ProgramMaster Logo
Conference Tools for 2016 TMS Annual Meeting & Exhibition
Login
Register as a New User
Help
Submit An Abstract
Propose A Symposium
Presenter/Author Tools
Organizer/Editor Tools
About this Abstract
Meeting 2016 TMS Annual Meeting & Exhibition
Symposium Shape Casting: 6th International Symposium
Presentation Title Real-time Radiography and Modeling of Porosity Formation in an A356 Aluminum Alloy Wedge Casting
Author(s) Vahid Khalajzadeh, Christoph Beckermann, David D. Goettsch
On-Site Speaker (Planned) Vahid Khalajzadeh
Abstract Scope The formation of shrinkage porosity in a wedge shaped A356 aluminum casting is observed in real time using video radiography. An image processing technique is developed to quantify the through-thickness average porosity distribution in the casting as a function of time. The solidification and cooling of the casting is simulated in order to obtain the temperature and solid fraction fields. It is found that once the wedge becomes isolated from the in-gate, surface sinks develop until the solid fraction reaches approximately 50%. Subsequently, internal porosity starts forming in the upper part of the wedge. This interdendritic porosity spreads over the region with the lowest solid fraction and continually increases until the casting is fully solidified. The maximum porosity percentage is measured in the thermal center of the wedge. A computational model is proposed to predict the evolution of the porosity in the aluminum casting.
Proceedings Inclusion? Planned: A print-only volume

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

A Coupled Thermal-stress Model of A319 Alloy Chilled Sand Casting
Analytical Model of Filling Fine Features and Sharp Corners in Investment Casting of CMSX-4
Bifilms and Hot Tearing of Al-Si Alloys
Change in Si Morphology with Time and Temperature in Sr Modified A356
Characterization of Tensile Deformation in AZ91D Mg Alloy Castings
Crack Susceptibility of Binary Aluminum Alloys: Analytical Equations
Effect of Duration on Ti Grain Refinement of A356 and Melt Quality
Effects of Casting Conditions on End Product Defects in Direct Chill Casted Hot Rolling Ingots
Effects of Sr on the Microstructure of Electromagnetically Stirred Semi Solid Hypoeutectic Al-Si Alloys
Evolution of Primary Fe-rich Compounds in Secondary Al-Si-Cu Alloys
Grain Refinement of Al-Si Hypoeutectic Alloys by Al3Ti1B Master Alloy and Ultrasonic Treatment
Influence of Process Parameters on the Microstructure and Casting Defects of a LPDC Engine Block
Methods of Reducing Materials’ Waste and Saving Energy in Investment Casting
Modeling of Distortion of a Steel Bracket Sand Casting
On The Mean Stress Correction in Fatigue Life Assessment in Cast Aluminum Alloys
On the Properties and Performance of Ablation Cast Components
On the Relationship between Quality Index, Fatigue Life and Fracture Toughness Distributions in D357 and B201 Alloy Castings
Preliminary Investigation of the Grain Refinement Mechanism in Cu Alloys
Quality Assessment of A356 Ingots from Different Suppliers in Wheel Production
Real-time Radiography and Modeling of Porosity Formation in an A356 Aluminum Alloy Wedge Casting
SiC Particle Reinforced Al Matrix Composite by SIMA
Solidification Analysis of Magnesium Alloys Using In-situ Neutron Diffraction
The Reliability of Ductile Iron Casting Dependent on Runner System Design: An Example of Support Bracket of Brake Caliper

Questions about ProgramMaster? Contact programming@programmaster.org