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Meeting 2019 TMS Annual Meeting & Exhibition
Symposium TMS-DGM Symposium on Lightweight Metals: A Joint US-European Symposium on Challenges in Light Weighting the Transportation Industry
Presentation Title A Theory for Designing Ductile Materials with Anisotropy
Author(s) Amine Benzerga
On-Site Speaker (Planned) Amine Benzerga
Abstract Scope A predictive theory is presented which enables projections of relative ductility and toughness in a wide class of anisotropic materials. Qualitative, and potentially quantitative, trends for stress-state dependent ductility and fracture toughness are obtained with no experimental input other than the basic stress-strain curves, evidence of failure by progressive cavitation, and basic information about the inclusion content. A key concept is the anisotropy-effect-on-ductility (AED) index, which correlates complex three-dimensional anisotropy attributes of a material to a single scalar index of ductility and toughness. This index has a fundamental meaning as it emerges form a scale transition operation by means of micromechanics. A proof-of-concept is presented. The theory is relevant to lightweight metals whose anisotropy is inherent (Mg, Al), and eventually induced by processing (sheet metal). It is also relevant to additively manufactured metals where both porosity and process-induced anisotropy seem unavoidable so that the theory is useful in ductility-strength-cost tradeoffs.
Proceedings Inclusion? Planned: Light Metals

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

A Novel Flexible SSM and HPDC Equipment to Process Secondary Aluminium Alloys for Decarbonising Lightweight Parts in Automotive Sector
A Theory for Designing Ductile Materials with Anisotropy
Assessing the Impact of Texture and its Gradients on the Forming Limits of an AA6xxx Sheet Alloy
D-35: Development of New Magnesium Alloy Strengthened by Nano Second Phase Precipitation
D-36: Issues of Castability of Magnesium Alloys
Effect of Split Sleeve Cold Expansion on the Residual Stress, Texture and Fatigue Life of Rolled AZ31B Magnesium Alloy
Increasing the Strength and Electrical Conductivity of AA6101 Aluminum by Nanostructuring
Influences of SiC Particle Additions on the Grain Refinement of Mg-Zn Alloys
Mechanical and Microstructural Characterization of Ultrasonic Metal Welded Large Cross Section Aluminum Wire/Copper Terminal Joints
The Dependence of Local Strain Distribution on Quench Rate for Extruded Al-Mg-Si-Mn-Fe Alloys
The Effect of through Thickness Texture Variation on the Anisotropic Mechanical Response of an Extruded Al-Mn-Fe-Si Alloy
The Effects of Strontium Addition on the Microstructures and Mechanical Properties of Al-7Si Alloy Reinforced with In-situ Al3Ti Particulates

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