Effect of dendrite arm spacing on cleavage fracture toughness of Al–5Si–1Cu alloy

Wierzbińska, M.; Sieniawski, Jan

doi:10.1179/136404604225020632

Cited by 7 publications

(4 citation statements)

References 3 publications

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“…This effect has been observed repeatedly in the literature. Although some contribution of SDAS to yield strength as a result of the Hall-Petch effect has been reported, [53] to the authors' knowledge, only a limited number of attempts have been made to explain the strong effect of SDAS on ductility from a micromechanical point of view. For instance, Doglione et al [54] made in-situ observations on the damage accumulation to Si particles during a tensile test.…”

Section: Data Analysis and Discussionmentioning

confidence: 98%

On the Ductility of Cast Al-7 Pct Si-Mg Alloys

Tiryakioğlu

Campbell

Alexopoulos

2009

Metall Mater Trans A

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The yield strength-elongation relationship in cast Al-7 pct Si-Mg castings has been investigated by analyzing 18 datasets from the literature on premium quality castings. The data representing the elongation for a given yield strength have been found to fall within an envelope, the top limit of which represents the ductility potential of Al-7 pct Si-Mg alloy castings. Analysis of maximum elongation data indicated that secondary arm spacing has no effect on elongation. It has also been determined that the quality index of Drouzy et al. does not provide a particularly accurate representation of the trends in maximum ductility data. A new quality index based on those proposed previously by Ca´ceres and Din et al. is proposed. Moreover, using the fracture toughness equation by Hahn and Rosenfield, intrinsic plane strain fracture toughness and intrinsic elongation values have been found to be correlated, indicating the internal consistency of the approach taken in this study. The implications of these results are discussed in the article.

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Section: Data Analysis and Discussionmentioning

confidence: 98%

On the Ductility of Cast Al-7 Pct Si-Mg Alloys

Tiryakioğlu

Campbell

Alexopoulos

2009

Metall Mater Trans A

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“…3) has been generally assumed to be a kind of Hall-Petch effect. There is some truth in this for the yield strength of Al-Si casting alloys, as witnessed by Gurland [13] and more recently by the measurements of Wierzbinska and Sieniawski [6]. These authors found that the silicon particles at grain and dendrite boundaries in Al-Si alloys were effective obstacles to slip.…”

Section: (Iv) Control Of Yield Stress By Dasmentioning

confidence: 92%

“…3. Mechanical properties as a function of DAS measured experimentally for an Al-7Si-0.4Mg alloy [12] and for Al-3Mg alloy predicted here from data by [6].…”

Section: (Ii) Control Of Grain Size By Grain Refining Additionsmentioning

confidence: 99%

Modelling Microstructure and Properties: The Contributions of Grain Size, DAS and Bifilms

Campbell

Tiryakioğlu

2006

MSF

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The modelling of microstructure, and hence the properties, of cast alloys has so far been attempted assuming the liquid metal is free from defects. The growing appreciation that bifilms, of size measured in millimeters, are usually abundant in liquid metals, and control many features of the casting, has led to this paper in which some of the known and some of the expected effects are reviewed. It is suggested that bifilms cause major effects on microstructure and properties and their presence can vastly overpower the effect of traditionally simulated structural features.

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“…The corrosion resistance can be reduced by the pores and pits in layer or the presence of harmful alloy-forming elements and admixtures, particularly the copper or by impurities [4]. The intermetallic phase of copper with aluminium dissolve during anodizing, which causes lowering hardness and thickness of coats, and enlargement the porosity [5][6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Structure and Functional Properties of Surface Layer Produced on Cast Aluminium Light Alloys by Appliance of Anodisation

Konieczny

Labisz

Dolata-Grosz

2015

SSP

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The aim of the work is presents the influence of casting method and anodic treatment parameters on properties, thickness and structure of an anodic layer formed on aluminium casting alloys. Investigations were carried out on the laser profile measurement gauge MicroProf from company FRT, abrasive wear test was made with using ABR-8251 equipment delivered by TCD Teknologi ApS and microstructure investigations were made with using a light microscope equipped with an electronic camera configured with a computer on two casting aluminium alloys which both were founding by pressure die casting and gravity casting. The researches included analyse of the influence of chemical composition, geometry, roughness and abrasive wear resistant of anodic layer obtained on aluminium casts.Research limitations/implications Contributes to research on anodic layer for aluminium casting alloys. Practical implications Conducted investigations lay out the areas of later researches, especially in the direction of the possible, next optimization anodisation process of aluminium casting alloys, e.g. in the range of raising resistance on corrosion. Originality of this research was to describe the range of possible applications increases for example as materials on working building constructions, elements in electronics and construction parts in air and motorization industry in the aggressive environment.

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Effect of dendrite arm spacing on cleavage fracture toughness of Al–5Si–1Cu alloy

Cited by 7 publications

References 3 publications

On the Ductility of Cast Al-7 Pct Si-Mg Alloys

On the Ductility of Cast Al-7 Pct Si-Mg Alloys

Modelling Microstructure and Properties: The Contributions of Grain Size, DAS and Bifilms

Structure and Functional Properties of Surface Layer Produced on Cast Aluminium Light Alloys by Appliance of Anodisation

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