Alex Plotkowski
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View article: Improving Additive Manufactured Component Performance through Multi-Scale Microstructure Simulation and Process Optimization
Improving Additive Manufactured Component Performance through Multi-Scale Microstructure Simulation and Process Optimization Open
The purpose of this project was to utilize computational tools to understand the relationships between processing, microstructure, and properties for additively manufactured (AM) aluminum alloys for automotive applications, and to provide …
View article: Equilipy: a python package for calculating phaseequilibria
Equilipy: a python package for calculating phaseequilibria Open
The CALPHAD (CALculation of PHAse Diagram) approach (Nigel Saunders & Miodownik, 1998) provides predictions for thermodynamically stable phases in multicomponent-multiphase materials across a wide range of temperatures. Consequently, the C…
View article: Preliminary Results on Process Modeling Tools for Determining Variability in Additively Manufactured Stainless Steel 316 Parts
Preliminary Results on Process Modeling Tools for Determining Variability in Additively Manufactured Stainless Steel 316 Parts Open
The Advanced Materials and Manufacturing Technologies program aims to accelerate the development, qualification, demonstration, and deployment of advanced materials and manufacturing technologies to enable reliable and economical nuclear e…
View article: High Strength Aluminum Additive Manufacturing
High Strength Aluminum Additive Manufacturing Open
High-strength aluminum alloys for elevated temperature applications are desirable to replace heavier and more expensive titanium alloys. However, most aluminum alloys lose a large fraction of their strength at temperatures above approximat…
View article: Equilipy
Equilipy Open
There is high demand for high-throughput calculations of phase equilibria based on the CALPHAD method (CALculation of PHAse Diagram). High-throughput calculations are possible through HPC, currently by a commercial program called Thermo-Ca…
View article: Additively Manufacturing Nitinol Shape Memory Alloys for Advanced Actuator Designs
Additively Manufacturing Nitinol Shape Memory Alloys for Advanced Actuator Designs Open
The objective of this research was to understand the role of feedstock production in the phase transformation behavior of additively manufactured Ni-Ti alloys for advanced actuator design. Industrial adoption of additively manufactured Ni-…
View article: Dynamic Beam Shape Sensing and Control in an Open Architecture Metal AM System for Microstructure Manipulation
Dynamic Beam Shape Sensing and Control in an Open Architecture Metal AM System for Microstructure Manipulation Open
Most commercially available metal additive manufacturing (AM) systems are closed-architecture, meaning that the system manufacturer limits the ability of the user to directly control the process conditions and can modify the specified inpu…
View article: Investigation of Form-and-Print Processing of Wrought Aluminum Alloys for Industrial Applications
Investigation of Form-and-Print Processing of Wrought Aluminum Alloys for Industrial Applications Open
Conventional manufacturing of wrought aluminum alloys generally involves rolling and forming of sheets of aluminum into the finished product. While these processes rapidly produce parts, produced parts are inherently limited to uniform thi…
View article: Local Modification of Cast Aluminum Alloys via the Cast-and-Print Process
Local Modification of Cast Aluminum Alloys via the Cast-and-Print Process Open
Casting of aluminum alloys is a cost-effective way to mass manufacture bulk aluminum parts for automotive applications. However, the casting process requires filling of a mold, which imposes some limitations on the geometries that can be s…
View article: Additive manufacturing methods using aluminum-rare earth alloys and products made using such methods
Additive manufacturing methods using aluminum-rare earth alloys and products made using such methods Open
Described herein are additive manufacturing methods and products made using such methods. The alloy compositions described herein are specifically selected for the additive manufacturing methods and provide products that exhibit superior m…