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

Patent ·
OSTI ID:1637860
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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 ≤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.
Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC05-00OR22725; AC02-07CH11358
Assignee:
UT-Battelle, LLC (Oak Ridge, TN); University of Tennessee Research Foundation (Knoxville, TN); Iowa State University Research Foundation, Inc. (Ames, IA); Eck Industries Incorporated (Manitowoe, WI)
Patent Number(s):
10,584,403
Application Number:
15/650,743
OSTI ID:
1637860
Country of Publication:
United States
Language:
English

References (12)

Evaluation of an Al-Ce alloy for laser additive manufacturing journal March 2017
On the Selective Laser Melting (SLM) of the AlSi10Mg Alloy: Process, Microstructure, and Mechanical Properties journal January 2017
Cerium-Based, Intermetallic-Strengthened Aluminum Casting Alloy: High-Volume Co-product Development journal May 2016
Characterization of Near Net-Shape Castable Rare Earth Modified Aluminum Alloys for High Temperature Application book January 2016
The microstructure and mechanical properties of unidirectionally solidified Al−Si alloys journal June 1989
Effect of high power diode laser surface melting on wear resistance of magnesium alloys journal January 2006
Mechanical Properties of Nanometric Al2O3 Particulate-Reinforced Al-Al11Ce3 Composites Produced by Friction Stir Processing journal January 2010
Improvement in wear resistance of hyper-eutectic AlSi cast alloy by laser surface remelting journal June 2003
Production of glassy metallic layers by laser surface treatment journal February 2003
Corrigendum to “Evaluation of an Al-Ce alloy for additive manufacturing” [Acta Mater. 126 (2017) 507–519] journal October 2018
Characterization and wear resistance of laser surface melting AZ91D alloy journal May 2008
Effect of substituting cerium-rich mischmetal with lanthanum on microstructure and mechanical properties of die-cast Mg–Al–RE alloys journal August 2009

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36 MATERIALS SCIENCE