Version 1
: Received: 18 September 2023 / Approved: 19 September 2023 / Online: 20 September 2023 (05:25:35 CEST)
Version 2
: Received: 15 October 2023 / Approved: 16 October 2023 / Online: 17 October 2023 (10:54:31 CEST)
How to cite:
Pop, M.; Sas-Boca, I.; Frunza, D.; Popa, F.; Neag, A. Aspects Regarding the Influence of Hot Deformation on the Mechanical and Structural Properties of 42CrMo4 Steel. Preprints2023, 2023091308. https://doi.org/10.20944/preprints202309.1308.v2
Pop, M.; Sas-Boca, I.; Frunza, D.; Popa, F.; Neag, A. Aspects Regarding the Influence of Hot Deformation on the Mechanical and Structural Properties of 42CrMo4 Steel. Preprints 2023, 2023091308. https://doi.org/10.20944/preprints202309.1308.v2
Pop, M.; Sas-Boca, I.; Frunza, D.; Popa, F.; Neag, A. Aspects Regarding the Influence of Hot Deformation on the Mechanical and Structural Properties of 42CrMo4 Steel. Preprints2023, 2023091308. https://doi.org/10.20944/preprints202309.1308.v2
APA Style
Pop, M., Sas-Boca, I., Frunza, D., Popa, F., & Neag, A. (2023). Aspects Regarding the Influence of Hot Deformation on the Mechanical and Structural Properties of 42CrMo4 Steel. Preprints. https://doi.org/10.20944/preprints202309.1308.v2
Chicago/Turabian Style
Pop, M., Florin Popa and Adriana Neag. 2023 "Aspects Regarding the Influence of Hot Deformation on the Mechanical and Structural Properties of 42CrMo4 Steel" Preprints. https://doi.org/10.20944/preprints202309.1308.v2
Abstract
The aim of the paper is to analyze the experimental results of the influence of elevated temperatures and strain rate on the mechanical and structural properties of steel 42CrMo4. The experiments were based on uniaxial tension and compression tests at high temperatures between 700 °C and 1000 °C and strain rates range 0.0018 - 0.1 s-1. The influence of temperature and strain rate on yield stress, strain to fracture, hardness, structural changes, and fracture characteristics were analyzed. Due to the dynamic recrystallization phenomenon present during the hot tensile tests, an increase in the flow stress is observed at the beginning of the deformation, after which it decreases until the fracture. By increasing the deformation temperature from 700 °C to 1000 °C, the tensile stress decreases significantly for all strain rates. The increase in the strain rate leads to the increase in the tensile stress. In compression tests by increasing the strain rate, the true strain is slightly increasing, but this depends on the temperature. The non-uniformity of deformations obtained at different values of the strain rate and temperature were also analyzed. Analysis by scanning electron microscopy showed the ductile behavior of the material. The degree of damage of the material caused by the presence of cavities increases by increasing the deformation temperature. For all the presented deformation conditions, the presence of the fracture through the ductile fracture mechanism was produced by the localized of necking and the coalescence of microvoids. By increasing the deformation temperature and reducing the strain rate, the fracture behavior of 42CrMo4 steel can be improved.
Engineering, Metallurgy and Metallurgical Engineering
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Received:
17 October 2023
Commenter:
Ioana Monica Sas-Boca
Commenter's Conflict of Interests:
Author
Comment:
We have added more information and data, and we have modified the co-authors component by adding two colleagues who participated in the creation of the article.
Commenter: Ioana Monica Sas-Boca
Commenter's Conflict of Interests: Author