Study of monotonic and cyclic mechanical behavior and microstructural evolution at a high temperature of ASTM A297 HP steel modified with niobium (2021)
- Authors:
- USP affiliated authors: RUCHERT, CASSIUS OLIVIO FIGUEIREDO TERRA - EEL ; ARAUJO, MARCOS VINICIUS PEREIRA DE - EESC ; CARVALHO, MARCIO CORRÊA DE - EEL
- Unidades: EEL; EESC
- DOI: 10.1016/j.engfailanal.2021.105393
- Subjects: FADIGA DAS ESTRUTURAS; RECRISTALIZAÇÃO; ALTA TEMPERATURA
- Keywords: Fatigue; Relaxation; Dynamic recovery; Recrystallization; High-temperature
- Language: Inglês
- Abstract: The present work studies the effects of niobium on the mechanical properties and the elastoplastic/viscoelastic behavior at 927 °C of ASTM A297 grade, HP cast stainless steel in the as-cast material, to simulate the actual work condition. Tensile tests were carried out at different temperatures, differential scanning calorimetry (DSC), relaxation tests, the fatigue of continuous cycles under the triangular waveform, and fatigue with a trapezoidal waveform of the type “Dwell” with dwell times of 120 and 300 s as specified in the E2714-13 standard and hot torsion tests, to analyze the variations in the mechanical properties. The results of the mechanical tests and studies of the microstructural evolution, as well as of its later analyzes, provided data, not only in the form of data sheet's for the application of the values obtained in projects but concurrently after comparing property and microstructure, to deepen the phenomenology of mechanical stress behavior versus monotonic and cyclic deformation, high-temperature deformation mechanisms, dynamic recovery, of the type of microstructure resulting after the tests and also of the fracture mechanisms associated with the types of mechanical stresses imposed on the material, obtained by through the mechanical tests mentioned above. The high-temperature fatigue tests showed expected stress versus strain behavior, where cycles without dwell times showed lower hysteresis area values, from where the energy consumed in a strain cycle is calculated. The increase in the consumed energy values is due to the insertion of the dwell times, but it is important to note that for the tests that contain dwell times of 120 s and 300 s they did not show significant differences between the consumed energy, showing a saturation effect of tension that does not promote more significant inelastic strains.The cyclic mechanical fatigue stresses with dwell times and the low deformation rate led to intense precipitation of secondary carbides Cr23C6 chromium alloys added to the intrinsic properties of stainless steel dislocation slip were factors that resulted in the dynamic recovery phenomenon. Fractographic analyzes performed on monotonically fractured specimens and specimens after fatigue tests revealed that the material is prone to fracture in intergranular regions.
- Imprenta:
- Publisher: Elsevier
- Publisher place: São Paulo-SP
- Date published: 2021
- Source:
- Título: Engineering failure analysis
- ISSN: 1350-6307
- Volume/Número/Paginação/Ano: v.125, p.1-29, art.n.105393, 2021
- Este periódico é de assinatura
- Este artigo NÃO é de acesso aberto
- Cor do Acesso Aberto: closed
-
ABNT
ARAÚJO, Marcos Vinícius Pereira de e CARVALHO, Márcio Correa de e RUCHERT, Cassius Olívio Figueiredo Terra. Study of monotonic and cyclic mechanical behavior and microstructural evolution at a high temperature of ASTM A297 HP steel modified with niobium. Engineering failure analysis, v. 125, n. art.105393, p. 1-29, 2021Tradução . . Disponível em: https://doi.org/10.1016/j.engfailanal.2021.105393. Acesso em: 11 jan. 2026. -
APA
Araújo, M. V. P. de, Carvalho, M. C. de, & Ruchert, C. O. F. T. (2021). Study of monotonic and cyclic mechanical behavior and microstructural evolution at a high temperature of ASTM A297 HP steel modified with niobium. Engineering failure analysis, 125( art.105393), 1-29. doi:10.1016/j.engfailanal.2021.105393 -
NLM
Araújo MVP de, Carvalho MC de, Ruchert COFT. Study of monotonic and cyclic mechanical behavior and microstructural evolution at a high temperature of ASTM A297 HP steel modified with niobium [Internet]. Engineering failure analysis. 2021 ;125( art.105393): 1-29.[citado 2026 jan. 11 ] Available from: https://doi.org/10.1016/j.engfailanal.2021.105393 -
Vancouver
Araújo MVP de, Carvalho MC de, Ruchert COFT. Study of monotonic and cyclic mechanical behavior and microstructural evolution at a high temperature of ASTM A297 HP steel modified with niobium [Internet]. Engineering failure analysis. 2021 ;125( art.105393): 1-29.[citado 2026 jan. 11 ] Available from: https://doi.org/10.1016/j.engfailanal.2021.105393 - Estudo do comportamento mecânico monotônico, cíclico e da evolução microestrutural em alta temperatura do aço ASTM A297 HP modificado com nióbio
- Influência da soldagem no comportamento mecânico de tração a quente e fluência da liga G-NiCr28W - MA
- Fatigue crack growth behavior and fatigue limit determination using the staircase method for ultra high strength 300M steel
- Modelamento do fechamento da trinca por fadiga em carregamento de amplitude variável via método dos elementos finitos
- Estudo do processo de dobramento a frio de grampo para feixes de mola
- Fatigue crack propagation in aluminum alloy 2050: numerical analysis of acceleration and retardation
- Microstructural characterization of FSW aluminum-lithium alloy AA2198-T851
- Microstructural characterization and mechanical behavior at high temperature of the cast stainless steel G-NiCr28W-MA in the as cast and as welded conditions
- Estudo de trinca gerada no processo de dobramento a frio de grampo para feixes de mola
- Caracterização microestrutural da liga SAE AMS 7475 T7351
Informações sobre o DOI: 10.1016/j.engfailanal.2021.105393 (Fonte: oaDOI API)
How to cite
A citação é gerada automaticamente e pode não estar totalmente de acordo com as normas
