Strain-Rate Effects on the Recrystallization of Molybdenum-Based MZ17 Alloy (2022)
- Authors:
- Autor USP: SANDIM, HUGO RICARDO ZSCHOMMLER - EEL
- Unidade: EEL
- Subjects: REFRATÁRIOS; MOLIBDÊNIO
- Agências de fomento:
- Language: Inglês
- Abstract: Warm pressing was performed on samples of the Mo-based alloy MZ-17 (Mo-1.7%ZrO2) to about 60% reduction in height at 1000 and 1100oC to investigate the effects of strain rate and deformation temperature on recrystallization. Warm deformation was performed using a deformation dilatometer in cylindrical specimens at varying strain rates (10-1-10 s-1) followed by fast cooling. Single-peak stress-strain curves can be noticed for all testing conditions. As-pressed microstructures were imaged at the center of the samples where plastic flow is more uniform using electron backscatter diffraction (EBSD) to distinguish recovered and recrystallized grains and electron channeling contrast imaging (ECCI) to visualize the dislocation structures. In all tested temperatures and strain rates, recrystallization was only partial with increasing volume fraction with deformation temperature. Important orientation effects on recrystallization behavior can be noticed because of the coarse-grained starting microstructure. There is microstructural evidence of three diffusion-controlled restoration mechanisms acting during warm deformation; i.e., dynamic recovery, (meta)dynamic recrystallization and particle stimulated nucleation (PSN) of recrystallization.
- Imprenta:
- Publisher: Plansee Group Functions Austria GmbH
- Date published: 2022
- Source:
- Título: 20th Plansee Seminar 2022 - Proceedings
- Volume/Número/Paginação/Ano: p.1-11, 2022
-
ABNT
SOUZA FILHO, Isnaldi Rodrigues de et al. Strain-Rate Effects on the Recrystallization of Molybdenum-Based MZ17 Alloy. 20th Plansee Seminar 2022 - Proceedings. [S.l.]: Plansee Group Functions Austria GmbH. . Acesso em: 28 dez. 2025. , 2022 -
APA
Souza Filho, I. R. de, Knabl, W., Kestler, H., & Sandim, H. R. Z. (2022). Strain-Rate Effects on the Recrystallization of Molybdenum-Based MZ17 Alloy. 20th Plansee Seminar 2022 - Proceedings. Plansee Group Functions Austria GmbH. -
NLM
Souza Filho IR de, Knabl W, Kestler H, Sandim HRZ. Strain-Rate Effects on the Recrystallization of Molybdenum-Based MZ17 Alloy. 20th Plansee Seminar 2022 - Proceedings. 2022 ;1-11.[citado 2025 dez. 28 ] -
Vancouver
Souza Filho IR de, Knabl W, Kestler H, Sandim HRZ. Strain-Rate Effects on the Recrystallization of Molybdenum-Based MZ17 Alloy. 20th Plansee Seminar 2022 - Proceedings. 2022 ;1-11.[citado 2025 dez. 28 ] - Recrystallization kinetics, mechanisms, and topology in alloys processed by laser powder-bed fusion: AISI 316L stainless steel as example
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