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Title: Effect of reinforcement phase on the mechanical property of tungsten nanocomposite synthesized by spark plasma sintering

Nanostructured tungsten composites were fabricated by spark plasma sintering of nanostructured composite powders. The composite powders, which were synthesized by mechanical milling of tungsten and Ni-based alloy powders, are comprised of alternating layers of tungsten and metallic glass several hundred nanometers in size. The mechanical behavior of the nanostructured W composite is similar to pure tungsten, however, in contrast to monolithic pure tungsten, some macroscopic compressive plasticity accompanies the enhanced maximum strength up to 2.4 GPa by introducing reinforcement. As a result, we have found that the mechanical properties of the composites strongly depend on the uniformity of the nano-grained tungsten matrix and reinforcement phase distribution.
Authors:
 [1] ;  [2] ;  [3] ;  [4] ;  [5] ;  [2]
  1. Kongju National Univ., Cheonan (Korea)
  2. Korea Institute of Industrial Technology, Incheon (Korea)
  3. Ames Lab., Ames, IA (United States)
  4. IFW Dresden, Dresden (Germany)
  5. IFW Dresden, Dresden (Germany); TU Dresden, Dresden (Germany)
Publication Date:
OSTI Identifier:
1235584
Report Number(s):
IS-J--8886
Journal ID: ISSN 0263-4368; PII: S0263436815300834
Grant/Contract Number:
2014-2020-103910; AC02-07CH11358
Type:
Accepted Manuscript
Journal Name:
International Journal of Refractory and Hard Metals
Additional Journal Information:
Journal Volume: 54; Journal Issue: C; Journal ID: ISSN 0263-4368
Publisher:
Elsevier
Research Org:
Ames Laboratory (AMES), Ames, IA (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE tungsten; nanocrystalline metals; metallic glasses; mechanical properties; spark plasma sintering; mechanical alloying and milling