Tensile and Creep Testing of Sanicro 25 Using Miniature Specimens

Dymáček, Petr; Jarý, Milan; Dobeš, F.; Kloc, L.

doi:10.3390/ma11010142

Cited by 26 publications

(16 citation statements)

References 27 publications

(49 reference statements)

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“…Unfortunately, no detailed analysis seems to have been performed for austenitic stainless steels. Published creep curves for Sanicro 25 [25] show the same tertiary behavior as for cold worked copper, indicating that enhanced recovery is the main mechanism. In addition, the strain during primary creep is quite small.…”

Section: Solid Solution Hardeningmentioning

confidence: 70%

“…In our model, ε crit represents the strain in the secondary stage. The total experimental rupture strains are about 40-50% at higher stresses [2,25], and these are clear values for ductile rupture. Considering a significant part from tertiary creep, ε crit has been taken as 0.2 in the model.…”

Section: Solid Solution Hardeningmentioning

confidence: 99%

Section: Experimental Data Sourcesmentioning

confidence: 99%

“…Experimental creep rupture data for Sanicro 25 was extracted from [2,5,25]. Experimental data for dimensions of precipitates was from [2,5,25] where particle radius and number density had been characterized. During the MatCalc calculation and the modeling process, the grain size was taken as 25 µm, which is consistent with metallography observations [25].…”

Section: Experimental Data Sourcesmentioning

confidence: 99%

“…Experimental data for dimensions of precipitates was from [2,5,25] where particle radius and number density had been characterized. During the MatCalc calculation and the modeling process, the grain size was taken as 25 µm, which is consistent with metallography observations [25]. In the MatCalc simulation, the chemical composition was set according to Table 1.…”

Section: Experimental Data Sourcesmentioning

confidence: 99%

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Application of Fundamental Models for Creep Rupture Prediction of Sanicro 25 (23Cr25NiWCoCu)

Sandström

2019

Crystals

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Creep rupture prediction is always a critical matter for materials serving at high temperatures and stresses for a long time. Empirical models are frequently used to describe creep rupture, but the parameters of the empirical models do not have any physical meanings, and the model cannot reveal the controlling mechanisms during creep rupture. Fundamental models have been proposed where no fitting parameters are involved. Both for ductile and brittle creep rupture, fundamental creep models have been used for the austenitic stainless steel Sanicro 25 (23Cr25NiWCoCu). For ductile creep rupture, the dislocation contribution, solid solution hardening, precipitation hardening, and splitting of dislocations were considered. For brittle creep rupture, creep cavitation models were used taking grain boundary sliding, formation, and growth of creep cavities into account. All parameters in the models have been well defined and no fitting is involved. MatCalc was used for the calculation of the evolution of precipitates. Some physical parameters were obtained with first-principles methods. By combining the ductile and brittle creep rupture models, the final creep rupture prediction was made for Sanicro 25. The modeling results can predict the experiments at long-term creep exposure times in a reasonable way.

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Section: Solid Solution Hardeningmentioning

confidence: 70%

Section: Solid Solution Hardeningmentioning

confidence: 99%

Section: Experimental Data Sourcesmentioning

confidence: 99%

Section: Experimental Data Sourcesmentioning

confidence: 99%

Section: Experimental Data Sourcesmentioning

confidence: 99%

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Application of Fundamental Models for Creep Rupture Prediction of Sanicro 25 (23Cr25NiWCoCu)

Sandström

2019

Crystals

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The Cold Angular Rolling Process of Copper Sheets: Unraveling Plastic Deformation Behavior and Unveiling Microstructural Transformations

Lee,

Bhatta,

et al. 2023

Adv Eng Mater

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The cold angular rolling process (CARP) is being developed as a continuous severe plastic deformation (SPD) technique, which can process metal sheets without any length limitations at room temperature. CARP contains cold rolling and equal‐channel angular process components. The sheet thickness is kept consistent before and after CARP, allowing multiple passes of the sheet. The desired microstructure and mechanical properties can be achieved in the processed metallic sheets. The current study is aimed to evaluate the capability of CARP by processing copper sheets with different sheet widths for repetitive passes. The CARP‐treated sheets are examined by lab‐scale X‐ray and high‐energy synchrotron X‐ray diffraction to investigate the evolution in dislocation density, texture, and strain anisotropy, and by tensile testing to identify the bulk mechanical properties. The digital image correlation (DIC) method is applied to tensile testing so that strain localization within the sample gauge was visualized and deformation behavior was evaluated after yielding till post‐necking by estimating the hardening exponent and strain hardening rate of the CARP‐treated sheet. Comparing the reported continuous and multiple‐step processes on Cu and its alloys, the present study confirms CARP is potentially a useful sheet process for strengthening ductile metals.This article is protected by copyright. All rights reserved.

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A review of selected small specimen test techniques for identifying deformation and failure properties of metallic materials

et al. 2022

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Tensile and Creep Testing of Sanicro 25 Using Miniature Specimens

Cited by 26 publications

References 27 publications

Application of Fundamental Models for Creep Rupture Prediction of Sanicro 25 (23Cr25NiWCoCu)

Application of Fundamental Models for Creep Rupture Prediction of Sanicro 25 (23Cr25NiWCoCu)

The Cold Angular Rolling Process of Copper Sheets: Unraveling Plastic Deformation Behavior and Unveiling Microstructural Transformations

A review of selected small specimen test techniques for identifying deformation and failure properties of metallic materials

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