Evaluation of an Al-Ce alloy for laser additive manufacturing

A. Plotkowski; O. Rios; N. Sridharan; Z. Sims; K. Unocic; R. T. Ott; R. R. Dehoff; S. S. Babu

doi:10.1016/j.actamat.2016.12.065

Evaluation of an Al-Ce alloy for laser additive manufacturing

A. Plotkowski, O. Rios, N. Sridharan, Z. Sims, K. Unocic, R. T. Ott, R. R. Dehoff, S. S. Babu

Research output: Contribution to journal › Article › peer-review

153 Scopus citations

Abstract

This study focuses on the development of a design methodology for alloys in AM, using a newly developed Al-Ce alloy as an initial case study. To evaluate the candidacy of this system for directed energy deposition processes, single-line laser melts were made on cast Al-12Ce plates using three different beam velocities (100, 200, and 300 mm/min). The microstructure was evaluated in the as-melted and heat treated conditions (24 h at 300 °C). An extremely fine microstructure was observed within the melt pools, evolving from eutectic at the outer solid-liquid boundaries to a primary Al FCC dendritic/cellular structure nearer the melt-pool centerline. The observed microstructures were rationalized through the construction of a microstructure selection map for the Al-Ce binary system, which will be used to enable future alloy design. Interestingly, the heat treated samples exhibited no microstructural coarsening.

Original language	English
Pages (from-to)	507-519
Number of pages	13
Journal	Acta Materialia
Volume	126
DOIs	https://doi.org/10.1016/j.actamat.2016.12.065
State	Published - Mar 1 2017

Funding

This manuscript has been authored by UT-Battelle, LLC under Contract No. DE-AC05-00OR22725 with the U.S. Department of Energy. The United States Government retains and the publisher, by accepting the article for publication, acknowledges that the United States Government retains a non-exclusive, paid-up, irrevocable, world-wide license to publish or reproduce the published form of this manuscript, or allow others to do so, for United States Government purposes. The Department of Energy will provide public access to these results of federally sponsored research in accordance with the DOE Public Access Plan (<http://energy.gov/downloads/doe-public-access-plan>). This research was sponsored by the Critical Materials Institute, and Energy Innovation Hub funded by U.S. Department of Energy, Office of Energy Efficiency and Renewable Energy, Advanced Manufacturing Office.

Funders	Funder number
Critical Materials Institute, and Energy Innovation Hub
DOE Public Access Plan
United States Government
U.S. Department of Energy
Advanced Manufacturing Office
Office of Energy Efficiency and Renewable Energy

Keywords

Additive manufacturing
Al alloys
Microstructure control
Microstructure modeling

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1016/j.actamat.2016.12.065

Cite this

@article{e83973080fd34d11ba2b950ec3a5d723,

title = "Evaluation of an Al-Ce alloy for laser additive manufacturing",

abstract = "This study focuses on the development of a design methodology for alloys in AM, using a newly developed Al-Ce alloy as an initial case study. To evaluate the candidacy of this system for directed energy deposition processes, single-line laser melts were made on cast Al-12Ce plates using three different beam velocities (100, 200, and 300 mm/min). The microstructure was evaluated in the as-melted and heat treated conditions (24 h at 300 °C). An extremely fine microstructure was observed within the melt pools, evolving from eutectic at the outer solid-liquid boundaries to a primary Al FCC dendritic/cellular structure nearer the melt-pool centerline. The observed microstructures were rationalized through the construction of a microstructure selection map for the Al-Ce binary system, which will be used to enable future alloy design. Interestingly, the heat treated samples exhibited no microstructural coarsening.",

keywords = "Additive manufacturing, Al alloys, Microstructure control, Microstructure modeling",

author = "A. Plotkowski and O. Rios and N. Sridharan and Z. Sims and K. Unocic and Ott, {R. T.} and Dehoff, {R. R.} and Babu, {S. S.}",

note = "Publisher Copyright: {\textcopyright} 2016 Acta Materialia Inc.",

year = "2017",

month = mar,

day = "1",

doi = "10.1016/j.actamat.2016.12.065",

language = "English",

volume = "126",

pages = "507--519",

journal = "Acta Materialia",

issn = "1359-6454",

publisher = "Elsevier",

}

TY - JOUR

T1 - Evaluation of an Al-Ce alloy for laser additive manufacturing

AU - Plotkowski, A.

AU - Rios, O.

AU - Sridharan, N.

AU - Sims, Z.

AU - Unocic, K.

AU - Ott, R. T.

AU - Dehoff, R. R.

AU - Babu, S. S.

PY - 2017/3/1

Y1 - 2017/3/1

N2 - This study focuses on the development of a design methodology for alloys in AM, using a newly developed Al-Ce alloy as an initial case study. To evaluate the candidacy of this system for directed energy deposition processes, single-line laser melts were made on cast Al-12Ce plates using three different beam velocities (100, 200, and 300 mm/min). The microstructure was evaluated in the as-melted and heat treated conditions (24 h at 300 °C). An extremely fine microstructure was observed within the melt pools, evolving from eutectic at the outer solid-liquid boundaries to a primary Al FCC dendritic/cellular structure nearer the melt-pool centerline. The observed microstructures were rationalized through the construction of a microstructure selection map for the Al-Ce binary system, which will be used to enable future alloy design. Interestingly, the heat treated samples exhibited no microstructural coarsening.

AB - This study focuses on the development of a design methodology for alloys in AM, using a newly developed Al-Ce alloy as an initial case study. To evaluate the candidacy of this system for directed energy deposition processes, single-line laser melts were made on cast Al-12Ce plates using three different beam velocities (100, 200, and 300 mm/min). The microstructure was evaluated in the as-melted and heat treated conditions (24 h at 300 °C). An extremely fine microstructure was observed within the melt pools, evolving from eutectic at the outer solid-liquid boundaries to a primary Al FCC dendritic/cellular structure nearer the melt-pool centerline. The observed microstructures were rationalized through the construction of a microstructure selection map for the Al-Ce binary system, which will be used to enable future alloy design. Interestingly, the heat treated samples exhibited no microstructural coarsening.

KW - Additive manufacturing

KW - Al alloys

KW - Microstructure control

KW - Microstructure modeling

UR - http://www.scopus.com/inward/record.url?scp=85009742359&partnerID=8YFLogxK

U2 - 10.1016/j.actamat.2016.12.065

DO - 10.1016/j.actamat.2016.12.065

M3 - Article

AN - SCOPUS:85009742359

SN - 1359-6454

VL - 126

SP - 507

EP - 519

JO - Acta Materialia

JF - Acta Materialia

ER -

Evaluation of an Al-Ce alloy for laser additive manufacturing

Abstract

Funding

Keywords

UN SDGs

Access to Document

Other files and links

Fingerprint

Cite this