A method for retrieving temperature and microstructure dependent apparent yield strength for aluminium alloys

Zhang, Z. L.; Gundersen, Ø.; Aune, Ragnhild E.; Ødegård, J.; Grong, Ø.

doi:10.1016/j.commatsci.2004.10.004

Cited by 6 publications

(6 citation statements)

References 11 publications

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“…The chemical composition of aluminum alloy (2024Al) includes 92.81 wt % aluminum, 5.51 wt % copper, and 1.68 wt % magnesium. Pure aluminum and its alloy were selected because of their diverse technological applications in the auto, aviation, and space industries …”

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confidence: 99%

Stable Biomimetic Super-Hydrophobic Engineering Materials

et al. 2005

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We describe a simple and inexpensive method to produce super-hydrophobic surfaces on aluminum and its alloy by oxidation and chemical modification. Water or aqueous solutions (pH = 1-14) have contact angles of 168 +/- 2 and 161 +/- 2 degrees on the treated surfaces of Al and Al alloy, respectively. The super-hydrophobic surfaces are produced by the cooperation of binary structures at micro- and nanometer scales, thus reducing the energies of the surfaces. Such super-hydrophobic properties will greatly extend the applications of aluminum and its alloy as lubricating materials.

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confidence: 99%

Stable Biomimetic Super-Hydrophobic Engineering Materials

et al. 2005

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“…This is occasionally carried out to evaluate the effectiveness of an alloy to counteract residual stresses via the martensitic transformation. [5][6][7]10,12,14,16,17 However, the HAZ will experience the full range of peak temperatures during welding (from ambient to the solidus temperature), and the residual stress behaviour can thus not be captured with results from a single T p . In fact, Onsoien et al suggested that it is most relevant to compare residual stress levels in the Satoh test with the maximum axial stress in girth welds.…”

Section: Ferritic Alloysmentioning

confidence: 99%

“…The Satoh test has recently been applied as a means to study residual stress evolution in welds in a controlled manner for the purpose of making direct comparisons between engineering alloys. [5][6][7]10,[12][13][14][15][16][17] As shown schematically in Fig. 1, a sample is locally heated and cooled under conditions that simulate the heating and cooling rates during fusion welding.…”

Section: Introductionmentioning

confidence: 99%

Influence of alloy type, peak temperature and constraint on residual stress evolution in Satoh test

Galler

DuPont

Siefert

2016

Science and Technology of Welding and Joining

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The evolution of residual stress in welds is affected by a variety of factors such as joint design, welding parameters, material properties and the possible presence of phase transformations. The Satoh test can be useful as a method to understand differences in welding residual stresses among various materials. This study compares the evolution of residual stress measured in the Satoh test for ferritic and stainless steels. For weld thermal cycles with a peak temperature above Ac 3 , the ferritic alloys exhibit lower residual stresses than the austenitic alloys due to the well known reduction in stress from the martensitic or bainitic transformation. However, the residual stress levels among these alloys are similar for peak temperatures below Ac 3 . The application of constraint during both the heating and cooling portions of the thermal cycle affects the final magnitude of residual stress in a way that is not often considered.

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“…It is thus a method for retrieving stress versus temperature (s-T) curves and evaluating the effect of phase transformations on the induced stresses. The test has also been applied for determining material parameters in constitutive equations for aluminium 6 and steel 7 as well as for validating constitutive equations. [8][9][10] A complication associated with the Satoh test, though, is the thermally inhomogeneous specimen.…”

Section: Introductionmentioning

confidence: 99%

Simplified method for establishing constitutive equations and flow stress data for welding stress modelling

Aarbogh¹,

M’Hamdi²,

Mo³

et al. 2008

Science and Technology of Welding and Joining

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A new method, called the representative s-T curve approach, has been proposed by which the temperature and microstructural dependency of the flow stress in welding stress simulation tools can be relatively easily determined. The method is based on the ideal plasticity approach and on considering the evolution of the material properties during the temperature cycle in Satoh testing as representative for that taking place in all material points in the heat affected zone in a real welding operation. The method requires prior knowledge to the relevant Continuous Cooling Transformation (CCT) diagram.

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A method for retrieving temperature and microstructure dependent apparent yield strength for aluminium alloys

Cited by 6 publications

References 11 publications

Stable Biomimetic Super-Hydrophobic Engineering Materials

Stable Biomimetic Super-Hydrophobic Engineering Materials

Influence of alloy type, peak temperature and constraint on residual stress evolution in Satoh test

Simplified method for establishing constitutive equations and flow stress data for welding stress modelling

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