Thermal Fatigue Studies Using HF Induction Heating of Die Materials for Light Metals Casting

Stefan Gulizia; Darryl Jones; Mahnaz Z. Jahedi; Trevor Kearney; Paul Koltun

doi:10.4028/www.scientific.net/MSF.618-619.357

Paper Titles

Towards a More Holistic Approach to Quality Improvements in Aluminium Die Casting
p.341

Decision and Design Methodologies for the Lay-Out of Modular Dies for High-Pressure-Die-Cast-Processes
p.345

Classification of Streaking Defects on Anodized Aluminium Extrusions
p.349

Optimisation of the Solution Heat Treatment of Rheo-Processed Al-Cu-Mg-(Ag) Alloys A206 and A201
p.353

Thermal Fatigue Studies Using HF Induction Heating of Die Materials for Light Metals Casting
p.357

Microstructural Modification of A206 Aluminium via Friction Stir Processing
p.361

The T5 Heat Treatment of Semi-Solid Metal Processed Aluminium Alloy F357
p.365

Magnesium Matrix Composites Reinforced with Titanium Particles
p.371

Cold Spray of Al-MMC Coatings on Magnesium Alloys for Improved Corrosion and Wear Resistance
p.377

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Thermal Fatigue Studies Using HF Induction Heating of Die Materials for Light Metals Casting

Abstract:

In this study a new thermal fatigue test rig has been developed that can apply a net energy input to materials with different physical properties using HF induction heating. Several commercially available hot work ferrous and non-ferrous die materials were evaluated with the aim of providing a basis for selecting an appropriate die material with good thermal fatigue resistance for a given HPDC application. The results show materials with high thermal conductivity such as tungsten-based materials are more resistant to thermal fatigue cracking than conventionally used hot work tool steels for HPDC dies. The initiation and growth of thermal fatigue cracks were examined and periodically evaluated using computer image analysis, for crack morphology, and hardness on each material tested.