About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
|
Symposium
|
Aluminum Alloys, Characterization and Processing
|
Presentation Title |
E-11: Meshfree Simulation and Analysis of Contact Conditions and Microstructure Evolution in Shear Assisted Processing and Extrusion (ShAPE) of Aluminum Alloy 7075 |
Author(s) |
Lei Li, Tianhao Wang, Scott A Whalen, Suveen N Mathaudhu, Glenn J Grant, Ayoub Soulami |
On-Site Speaker (Planned) |
Lei Li |
Abstract Scope |
Shear assisted processing and extrusion (ShAPE) is a solid-phase processing technique that adds an additional shear force as compared with a conventional extrusion approach. This work proposes a thermomechanical meshfree model for ShAPE processing of AA7075 using the smoothed particle hydrodynamics (SPH) method. The model is first validated thoroughly by experimental data in terms of material flow, die face temperature, and extrusion force with various processing parameters. The validated model is then used to analyze the steady-state contact conditions and heat generation rates during ShAPE processing. Simulation results reveal that extrusions conducted at lower temperatures and higher strain rates yield more refined grains and possibly higher material strength, which is consistent with the experimental observations. The strain rate and temperature histories are also extracted and used for predicting Zener-Hollomon parameter and average material grain size. Numerical results on the microscale are also found to agree with experimental observations. |
Proceedings Inclusion? |
Planned: Light Metals |
Keywords |
Aluminum, Modeling and Simulation, ICME |