Abnormal grain growth suppression in Al alloys

Hales, Stephen J.; Claytor, Harold D.; Alexa, Joel A.

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Title: Abnormal grain growth suppression in Al alloys

Abstract

The present invention provides a process for suppressing abnormal grain growth in friction stir welded aluminum alloys by inserting an intermediate annealing treatment (“IAT”) after the welding step on the article. The IAT may be followed by a solution heat treatment (SHT) on the article under effectively high solution heat treatment conditions. In at least some embodiments, a deformation step is conducted on the article under effective spin-forming deformation conditions or under effective superplastic deformation conditions. The invention further provides a welded article having suppressed abnormal grain growth, prepared by the process above. Preferably the article is characterized with greater than about 90% reduction in area fraction abnormal grain growth in any friction-stir-welded nugget.

Inventors:: Hales, Stephen J.; Claytor, Harold D.; Alexa, Joel A.

Issue Date:: 2023-02-14

Research Org.:: National Aeronautics and Space Administration (NASA), Washington, DC (United States)

Sponsoring Org.:: USDOE

OSTI Identifier:: 1987117

Patent Number(s):: 11578395

Application Number:: 16/042,288

Assignee:: United States of America as Represented by the Administration of NASA (Washington, DC)

DOE Contract Number:: NNL07AA00B

Resource Type:: Patent

Resource Relation:: Patent File Date: 07/23/2018

Country of Publication:: United States

Language:: English

Citation Formats


                    Hales, Stephen J., Claytor, Harold D., and Alexa, Joel A. Abnormal grain growth suppression in Al alloys.  United States: N. p., 2023. 
        Web.

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                    Hales, Stephen J., Claytor, Harold D., & Alexa, Joel A. Abnormal grain growth suppression in Al alloys.  United States.

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                    Hales, Stephen J., Claytor, Harold D., and Alexa, Joel A. Tue .  
        "Abnormal grain growth suppression in Al alloys".  United States.  https://www.osti.gov/servlets/purl/1987117.

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@article{osti_1987117,

  title        = {Abnormal grain growth suppression in Al alloys},

  author       = {Hales, Stephen J. and Claytor, Harold D. and Alexa, Joel A.},

  abstractNote = {The present invention provides a process for suppressing abnormal grain growth in friction stir welded aluminum alloys by inserting an intermediate annealing treatment (“IAT”) after the welding step on the article. The IAT may be followed by a solution heat treatment (SHT) on the article under effectively high solution heat treatment conditions. In at least some embodiments, a deformation step is conducted on the article under effective spin-forming deformation conditions or under effective superplastic deformation conditions. The invention further provides a welded article having suppressed abnormal grain growth, prepared by the process above. Preferably the article is characterized with greater than about 90% reduction in area fraction abnormal grain growth in any friction-stir-welded nugget.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {2023},

  month        = {2}

}

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Works referenced in this record:

Aluminum-lithium alloys and process therefor
patent, April 1990

Cho, Chul W.
US Patent Document 4,915,747
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/4915747

Al-Cu-Li-Mg-Ag-Mn-Zr alloy for use as structural members requiring high strength and high fracture toughness
patent, June 2007

Cho, Alex
US Patent Document 7,229,509
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/7229509

Stability of nugget zone grain structures in high strength Al-alloy friction stir welds during solution treatment
journal, April 2003

Hassan, Kh. A. A.; Norman, A. F.; Price, D. A.
Acta Materialia, Vol. 51, Issue 7
https://doi.org/10.1016/S1359-6454(02)00598-0

Effects of post-weld heat treatment on microstructure and mechanical properties of friction stir welded joints of 2219-O aluminium alloy
journal, January 2006

Feng, J. C.; Chen, Y. C.; Liu, H. J.
Materials Science and Technology, Vol. 22, Issue 1
https://doi.org/10.1179/174328406X79298

Aluminum-lithium alloys and method of making same
patent, May 1990

Cho, Chul W.
US Patent Document 4,921,548
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/4921548

Analytical modelling of grain growth in metals and alloys in the presence of growing and dissolving precipitates—II. Abnormal grain growth
journal, July 1995

Andersen, I.; Grong, Ø.; Ryum, N.
Acta Metallurgica et Materialia, Vol. 43, Issue 7
https://doi.org/10.1016/0956-7151(94)00489-5

Unrecrystallized aluminum plate product by ramp annealing
patent, August 1990

Cho, Alex
US Patent Document 4,946,517
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/4946517

Aluminum-lithium alloys and method of making the same
patent, November 1991

Rioja, Roberto J.; Bowers, Joel A.; James, R. Steve
US Patent Document 5,066,342
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/5066342

Low density high strength Al-Li alloy
patent, March 1993

Cho, Alex; Pickens, Joseph R.
US Patent Document 5,198,045
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/5198045

Cube recrystallization texture—experimental results and modeling
journal, November 1998

Doherty, Roger D.; Chen, Li-Chun; Samajdar, Indradev
Materials Science and Engineering: A, Vol. 257, Issue 1
https://doi.org/10.1016/S0921-5093(98)00821-1

Continuous dynamic recrystallization during friction stir welding of high strength aluminum alloys
journal, September 2000

Jata, K. V.; Semiatin, S. L.
Scripta Materialia, Vol. 43, Issue 8
https://doi.org/10.1016/S1359-6462(00)00480-2

Modeling texture evolution during recrystallization in aluminum
journal, November 2008

Brahme, Abhijit; Fridy, Joseph; Weiland, Hasso
Modelling and Simulation in Materials Science and Engineering, Vol. 17, Issue 1
https://doi.org/10.1088/0965-0393/17/1/015005

Low density, high strength Al-Li alloy having high toughness at elevated temperatures
patent, February 1995

Cho, Alex
US Patent Document 5,389,165
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/5389165

Abnormal grain growth in friction stir processed alloys
journal, March 2008

Charit, I.; Mishra, R. S.
Scripta Materialia, Vol. 58, Issue 5
https://doi.org/10.1016/j.scriptamat.2007.09.052

Method to Improve Properties of Aluminum Alloys Processed by Solid State Joining
patent-application, March 2006

Sankaran, Krishnan K.; Lederich, Richard J.; Slattery, Kevin T.
US Patent Application 10/939528; 20060054252
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/20060054252

A unified theory of recovery, recrystallization and grain growth, based on the stability and growth of cellular microstructures—I. The basic model
journal, October 1997

Humphreys, F. J.
Acta Materialia, Vol. 45, Issue 10
https://doi.org/10.1016/S1359-6454(97)00070-0