 74–78.CrossRefGoogle Scholar
Amato, KN, Gaytan, SM, Murr, LE, Martinez, E, Shindo, PW, Hernandez, J, Collins, S, Medina, F, Microstructures and mechanical behaviour of Inconel 718 fabricated by selective laser melting, Acta Mater. 60 (2012) 2229–2239.CrossRefGoogle Scholar
Feng, K, Liu, P, Li, H, Sun, S, Xu, S, Li, J, Microstructure and phase transformation on the surface of Inconel 718 alloys fabricated by SLM under 1050°C solid solution+double ageing, Vacuum 145 (2017) 112–115.CrossRefGoogle Scholar
Masina, BN, Lengopeng, T, Pityana, SL, Tlotleng, M, Microstructure and mechanical characterisation of TiAl coated on Ti64, SAJIE 28 (2017) 172–177.CrossRefGoogle Scholar
Zhang, H, Selective laser melting of high strength Al-Cu-Mg: Processing, microstructure and mechanical properties, Mater. Sc. And Eng. A 656 (2016) 47–54.CrossRefGoogle Scholar
Mostafa, A, Rubio, IP, Brailovski, V, Jahazi, M, Medraj, M, Structure, texture and phases in 3D printed IN718 alloy subjected to homogenization and HIP treatments, Met. 7 (2017) 196-1 –; 196–23.Google Scholar
Chauvet, E, Kontis, P, Jagle, EA, Gault, B, Raabe, D, Tassin, C, Blandin, J, Dendievel, R, Vayre, B, Abed, S, Martin, G, Hot cracking mechanism affecting a non-weldable Ni-based superalloy produced by selective electron beam melting, Acta Mater. 142 (2018) 82–94.CrossRefGoogle Scholar
Zhang, X, Chen, H, Xu, L, Xu, J, Ren, X, Chen, X, Cracking mechanism and susceptibility of laser melting deposited Inconel 738 superalloy, Mater. and Design 183 (2019) 108105-1 108105–14.CrossRefGoogle Scholar
Ye, X, Hau, X, Wang, M, Lou, S, Controlling hot cracking in Ni-based Inconel-718 superalloy cast sheets during tungsten inert gas welding, J Mater. Proc. Techn. 222 (2015) 381–390.CrossRefGoogle Scholar
Oshobe, OE, Fiber laser welding of Nickel-containing superalloy Inconel 718, Ph.D. Thesis, University of Manitoba, Winnipeg, MB, Canada, (2012).Google Scholar
Alvarez, P, Vazquez, L, Ruiz, N, Rodriguez, P, Magana, A, Niklas, A, Santos, F, Comparison of hot cracking susceptibility of TIG and laser beam welded alloy 718 by varestraint testing, Metals 9(9) (2019) 985-1-985-12.CrossRefGoogle Scholar
Mostafa, A, Rubio, IP, Brailovski, V, Jahazi, M, Medraj, M, Structure, texture and phases in 3D printed IN718 alloy subjected to homogenization and HIP treatments, Metals 7 (2017) 196–1-196-23.CrossRefGoogle Scholar
Sui, S, Tan, H, Chen, J, Zhong, C, Li, Z, Fan, W, Gasser, A, Huang, W, The influence of laser phases on the room temperature tensile properties of Inconel 718 fabricated by powder feeding laser additive manufacturing, Acta Mater. 164 (2019) 413–427.CrossRefGoogle Scholar
Tcho, WM, Cuvillier, P, Sjolyst-Kvernelang, A, Hansen, V, Microstructure and hardness studies of Inconel 718 manufactured by selective melting before and after solution heat treatment, Mater. Sci. Eng. 689 (2017) 220–232.CrossRefGoogle Scholar