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Title: Synthesis and microstructure of electrodeposited and sputtered nanotwinned face-centered-cubic metals

The remarkable properties of nanotwinned (NT) face-centered-cubic (fcc) metals arise directly from twin boundaries, the structures of which can be initially determined by growth twinning during the deposition process. When we understand the synthesis process and its relation to the resulting microstructure, and ultimately to material properties, we realize how key it is to understanding and utilizing these materials. Furthermore, our article presents recent studies on electrodeposition and sputtering methods that produce a high density of nanoscale growth twins in fcc metals. Nanoscale growth twins tend to form spontaneously in monolithic and alloyed fcc metals with lower stacking-fault energies, while engineered approaches are necessary for fcc metals with higher stacking-fault energies. Finally, growth defects and other microstructural features that influence nanotwin behavior and stability are introduced here, and future challenges in fabricating NT materials are highlighted.
Authors:
 [1] ;  [2] ;  [3] ;  [4]
  1. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
  2. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  3. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  4. Chinese Academy of Sciences (CAS), Beijing (China)
Publication Date:
OSTI Identifier:
1304710
Report Number(s):
LA-UR--15-26739
Journal ID: ISSN 0883-7694; applab
Grant/Contract Number:
AC52-06NA25396; AC04-94AL85000; SC0010482; AC52-07NA27344; FWP 06SCPE401; W-7405-ENG-36
Type:
Accepted Manuscript
Journal Name:
MRS Bulletin
Additional Journal Information:
Journal Volume: 41; Journal Issue: 04; Journal ID: ISSN 0883-7694
Publisher:
Materials Research Society
Research Org:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org:
USDOE National Nuclear Security Administration (NNSA); USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE electrodeposition; grain boundaries; metal; microstructure; sputtering