Development of strength in solidifying aluminium alloys

Dahle, A. K.; Arnberg, L.

doi:10.1016/s1359-6454(96)00203-0

Cited by 128 publications

(94 citation statements)

References 10 publications

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“…The magnetic mechanism had been proved by a large number of researchers [16][17][18][19]. Moreover, the dendrite growth and break with magnetic field are further observed and certified by experiments [20].…”

Section: Discussionmentioning

confidence: 92%

The Mechanism Research of Electric Current Pulse and Electromagnetic for Grain Refinement of 6181 Aluminum Alloys During Two-roll Casting

Xu¹

2016

Res. Rev. J Mat. Sci

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6181 aluminum alloys sheets were produced by two-roll casting with electric current pulse and magnetic fields, and the microstructures were observed. The experimental results show that application of composite fields (ECP and EM field) during TRC process refines the microstructures of sheets more evenly and effectively by comparison with individual application of ECP or EM field. For visually explaining the phenomenon, the distribution and amplitude of the magnetic induction intensity B and electromagnetic force F were obtained by numerically simulated. In addition, an obvious improvement of tensile strength by physical fields was measured. But the maximum elongation was from action of magnetic field and reached 10.9%.

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Section: Discussionmentioning

confidence: 92%

The Mechanism Research of Electric Current Pulse and Electromagnetic for Grain Refinement of 6181 Aluminum Alloys During Two-roll Casting

Xu¹

2016

Res. Rev. J Mat. Sci

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“…The later work of Dahle et al in Norway (1997) differs from preceding investigations in that a permanent mold (die) was used, although the end-fed bar configuration was retained (15). Again a flat distribution, this time of density rather than porosity, was observed with the pressurized riser, as opposed to a distribution which contained a marked minimum where the non-pressurized riser was employed.…”

Section: Technical Backgroundmentioning

confidence: 93%

“…Several publications appearing over the last two decades have acknowledged the deleterious effects of porosity on fatigue behavior (3)(4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14)(15). Most authors agree that microporosity, especially the shrinkage dominated variety, has profound effects.…”

Section: Dispersed Porosity and Related Phenomena -Their Effect On Dumentioning

confidence: 99%

The Effect of Applied Pressure During Feeding of Critical Cast Aluminum Alloy Components With Particular Reference to Fatigue Resistance

Berry¹,

Luck²,

Zhang³

et al. 2003

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“…Thirdly, one must be able to link the strain to the accumulation of damage prior to failure. While a number of recent experimental studies have been designed to investigate these requirements [15][16][17][18][19][20][21][22][23][24], a comprehensive understanding linking microstructural features to semi-solid constitutive behavior is needed to improve hot tearing criteria.…”

Section: Introductionmentioning

confidence: 99%

A three-phase simulation of the effect of microstructural features on semi-solid tensile deformation

Phillion¹,

Cockcroft²,

Lee³

2008

Acta Materialia

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A direct finite element microstructure model for prediction of the deformation behavior of semisolid metallic alloys is presented. The 2D model geometry is based on a modified Voronoi tessellation, and includes rounded corners to approximate an equiaxed-globular grain structure, liquid surrounding the grains, and micro porosity. An elasto-plastic empirical constitutive equation is derived for the solid grains, while the liquid is approximated as a perfectly plastic material with a very low yield stress. The resulting three-phase model was used to investigate the effects of fraction solid, porosity, and grain size on the constitutive behavior of a semi-solid aluminum alloy, AA5182. The model predictions were validated against experimental data at high fraction solid. These simulations reveal a strong correlation between semi-solid grain size and yield stress, and between porosity and strain localization. The application of direct finite element simulations is shown to be an effective technique for examining the effects of microstructure phenomena on the macro constitutive behavior of semi-solid materials.

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Development of strength in solidifying aluminium alloys

Cited by 128 publications

References 10 publications

The Mechanism Research of Electric Current Pulse and Electromagnetic for Grain Refinement of 6181 Aluminum Alloys During Two-roll Casting

The Mechanism Research of Electric Current Pulse and Electromagnetic for Grain Refinement of 6181 Aluminum Alloys During Two-roll Casting

The Effect of Applied Pressure During Feeding of Critical Cast Aluminum Alloy Components With Particular Reference to Fatigue Resistance

A three-phase simulation of the effect of microstructural features on semi-solid tensile deformation

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