Skip to main content
U.S. Department of Energy
Office of Scientific and Technical Information

Phase stability in cast and additively manufactured Al-rich Al-Cu-Ce alloys

Journal Article · · Journal of Alloys and Compounds
Additively manufactured (AM) eutectic Al alloy systems have been studied extensively for advantageous thermal stability and mechanical properties due to their refined microstructures. Al-Cu-Ce alloys are one subset of these AM eutectic alloys. Here we studied phase stability in AM Al-Cu-Ce alloys and compared it to that of conventionally cast ones. A new phase, Al8Cu3Ce, was identified in the microstructures of both AM and cast Al-Cu-Ce alloys. This Al8Cu3Ce phase was not previously included on experimental or thermodynamically calculated phase diagrams of the Al-Cu-Ce system. Therefore, we performed additional thermodynamic modeling of the system. These models were experimentally validated with cast and subsequently heat-treated Al-Cu-Ce alloys. We found that despite the refined microstructure of the AM alloys, the phases formed were consistent with the cast alloys, suggesting that AM processing did not significantly alter the formation and stability of phases from that in the conventional alloys. In conclusion, this work has resolved inconsistent previous descriptions of the Al-Cu-Ce ternary phase diagram in the Al-rich region and resulted in the addition of the Al8Cu3Ce as an equilibrium phase above 500 °C.
Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE Office of Energy Efficiency and Renewable Energy (EERE); USDOE Office of Energy Efficiency and Renewable Energy (EERE), Energy Efficiency Office. Advanced Manufacturing Office; USDOE Office of Energy Efficiency and Renewable Energy (EERE), Transportation Office. Vehicle Technologies Office; USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC02-06CH11357; AC05-00OR22725
OSTI ID:
1886498
Alternate ID(s):
OSTI ID: 1960843
Journal Information:
Journal of Alloys and Compounds, Journal Name: Journal of Alloys and Compounds Journal Issue: 1 Vol. 926; ISSN 0925-8388
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English

References (27)

Analysis of Three-dimensional Atom-probe Data by the Proximity Histogram journal September 2000
Freezing Range, Melt Quality, and Hot Tearing in Al-Si Alloys journal February 2018
Al-Ce-Cu (Aluminum-Cerium-Copper) journal August 2007
Solidification Simulation Using Scheil Model in Multicomponent Systems journal August 2009
Microstructure and Properties of Novel Heat Resistant Al–Ce–Cu Alloy for Additive Manufacturing journal November 2018
Theory of microstructural development during rapid solidification journal May 1986
Mechanical properties in the semi-solid state and hot tearing of aluminium alloys journal January 2004
The ternary Al–Ce–Cu phase diagram in the aluminum-rich corner journal September 2007
Evaluation of an Al-Ce alloy for laser additive manufacturing journal March 2017
Microstructure and properties of a high temperature Al–Ce–Mn alloy produced by additive manufacturing journal September 2020
Elevated temperature ductility dip in an additively manufactured Al-Cu-Ce alloy journal November 2021
Phase relations in the Cu-poor part of the Ce–Al–Cu system at 503K journal September 2009
Thermodynamic assessment of Al–Ce–Cu system journal September 2009
Primary solidification of ternary compounds in Al-rich Al–Ce–Mn alloys journal December 2020
The role of Si in determining the stability of the θ′ precipitate in Al-Cu-Mn-Zr alloys journal May 2021
The influence of processing parameters on aluminium alloy A357 manufactured by Selective Laser Melting journal November 2016
Generalised ‘Jackson–Hunt’ model for eutectic solidification at low and large Peclet numbers and any binary eutectic phase diagram journal July 2004
Experimental validation of Scheil–Gulliver simulations for gradient path planning in additively manufactured functionally graded materials journal June 2020
An additively manufactured AlCuMnZr alloy microstructure and tensile mechanical properties journal August 2020
Fabrication and Characterization of High Strength Al-Cu Alloys Processed Using Laser Beam Melting in Metal Powder Bed journal January 2014
A review on selective laser sintering/melting (SLS/SLM) of aluminium alloy powders: Processing, microstructure, and properties journal October 2015
Strategies for fabricating atom probe specimens with a dual beam FIB journal March 2005
Microstructure and properties of additively manufactured Al–Ce–Mg alloys journal March 2021
Search for promising compositions for developing new multiphase casting alloys based on Al-Cu-Mg matrix using thermodynamic calculations and mathematic simulation journal November 2012
Determining hot cracking index of Al–Mg–Zn casting alloys calculated using effective solidification range journal July 2015
Processing AlSi10Mg by selective laser melting: parameter optimisation and material characterisation journal November 2014
Microstructure and Phase Composition of Al-Ce-Cu Alloys in the Al-Rich Corner journal July 2006

Similar Records

Effect of Mn on eutectic phase equilibria in Al-rich Al-Ce-Ni alloys
Journal Article · Wed Jul 19 20:00:00 EDT 2023 · Journal of Alloys and Compounds · OSTI ID:1994687

On the high-temperature stability of the Al8Cu3Ce intermetallic in an additively manufactured Al-Cu-Ce-Zr alloy
Journal Article · Mon Jul 18 20:00:00 EDT 2022 · Materials Characterization · OSTI ID:1877487

Al-Cu-Ce(-Zr) alloys with an exceptional combination of additive processability and mechanical properties
Journal Article · Fri Oct 15 20:00:00 EDT 2021 · Additive Manufacturing · OSTI ID:1838985