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

Phase Selection During Solidification and Solid-State Phase Transformations in an Al-10Ce-8Mn (wt pct) Alloy

Journal Article · · Metallurgical and Materials Transactions. A, Physical Metallurgy and Materials Science
 [1];  [2];  [3];  [4]
  1. Univ. of Tennessee, Knoxville, TN (United States)
  2. Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
  3. Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States); Univ. of Texas at El Paso, TX (United States)
  4. Univ. of Tennessee, Knoxville, TN (United States); Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)

In multicomponent Al-Ce alloys, and especially after additive manufacturing (AM), complex and metastable solidification microstructures are frequently observed. Here, in this research, the relationship between solidification conditions and phase selection are explored for an Al-10Ce-8Mn (wt pct) alloy using a systematic study of laser melting conditions. Three solidification modes were observed: primary Al10Mn2Ce; primary Al20Mn2Ce; and eutectic FCC Al + Al20Mn2Ce. These solidification modes were correlated to specific liquid-solid interface velocities using a simple thermal model, showing the change in primary solidification phase for low (< 6.8 × 10−4 m/s), moderate (between 8.2 × 10−4 and 5.9 × 10−2 m/s) and high solidification velocities (> 6.2 x 10−2 m/s) for the above three solidification microstructures, respectively. These results were rationalized by using interface response function (IRF) theory to describe the solidification undercooling for the possible primary intermetallic phases. The implication of the local phase selection from differing solidification conditions is summarized by a comparison of hardness which demonstrates the potential variance of Vickers hardness from 101 to 242 (VHV) by changing the laser velocity from 1 to 83 mm/s. Interestingly, on heat treatment at 400°C, the decomposition pathways of the solidification microstructure and hardness were also found to be different, thereby opening multiple pathways for spatial microstructure and property control within AM components.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Office of Sustainable Transportation. Vehicle Technologies Office (VTO)
Grant/Contract Number:
AC05-00OR22725
OSTI ID:
2583840
Journal Information:
Metallurgical and Materials Transactions. A, Physical Metallurgy and Materials Science, Journal Name: Metallurgical and Materials Transactions. A, Physical Metallurgy and Materials Science Journal Issue: 12 Vol. 55; ISSN 1543-1940; ISSN 1073-5623
Publisher:
SpringerCopyright Statement
Country of Publication:
United States
Language:
English

References (57)

