Ut-battelle, Inc.

Iowa State University Research Foundation Inc

The University of Tennessee Research Foundation

Eck Industries, Inc.

Lawrence Livermore National Security, LLC

Carl Zeiss Industrial Metrology, LLC

Alex J Plotkowski

Ryan Dehoff

Orlando Rios

David J Weiss

Hunter B Henderson

Zachary C Sims

Ryan T Ott

Sudarsanam Suresh Babu

Niyanth Sridharan

Scott McCall

Amit Shyam

Marcin B Bauza

Michael S Kesler

Ying Yang

Peeyush Nandwana

Kevin D Sisco

Sumit Bahl

Aleksandr Lisovich

Edson Costa Santos

Curtis Frederick

Paul Brackman

Pradeep Bhattad

Lawrence Allard, Jr

Jason James Tenboer

An apparatus includes a control system that defines a test part having multiple features of multiple feature types. The control system controls an additive manufacturing (AM) machine to print multiple copies of the test part, with each copy being printed according to a respective set of values used as printing parameters. A measurement system obtains a computed tomography (CT) image of each of the copies of the test part. An analysis system, for each of the plurality of feature types, analyzes the CT images to identify a selected set of values for the printing parameters. The analysis system identifies a portion of the CT image related to a first feature and assesses its density based on an average grayscale value. The AM machine is then controlled to print production parts according to, for each feature type of the production parts, the selected set of values for the printing parameters.

Method for rapid development of additive manufacturing parameter set

Disclosed herein are embodiments of an Al&#x2014;Ce&#x2014;Mn alloy for use in additive manufacturing. The disclosed alloy embodiments provide fabricated objects, such as bulk components, comprising a heterogeneous microstructure and having good mechanical properties even when exposed to conditions used during the additive manufacturing process. Methods for making and using alloy embodiments also are disclosed herein.

Aluminum-cerium-manganese alloy embodiments for metal additive manufacturing

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 mechanical properties as compared to their cast counterparts. Using the compositions and methods described herein, products that do not exhibit substantial coarsening, such as at elevated temperatures, can be obtained. The products further exhibit uniform microstructures along the print axis, thus contributing to improved strength and performance. Additives also can be used in the alloys described herein.

Additive manufacturing methods using aluminum-rare earth alloys and products made using such methods

Embodiments of surface-hardened aluminum-rare earth alloys and methods of making the alloys are disclosed. In some embodiments, the alloy comprises aluminum and 4 wt % to 60 wt % of a rare earth component X having a maximum solid solubility of &#x2264;0.5 wt % in aluminum. The surface-hardened alloy component has an alloy bulk portion and a hardened alloy surface portion. At least a portion of the hardened alloy surface portion has a Vickers hardness that is at least 30% greater than a Vickers hardness of the alloy bulk portion.

Surface-hardened aluminum-rare earth alloys and methods of making the same

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Oak Ridge, TN, United States of America

Alex J Plotkowski