| About this Abstract |
| Meeting |
2019 TMS Annual Meeting & Exhibition
|
| Symposium
|
Solidification Processing of Light Metals and Alloys: An MPMD Symposium in Honor of David StJohn
|
| Presentation Title |
A Brief History of Grain Refinement |
| Author(s) |
Mark A. Easton, Ma Qian, Michael Bermingham, Peng Cao |
| On-Site Speaker (Planned) |
Mark A. Easton |
| Abstract Scope |
One of the key technologies in light metals solidification processing is how to control the grain size. A fine equiaxed microstructure has a number of benefits including the reduction in defects such as hot tearing and porosity size, improved homogeneity of properties and improved performance of post-processing operations. This presentation will discuss the development of the interdependence theory as a method for understanding and predicting grain size changes. It will also discuss how its application has led to a number of commercial applications including a reduction in the cost of grain refining additions in aluminium billets, the optimization of additions to Al-Si foundry alloys, the development of a magnesium grain refiner (microZir), understanding of grain refinement using ultrasonics, titanium grain refinement and most recently in additive manufacturing. |
| Proceedings Inclusion? |
Planned: |