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Title: Small-angle neutron scattering analysis of Mn–C clusters in high-manganese 18Mn–0.6C steel

Nanometer-scale particles (Mn–C clusters) were analyzed quantitatively using small-angle neutron scattering in 18Mn–0.6C (wt.%) austenite high-manganese steel. The size, number, and volume fraction of the particles were determined as a function of strain (0, 5, 15, 30, 45, 50%) at different temperatures (25 and 100 °C). The diameter of the cluster ranges from 2 to 14 nm in the matrix. The total volume fraction of the cluster significantly increases from 2.7 × 10{sup −6} to 8.7 × 10{sup −6} as the strain increases. Such clustering phenomenon is correlated to the serration behavior under loading in high-manganese steels. - Highlights: • Show Mn-C clustering as function of strain in 18Mn-0.6C TWIP steel. • Determine the size, number, and volume fraction of clusters quantitatively. • Compare the clustering behavior at 25 and 100 °C.
Authors:
 [1] ;  [2] ;  [1] ;  [1] ;  [3]
  1. Neutron Science Division, Korea Atomic Energy Research Institute, Daejeon, 305-353 (Korea, Republic of)
  2. (Korea, Republic of)
  3. Department of Materials Science and Engineering, Yonsei University, 120-749 (Korea, Republic of)
Publication Date:
OSTI Identifier:
22403560
Resource Type:
Journal Article
Resource Relation:
Journal Name: Materials Characterization; Journal Volume: 96; Other Information: Copyright (c) 2014 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; AUSTENITE; CARBON; COMPARATIVE EVALUATIONS; LOADING; MANGANESE; MANGANESE STEELS; MATRIX MATERIALS; NANOPARTICLES; NEUTRON DIFFRACTION; SMALL ANGLE SCATTERING; STRAIN AGING; STRAINS; TEMPERATURE DEPENDENCE