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Meeting MS&T23: Materials Science & Technology
Symposium Light Metal Technology
Presentation Title Elastic-plastic Approach on Transformation of LPSO Phases in a Mg-RE Alloy by Nanoindentation
Author(s) Petra Maier, Merle Schmahl, Claudia Fleck
On-Site Speaker (Planned) Petra Maier
Abstract Scope Nanomechanical analysis of extruded Mg-Dy-Nd-Zn-Zr with modified LPSO-phase morphologies by heat-treatment provide an insight on the elastic-plastic behavior of the phase transformation and microstructural changes. The focus lies on the H/E and H/E-ratios of the initial and solution heat-treated alloy with adapted annealing times, 0.5 to 120h, and cooling rates. The fine grains and blocky and lamellar LPSO-phases change during solution heat-treatment in coarser grains with partially dissolved LPSO-phases, until the enrichment of the Mg-matrix after long annealing times causes reactivated precipitation of LPSO-lamellae and grain size reduction. With a hardness maximum at 24h also the H/E-ratio shows the highest values, for LPSO-phases higher than the solid matrix and LPSO-lamellae containing grains. There is no trend for E. The H/E-ratio shows a peak at 24h for the solid matrix. The peak value for H/E of the LPSO-lamellae containing grains seems to corelate with the highest grain size at 72h.

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

A Case of Update on 330kA Aluminium Potline in China
A Machine-learning Assisted Optimization Approach and Microstructure Characterization Method for Laser Powder Bed Fusion
Assesment of the Mechanical Properties of an AlMg7Cu2 Alloy with TiBZrMoV Alloying at Different T6 Solution Heat Treatment Conditons and Modeling of Its Behavior by Continuum Mechanics Approach
Characterisation of A201 Alloy Produced by Low Pressure Die Casting into Resin Sand Moulds
Development of Al-Ce-(Fe)-(Mg) Alloys for Elevated Temperature and High Strength Applications
Effect of Erbium and Europium Addition on Microstructure and Mechanical Properties of A356, A206 and A201 Alloys
Effect of Melt Thermal-rate Treatment on Microstructure and Mechanical Properties in Al-Zn-Mg-Cu Alloy Billets Fabricated by Direct-chill Casting
Effect of Zr-Er-Y L12 Phase on Precipitation Behavior of Al-Zn-Mg Alloy
Effects of Pass Strains of Multi-directional Forging and Additive Cold Rolling of Pure Ti on the Microstructural Evolution and Mechanical Properties
Elastic-plastic Approach on Transformation of LPSO Phases in a Mg-RE Alloy by Nanoindentation
Evolution of Spheroidal α-AlFeSi Phase in 1200 Aluminum by 3D Visualization Using FIB-SEM
H-1: Numerical Simulation of Effect of Process Parameters on Solidification Structure in Titanium Alloy TC4 Vacuum Arc Remelting Process
Importance of Runner Design in the Reproducibility of Tensile Tests
Improved Strength in Mg-Al Dissimilar Impact Welding by Surface Nanocrystallization of Mg Alloy Sheet
Inductance-based Structural Self-sensing, as Shown for Sensing Shape-changing Deformation In Aluminum
Influence of Ce, Ni and Cu on Castability and Mechanical Properties of Al Piston Alloys
Investigating Hydrogen Porosity in Aluminum Laser Welding Using a Three-dimensional Cellular Automaton Model
Investigation on the Grain Refinement of Mg-Al Alloys by Superheating Process Using Rapid Solidification Process
Mechanical Property Comparison of Al11Si Wheels Grain Refined by Ti, Nb and Nucleant 1582
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Observation of Impact Deformation and Fracture on Severe Plastic Deformed Ti by Using Synchrotron Radiation
Optimization of Die Casting Process with Various Oxygen Concentration
Phase Stability in Laser Melted Microstructures of Al-X (X=Zr, Nb, V) Alloys
Physics-constrained, Inverse Design of High-temperature, High-strength, Creep-resistant Printable Al Alloys Using Machine Learning Methods
Precipitate-strengthened Micromechanical Behaviors of Magnesium Alloy Under Cyclic Loading
Production of Titanium Wire from Scrap Material Using Continuous Extrusion Machine
Role of Alloying Elements and Solidification Conditions on the Evolution of Fe-rich Intermetallic Phases in Recycled Al-Si Alloys with Higher Fe
Role of Guinier-Preston Zones in Achieving High Strength-ductility in a New Mg-Zn-Al-Ca-Mn-Ce Sheet Alloy
Role of Interfaces on the Orientation Dependent Spheroidization Response of -colonies in Ti-6Al-4V Alloy
Selective Laser Melting of a TiB2/Al-Cu-Mg-Ni-Sc Composite
Solidification Evolution, Microstructure and Tensile Properties of Al-Mg-Sc Alloys
Study on the Improvement of the Mechanical Properties Heavy Commercial Vehicle’s Wheel by the Molten-forged on the A356 Alloy
The Beneficial Effects of Ce Additions on High-Fe Secondary Al-Si Casting Alloys
The Myth on the Pore Formation in Aluminum Casting on the Alloying with Rare Earth Elements
Through-thickness Heterogeneity in the Mechanical Properties of Hot Rolled AA7075-T651

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