Modeling of strain hardening and creep behaviour of 2024T3 aluminium alloy at room and high temperatures

Maximov, J. T.; Duncheva, G. V.; Anchev, A. P.; Ichkova, M.D.

doi:10.1016/j.commatsci.2013.11.057

Cited by 55 publications

(30 citation statements)

References 25 publications

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“…By increasing the stress respectively, the secondary creep strain increases and the rupture lifetime of the material decreases on increment of the stress. The pattern of the plotted creep curves shows similar results to those studied by [1,7,[14][15][16][17], which imitate the secondary creep regime. Moreover, the creep strain rate forms an approximately steady state as shown in Figure 6.…”

Section: Stress Dependence Analysissupporting

confidence: 71%

“…The isothermal creep method is established in order to describe the high-temperature creep behaviour of the SA-508 metal material and serves as a reference for the safety assessment of the components of reactor pressure vessels [6]. Then, the creep behaviour of the 2024-T3 aluminium alloy at high temperatures (150-200 °C) has been described numerically by implementing the Power Law model [7]. Moreover, to validate the results from the computational approach, the experimental creep test is being prepared as a benchmark.…”

Section: Introductionmentioning

confidence: 99%

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Characterisation of creep behaviour using the power law model in copper alloy

Ahmad¹,

Curiel-Sosa²,

Rongong³

2017

J. MECH. ENG. SCI.

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This paper presents a numerical strategy for the characterisation of the creep behaviour model of the copper alloy, which is widely used in aircraft applications under creep conditions. The high possibility of the material failing, while operating under load at an elevated temperature, has led to the important study of the creep lifetime prediction analysis, by presenting the Norton's rule based on the Power-law model to describe the secondary creep behaviour of the material. In order to demonstrate the nature of the creep formulation, the SOL 400 modules from MSC Nastran 2014 are implemented in order to conduct the uniaxial tensile test in 2000 N of applied load and 473 K of temperature condition. As a result, the exponential curve is formed from the relationship of the creep strain rate and stress, with a 5.1% error based on the value of the stress exponent, n, between the simulation and experimental results and this was still be acceptable because it was relatively small due to the formulation in the simulation. Consequently, a relation of the creep rate curve can then be plotted with respect to the load steps and the variation patterns due to the stress factor also being discussed. Therefore, the results show a good agreement, which indicates the capability of this model to give an accurate and precise estimation of the secondary creep behaviour of the materials.

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Section: Stress Dependence Analysissupporting

confidence: 71%

Section: Introductionmentioning

confidence: 99%

Characterisation of creep behaviour using the power law model in copper alloy

Ahmad¹,

Curiel-Sosa²,

Rongong³

2017

J. MECH. ENG. SCI.

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show abstract

“…For example, Al-Zn-Mg-Cu alloys, a kind of ultra-high strength aluminum alloy, are primarily used for high-performance aircraft components, such as wing stringers, fuselage frames and wing skins [2][3][4]. However, Al-Zn-Mg-Cu alloys are strongly sensitive to the localized corrosion [5,6].…”

Section: Introductionmentioning

confidence: 98%

Effects of pre-treatments on aging precipitates and corrosion resistance of a creep-aged Al–Zn–Mg–Cu alloy

et al. 2015

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“…Creep is considered only for the matrix and the data for tensile creep is taken from [21] and reported in Table 2. In order to verify the LMM results, ABAQUS step-by-step analyses are used and the single operating load cycle consists of three ABAQUS load steps.…”

Section: Metal Matrix Composite Numerical Modelmentioning

confidence: 99%

Creep Fatigue Life Assessment of a Pipe Intersection with Dissimilar Material Joint by Linear Matching Method

Barbera

Chen

Liu

2016

AMM

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Metal Matrix Composite (MMC) represents a valuable option as structural material for different type of structures and components. Despite this they struggle to become widely adopted due to expensive manufacturing process and complex microstructural behaviour. When subjected to cyclic load conditions the structural response of MMC is not trivial, and becomes even more difficult when high temperature load is involved. Different failure mechanisms would happen and they are originated by the different material properties between the fibre and surrounding matrix. Among all, the mismatch of thermal expansion coefficient is recognized to be the dominant one. The significantly differing coefficients of thermal expansion between ceramic and metal give rise to micro thermal stresses, which enhance the initiation of matrix micro cracks. Their performance under varying load and high temperature is complex, and hence it is difficult to have a clear understanding of the structural responses, especially when fatigue and creep damages become the main failures of MMCs. To improve current understanding of the relationship between creep fatigue interaction of MMCs, the history of thermal and mechanical loading, and the creep dwell period, a highly accurate but robust direct simulation technique on the basis of the Linear Matching Method (LMM) framework has been proposed in this paper, and been applied to model the fatigue and creep behaviour of MMCs. A homogenised FE model is considered in all analyses, which consist of continuous silicon carbide fibres embedded in a square 2024T3 aluminium alloy matrix array. Various factors that affect creep and fatigue behaviours of composites are analysed and discussed, including effects of the applied load level, dwell period and temperature on the MMC's performance. The effects of reversed plasticity on stress relaxation and creep deformation of MMC are investigated, and the behaviours of cyclically enhanced creep and elastic followup are presented. A detailed study of the creep ratchetting mechanism is also performed with the concentration on the impact of temperature and different loading conditions. The accuracy of the proposed method has been verified by detailed incremental finite element analyses using the commercial finite element solver Abaqus. Such verifications further improve the understanding of the failure mechanisms identified and discussed in this work.

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Modeling of strain hardening and creep behaviour of 2024T3 aluminium alloy at room and high temperatures

Cited by 55 publications

References 25 publications

Characterisation of creep behaviour using the power law model in copper alloy

Characterisation of creep behaviour using the power law model in copper alloy

Effects of pre-treatments on aging precipitates and corrosion resistance of a creep-aged Al–Zn–Mg–Cu alloy

Creep Fatigue Life Assessment of a Pipe Intersection with Dissimilar Material Joint by Linear Matching Method

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