Through Process Modelling

Hirsch, Jürgen

doi:10.4028/www.scientific.net/msf.519-521.15

Cited by 15 publications

(7 citation statements)

References 11 publications

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“…In the automotive industry, for example, they are used as outer skin alloys, for non-decorative inner parts, and structural or crash components with individual property criteria [1][2][3][4][5]. Yet, the ever-growing demand to increase formability and strength for more complex parts of lower weight drives the alloy development considerably [4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Design strategy for controlled natural aging in Al–Mg–Si alloys

Werinos

Antrekowitsch

Ebner³

et al. 2016

Acta Materialia

112

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This study presents a design strategy for Al-Mg-Si alloys to control natural aging. Recently, trace addition of Sn was shown to suppress natural aging for up to two weeks, which was explained by the strong trapping of vacancies to Sn atoms. Here we explore the effect of Keywords: aluminum alloys, natural aging, phase transformation kinetics, vacancies, trace elements This is a pre-print of the following article: Werinos, M.; Antrekowitsch, H.; Ebner, T.; Prillhofer, R.; Curtin, W. A.; Uggowitzer, P. J.; Pogatscher, S. Acta Mater. 2016, 118, 296-305.. The formal publication is available at http://dx

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Section: Introductionmentioning

confidence: 99%

Design strategy for controlled natural aging in Al–Mg–Si alloys

Werinos

Antrekowitsch

Ebner³

et al. 2016

Acta Materialia

112

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“…Pronounced texture components were not observed in the as-cast state of the 5182 alloy (Figure 20a). This picture is typical for most aluminum alloys in the as-cast state [43,44] if no special casting methods are used. With the increased strain ratio to 32.2%, deformation textures, represented mainly by the rolling (β-fiber) texture components, i.e., "Cu" (copper), "Bs" (brass), as well as transitional texture B/S, appeared [45] (Figure 20b).…”

Section: Component Miller Indices {Hkl} Uvwmentioning

confidence: 91%

Investigation of the Intermetallic Compounds Fragmentation Impact on the Formation of Texture during the as Cast Structure Thermomechanical Treatment of Aluminum Alloys

Aryshenskii

Hirsch

Konovalov

2021

Metals

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In this work, the influence of the intermetallic particle fragmentation during hot rolling of the as cast structure on the evolution of textures in aluminum alloys 8011, 5182 and 1565 was investigated. For this purpose, laboratory multi-pass rolling of the cast material was carried out. At various degrees of hot rolling deformation, the process was stopped, and the metal was quenched and sent for optical and electron microscopy to investigate the large intermetallic particles. In addition, the grain structure was studied and an X-ray analysis was carried out in order to determine the main texture components. Some of the samples were held at a temperature above the recrystallization threshold and then cooled in air; the grain structure and texture composition were also studied. In addition, the simulation of the texture evolution was carried out under various modes of rolling of aluminum alloys, taking into account the process of fragmentation of intermetallic particles. The investigation showed that intermetallic compounds with a deformation degree of 1.8, on average, decrease the particle size by 5–7 times. The large eutectic particles remaining after homogenization are drawn out in the direction of deformation and are crushed, increasing their number accordingly. Therefore, the most favorable stage for the formation of recrystallization nuclei on particles is the moment when they are already numerous and their sizes are much larger than subgrains. Simulation of hot rolling of the investigated alloys showed that considering the factor of fragmentation of intermetallic particles during hot deformation of the as-cast structure significantly increases the accuracy of the results.

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“…The idea of integrating the processing and structure of materials with the target goals and properties is not new. The concept of an Integrated Computational Materials Engineering (ICME) approach, whereby computational tools are utilized to achieve this goal of integration, is newer and has been introduced by Olson, 1,2 and has also been known as through process modeling 3 . The concept behind ICME is to use a systematic approach to facilitate the cycle between commercial design and production, with a linear hierarchical relationship among processing, structure, properties, and performance, as shown in Figure 1 1 .…”

Section: Introductionmentioning

confidence: 99%

Damage prediction of sintered α‐SiC using thermo‐mechanical coupled fracture model

Sun,

Chen,

Marziale

et al. 2023

J Am Ceram Soc.

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A three-way coupled thermo-mechanical fracture model is presented to predict the damage of brittle ceramics, in particular 𝛼-SiC, over a wide range of temperatures (20-1400 • C). Predicting damage over such a range of temperatures is crucial for thermal protection systems for many systems such as spacecraft. The model, which has been implemented in MOOSE, is divided into three modules: elasticity, damage phase field, and heat conduction. Analytical approaches for determining crack lengthscales are presented for both simple tension and simple shear. Validation tests are conducted for both flexural strength and fracture toughness over the specified range of temperatures. Flexural strength simulation results fall within the uncertainty region of the experimental data, and mode I fracture toughness simulation results are also in agreement with the experimental data. Mode II and mixed mode fracture toughness simulations results are presented with the modified G-criterion. Finally, the parallel computing capabilities of the model are considered in various scalability tests.

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Through Process Modelling

Cited by 15 publications

References 11 publications

Design strategy for controlled natural aging in Al–Mg–Si alloys

Design strategy for controlled natural aging in Al–Mg–Si alloys

Investigation of the Intermetallic Compounds Fragmentation Impact on the Formation of Texture during the as Cast Structure Thermomechanical Treatment of Aluminum Alloys

Damage prediction of sintered α‐SiC using thermo‐mechanical coupled fracture model

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