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Materiale Plastice
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https://doi.org/10.37358/Mat.Plast.1964

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Materiale Plastice (Mater. Plast.), Year 2018, Volume 55, Issue 3, 454-459

https://doi.org/10.37358/MP.18.3.5050

Dan Gheorghe, M. Schwartz, Ion Ciuca, Robert Ciocoiu

A Comparative Microstructure Evolution of AISI H21 and Inconel 718 in Cyclic Heating


Abstract:
The AISI H21 steel used for dies in copper hot extrusion softened only after several runs. To improve production parameters a new material was necessary for the die, and, as a first choice, Inconel 718 was preferred. Prior to adopting this material for new extrusion dies an experimental program with temperature exposure cycles was performed so as to study microstructure evolution within AISI H21 and Inconel 718. The samples were studied by optic and scanning electron microscopy (SEM) and were also submitted to X-ray diffraction (XRD) and microhardness tests. The results showed carbide coalescence, which led to softening, followed by a re-precipitation in the steel, while, in Inconel 718, the precipitation (in small amounts) of delta (รค) phase was observed.Using these results and combining them with practical experience with steel, we could predict that the Inconel 718 die performance is such that at least a double quantity of copper could be extruded per die.


Keywords:
AISI H21; Inconel 718; extrusion die; dphase; carbide coalescence

Issue: 2018 Volume 55, Issue 3
Pages: 454-459
Publication date: 2018/9/30
https://doi.org/10.37358/MP.18.3.5050
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Creative Commons License
This article is published under the Creative Commons Attribution 4.0 International License
Citation Styles
Cite this article as:
GHEORGHE, D., SCHWARTZ, M., CIUCA, I., CIOCOIU, R., A Comparative Microstructure Evolution of AISI H21 and Inconel 718 in Cyclic Heating, Mater. Plast., 55(3), 2018, 454-459.

Vancouver
Gheorghe D, Schwartz M, Ciuca I, Ciocoiu R. A Comparative Microstructure Evolution of AISI H21 and Inconel 718 in Cyclic Heating. Mater. Plast.[internet]. 2018 Jul;55(3):454-459. Available from: https://doi.org/10.37358/MP.18.3.5050


APA 6th edition
Gheorghe, D., Schwartz, M., Ciuca, I. & Ciocoiu, R. (2018). A Comparative Microstructure Evolution of AISI H21 and Inconel 718 in Cyclic Heating. Materiale Plastice, 55(3), 454-459. https://doi.org/10.37358/MP.18.3.5050


Harvard
Gheorghe, D., Schwartz, M., Ciuca, I., Ciocoiu, R. (2018). 'A Comparative Microstructure Evolution of AISI H21 and Inconel 718 in Cyclic Heating', Materiale Plastice, 55(3), pp. 454-459. https://doi.org/10.37358/MP.18.3.5050


IEEE
D. Gheorghe, M. Schwartz, I. Ciuca, R. Ciocoiu, "A Comparative Microstructure Evolution of AISI H21 and Inconel 718 in Cyclic Heating". Materiale Plastice, vol. 55, no. 3, pp. 454-459, 2018. [online]. https://doi.org/10.37358/MP.18.3.5050


Text
Dan Gheorghe, M. Schwartz, Ion Ciuca, Robert Ciocoiu,
A Comparative Microstructure Evolution of AISI H21 and Inconel 718 in Cyclic Heating,
Materiale Plastice,
Volume 55, Issue 3,
2018,
Pages 454-459,
ISSN 2668-8220,
https://doi.org/10.37358/MP.18.3.5050.
(https://revmaterialeplastice.ro/Articlegs.asp?ID=5050)
Keywords: AISI H21; Inconel 718; extrusion die; dphase; carbide coalescence


RIS
TY - JOUR
T1 - A Comparative Microstructure Evolution of AISI H21 and Inconel 718 in Cyclic Heating
A1 - Gheorghe, Dan
A2 - Schwartz, M.
A3 - Ciuca, Ion
A4 - Ciocoiu, Robert
JF - Materiale Plastice
JO - Mater. Plast.
PB - Materiale Plastice SRL
SN - 2668-8220
Y1 - 2018
VL - 55
IS - 3
SP - 454
EP - 459
UR - https://doi.org/10.37358/MP.18.3.5050
KW - AISI H21
KW - Inconel 718
KW - extrusion die
KW - dphase
KW - carbide coalescence
ER -


BibTex
@article{MatPlast2018P454,
author = {Gheorghe Dan and Schwartz M. and Ciuca Ion and Ciocoiu Robert},
title = {A Comparative Microstructure Evolution of AISI H21 and Inconel 718 in Cyclic Heating},
journal = {Materiale Plastice},
volume = {55},
number = {3},
pages = {454-459},
year = {2018},
issn = {2668-8220},
doi = {https://doi.org/10.37358/MP.18.3.5050},
url = {https://revmaterialeplastice.ro/Articlegs.asp?ID=5050}
}
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