Interdendritic Spacing: Part II. A Comparison of Theory and Experiment journal June 1984
Analysis of solidification microstructures in Fe-Ni-Cr single-crystal welds journal June 1990
The use of computational thermodynamics for the determination of surface tension and Gibbs–Thomson coefficient of multicomponent alloys journal April 2018
Phase stability in a powder-processed Al–Mn–Ce alloy journal February 2014
Laser powder bed fusion of Al–10 wt% Ce alloys: microstructure and tensile property journal July 2020
Gas Atomization of Amorphous Aluminum: Part I. Thermal Behavior Calculations journal August 2009
Gas Atomization of Amorphous Aluminum Powder: Part II. Experimental Investigation journal August 2009
Improved High-Temperature Aluminum Alloys Containing Cerium journal February 2019
Ageless Aluminum-Cerium-Based Alloys in High-Volume Die Casting for Improved Energy Efficiency journal April 2018
Dendrite growth at the limit of stability: tip radius and spacing journal January 1981
A second report on diagrams of microstructure and hardness for heat-affected zones in welds journal November 1984
Morphological stability of a planar interface under rapid solidification conditions journal August 1986
Theory of eutectic growth under rapid solidification conditions journal April 1987
Theory for the trapping of disorder and solute in intermetallic phases by rapid solidification journal December 1989
Rapidly solidified AlCu alloys—I. experimental determination of the microstructure selection map journal December 1993
Solute trapping in aluminum alloys journal October 1994
The PANDAT software package and its applications journal June 2002
Diffusion coefficients of some solutes in fcc and liquid Al: critical evaluation and correlation journal December 2003
Time-resolved X-ray diffraction investigation of primary weld solidification in Fe-C-Al-Mn steel welds journal November 2002
Numerical modeling of heat-transfer and the influence of process parameters on tailoring the grain morphology of IN718 in electron beam additive manufacturing journal June 2016
Evaluation of an Al-Ce alloy for laser additive manufacturing journal March 2017
Localized melt-scan strategy for site specific control of grain size and primary dendrite arm spacing in electron beam additive manufacturing journal November 2017
Microstructure and properties of a high temperature Al–Ce–Mn alloy produced by additive manufacturing journal September 2020
A creep-resistant additively manufactured Al-Ce-Ni-Mn alloy journal April 2022
PANDAT software with PanEngine, PanOptimizer and PanPrecipitation for multi-component phase diagram calculation and materials property simulation journal June 2009
A sensitivity analysis of the columnar-to-equiaxed transition for Ni-based superalloys in electron beam additive manufacturing journal December 2018
Fatigue properties of AlSi10Mg obtained by additive manufacturing: Defect-based modelling and prediction of fatigue strength journal January 2018
Insight into the complex ternary phase behavior in Al-Mn-Ce alloys journal December 2017
Primary solidification of ternary compounds in Al-rich Al–Ce–Mn alloys journal December 2020
Phase stability in cast and additively manufactured Al-rich Al-Cu-Ce alloys journal December 2022
Heterogeneous phase transformation pathways in additively manufactured Al-Ce-Mn alloys journal March 2023
Study on unsupported overhangs of AlSi10Mg parts processed by Direct Metal Laser Sintering (DMLS) journal October 2015
On the high-temperature stability of the Al8Cu3Ce intermetallic in an additively manufactured Al-Cu-Ce-Zr alloy journal September 2022
Design and production of Al-Mn-Ce alloys with tailored properties journal November 2016
Microstructural features of Sc- and Zr-modified Al-Mg alloys processed by selective laser melting journal February 2017
Enhanced thermal coarsening resistance in a nanostructured aluminum-cerium alloy produced by additive manufacturing journal November 2021
Metal vaporization and its influence during laser powder bed fusion process journal March 2022
Change in microstructure of selectively laser melted AlSi10Mg alloy with heat treatments journal September 2017
Heat treatment effect on the mechanical properties and fracture mechanism in AlSi10Mg fabricated by additive manufacturing selective laser melting process journal June 2018
Cast near-eutectic Al-12.5 wt.% Ce alloy with high coarsening and creep resistance journal November 2019
Repurposing the θ (Al2Cu) phase to simultaneously increase the strength and ductility of an additively manufactured Al–Cu alloy journal August 2022
An additively manufactured AlCuMnZr alloy microstructure and tensile mechanical properties journal August 2020
Influence of Process Parameters on the Quality of Aluminium Alloy EN AW 7075 Using Selective Laser Melting (SLM) journal January 2016
Microstructure and properties of additively manufactured Al–Ce–Mg alloys journal March 2021
Nonequilibrium solidification in undercooled Ti45Al55 melts journal April 2008
Model for solute redistribution during rapid solidification journal February 1982
The metallurgy and processing science of metal additive manufacturing journal March 2016
Towards high-temperature applications of aluminium alloys enabled by additive manufacturing journal July 2021
Physical processes in fusion welding journal January 1995
Metal Additive Manufacturing: A Review of Mechanical Properties journal July 2016
Crystallographic texture engineering through novel melt strategies via electron beam melting: Inconel 718 journal October 2014
Site specific control of crystallographic grain orientation through electron beam additive manufacturing journal November 2014
Dendritic growth journal January 1994
The .DELTA. to .GAMMA. Transition in Fe-Cr-Ni Alloys during Laser Treatment. journal January 1997
Solidification Phase and Microstructure Selection Maps for Fe-Cr-Ni Alloys. journal January 1999
Thermal Conductivity of Aluminum Alloys—A Review journal April 2023
Non-Equilibrium Solidification of Undercooled Metallic Melts journal June 2014

Similar Records

Microstructure and properties of a high temperature Al–Ce–Mn alloy produced by additive manufacturing
Journal Article · Thu Jul 09 00:00:00 EDT 2020 · Acta Materialia · OSTI ID:1649496

Heterogeneous phase transformation pathways in additively manufactured Al-Ce-Mn alloys
Journal Article · Thu Dec 15 23:00:00 EST 2022 · Journal of Alloys and Compounds · OSTI ID:1909148

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

Related Subjects