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Title: Effects of ternary alloy additions on the microstructure of highly immiscible Cu alloys subjected to severe plastic deformation: An evaluation of the effective temperature model

Abstract

Phase evolution in dilute, strongly immiscible Cu-Mo, Cu-Mo-Ni, and Cu-Mo-Ag alloys during severe plastic deformation at low-temperature has been experimentally investigated. For the Cu95Mo05 alloy, Mo nanoparticles are formed, ~10 nm in diameter, as part of a steady state microstructure, with less than ~1 at.% Mo dissolved in the matrix. Addition of 10 or 20 at.% Ni to this binary alloy results in a significant increase in the Mo solubility, whereas comparable additions of Ag has a corresponding little effect. The steady state microstructures of alloys during ball milling of elemental powders are very similar to those during HPT processing of initially homogeneous solutions. The results are discussed in terms of an effective temperature model. Model MD simulations are presented to help relate the predictions of the effective temperature model to atomistic mechanisms.

Authors:
ORCiD logo [1];  [1]; ORCiD logo [1];  [2];  [3]; ORCiD logo [1];  [1];  [1]
  1. Univ. of Illinois at Urbana-Champaign, IL (United States)
  2. Karlsruhe Inst. of Technology (KIT) (Germany)
  3. Hebrew Univ. of Jerusalem (Israel)
Publication Date:
Research Org.:
Univ. of Illinois at Urbana-Champaign, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1609687
Alternate Identifier(s):
OSTI ID: 1507216
Grant/Contract Number:  
FG02-05ER46217; DEFG02-05ER46217
Resource Type:
Accepted Manuscript
Journal Name:
Acta Materialia
Additional Journal Information:
Journal Volume: 170; Journal Issue: C; Journal ID: ISSN 1359-6454
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; Materials Science; Metallurgy & Metallurgical Engineering; Severe plastic deformation; Forced chemical mixing; Cu ternary alloys; Effective temperature model; Ball milling; High pressure torsion

Citation Formats

Verma, Nisha, Pant, Nirab, Beach, John A., Ivanisenko, Julia, Ashkenazy, Yinon, Dillon, Shen, Bellon, Pascal, and Averback, Robert S. Effects of ternary alloy additions on the microstructure of highly immiscible Cu alloys subjected to severe plastic deformation: An evaluation of the effective temperature model. United States: N. p., 2019. Web. doi:10.1016/j.actamat.2019.03.023.
Verma, Nisha, Pant, Nirab, Beach, John A., Ivanisenko, Julia, Ashkenazy, Yinon, Dillon, Shen, Bellon, Pascal, & Averback, Robert S. Effects of ternary alloy additions on the microstructure of highly immiscible Cu alloys subjected to severe plastic deformation: An evaluation of the effective temperature model. United States. https://doi.org/10.1016/j.actamat.2019.03.023
Verma, Nisha, Pant, Nirab, Beach, John A., Ivanisenko, Julia, Ashkenazy, Yinon, Dillon, Shen, Bellon, Pascal, and Averback, Robert S. Wed . "Effects of ternary alloy additions on the microstructure of highly immiscible Cu alloys subjected to severe plastic deformation: An evaluation of the effective temperature model". United States. https://doi.org/10.1016/j.actamat.2019.03.023. https://www.osti.gov/servlets/purl/1609687.
@article{osti_1609687,
title = {Effects of ternary alloy additions on the microstructure of highly immiscible Cu alloys subjected to severe plastic deformation: An evaluation of the effective temperature model},
author = {Verma, Nisha and Pant, Nirab and Beach, John A. and Ivanisenko, Julia and Ashkenazy, Yinon and Dillon, Shen and Bellon, Pascal and Averback, Robert S.},
abstractNote = {Phase evolution in dilute, strongly immiscible Cu-Mo, Cu-Mo-Ni, and Cu-Mo-Ag alloys during severe plastic deformation at low-temperature has been experimentally investigated. For the Cu95Mo05 alloy, Mo nanoparticles are formed, ~10 nm in diameter, as part of a steady state microstructure, with less than ~1 at.% Mo dissolved in the matrix. Addition of 10 or 20 at.% Ni to this binary alloy results in a significant increase in the Mo solubility, whereas comparable additions of Ag has a corresponding little effect. The steady state microstructures of alloys during ball milling of elemental powders are very similar to those during HPT processing of initially homogeneous solutions. The results are discussed in terms of an effective temperature model. Model MD simulations are presented to help relate the predictions of the effective temperature model to atomistic mechanisms.},
doi = {10.1016/j.actamat.2019.03.023},
journal = {Acta Materialia},
number = C,
volume = 170,
place = {United States},
year = {Wed May 15 00:00:00 EDT 2019},
month = {Wed May 15 00:00:00 EDT 2019}
}

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Works referencing / citing this record:

Evolution of Nb oxide nanoprecipitates in Cu during reactive mechanical alloying
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