Mechanical Properties of AM60B Die Castings A Review of the AUTO21 Program on Magnesium Die-Casting

Wood, Jeffrey; Klassen, Robert D.; Gharghouri, Michael A.; Maire, Éric; Wang, G.; Berkmortel, R.

doi:10.4271/2005-01-0725

Cited by 5 publications

(3 citation statements)

References 7 publications

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“…These geometry and manufacturing-history-dependent spatial variations, also known as location-specific or local properties, should be accounted for in the design of structural applications. Studies of excised tensile samples from production instrument panel components in AM60 have shown that spatial variation in ductility can range from 1% to 14% depending on location within the component [6][7][8][9]. A key conclusion from these studies is that an understanding of the spatial variability in the mechanical properties from quasistatic tests is important because the values of ductility in a given location may influence dynamic performance of the component in service [10].…”

Section: Introductionmentioning

confidence: 99%

“…Indeed, a number of researchers have investigated the influence of such microstructural features as dendrite arm spacing, externally solidified grain size, shrinkage porosity and oxide films, or cold shuts on the mechanical properties of Mg alloys [7][8][9]. However, there still exists a substantial amount of disagreement with regard to the level of influence that particular microstructural features have on this behavior in Mg castings, particularly with regard to local ductility.…”

Section: Introductionmentioning

confidence: 99%

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Using quality mapping to predict spatial variation in local properties and component performance in Mg alloy thin-walled high-pressure die castings: an ICME approach and case study

Forsmark

Zindel

Godlewski

et al. 2015

Integr Mater Manuf Innov

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This paper explores the use of quality mapping for the prediction of the spatial variation in local properties in thin-walled high-pressure die castings (HPDC) of the magnesium alloy AM60. The work investigates the role of casting parameters on local ductility and yield strength and presents a model for predicting local ductility and yield strength in a cast component. A design of experiment (DOE) was created to examine the role of various casting parameters on local properties such as ductility and yield strength. Over 1,200 tensile samples were excised from cast parts and tested. Casting simulations were also conducted for each experimental condition. Local properties were predicted, and the local property (quality map) model was compared with a prototype production component. The results of this model were used as input to a performance simulation software code to simulate the component-level behavior under two different loading conditions. In this study, the authors bypassed the traditional Integrated Computational Materials Engineering (ICME; process-microstructure-properties) approach in favor of a semi-empirical quality mapping approach to provide estimates of manufacturing sensitive local properties for use in process and component design.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Using quality mapping to predict spatial variation in local properties and component performance in Mg alloy thin-walled high-pressure die castings: an ICME approach and case study

Forsmark

Zindel

Godlewski

et al. 2015

Integr Mater Manuf Innov

View full text Add to dashboard Cite

show abstract

“…Wood at the University of Western Ontario and colleagues, who are conducting a comprehensive study on the correlation between casting parameters, macro-and micro-defects and mechanical properties of large, complex high-pressure die castings. This multi-year project [12,13] (funded in part by the AUTO21 Network of Centres of Excellence) has made extensive use of destructive and nondestructive tools for the characterization of casting performance, including high resolution x-ray tomography (microporosity) and neutron scattering techniques (internal stress) in order to nondestructively evaluate the internal structure of sections of the castings [14]. These detailed data will serve as input to predictive models that will link the as-cast structure to the mechanical response of the material.…”

mentioning

confidence: 99%

Automotive Mg Research and Development in North America

Carpenter

Jackman

et al. 2007

MSF

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Expanding world economic prosperity and probable peaking of conventional petroleum production in the coming decades requires efforts to increase the efficiency of, and the development of alternatives to, petroleum-based fuels used in automotive transportation. North America has been aggressively pursuing both approaches for over ten years. Mainly as a result of lower prices due to global sourcing, magnesium has recently emerged as a serious candidate for lightweighting, and thus increasing the fuel efficiency of, automotive transportation. Automotive vehicles produced in North America currently use more Mg than vehicles produced elsewhere in the world, but the amounts per vehicle are very small in comparison to other materials such as steel, aluminum and plastics. The reasons, besides price, are primarily a less-developed state of technology for Mg in automotive transportation applications and lack of familiarity by the vehicle manufacturers with the material. This paper reviews some publicly-known, recent, present and future North American research and development activities in Mg for automotive applications.

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Property Variation Within the Thin-Walled Magnesium Alloy Components

Saravanan

Cooper

Blanchard

et al. 2006

Materials, Nondestructive Evaluation, and Pressure Vessels and Piping

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Utilization of magnesium alloys within the field of vehicle design offers substantial opportunity for mass reduction. This has resulted in a wide range of automotive applications. More recently, the scope of application has been extended to include components that are considered crash critical. However, the magnesium die casting process is widely reported as producing parts that exhibit large local variation in part properties. Hence, this introduces the technical challenge of how to design effectively based upon these constraints. In order to better understand this phenomenon, two large size thin walled production components were examined. Tensile test coupons were extracted from multiple locations. Micro and macro level investigations were also conducted in an effort to identify the root cause of property variation. This paper discusses the influences of porosity on mechanical property variation, specifically tensile strain to failure. Further discussion is also presented, detailing a proposed empirical model, for the prediction of local strain to failure.

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Mechanical Properties of AM60B Die Castings A Review of the AUTO21 Program on Magnesium Die-Casting

Cited by 5 publications

References 7 publications

Using quality mapping to predict spatial variation in local properties and component performance in Mg alloy thin-walled high-pressure die castings: an ICME approach and case study

Using quality mapping to predict spatial variation in local properties and component performance in Mg alloy thin-walled high-pressure die castings: an ICME approach and case study

Automotive Mg Research and Development in North America

Property Variation Within the Thin-Walled Magnesium Alloy Components

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