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

Journal Article · Wed Oct 15 00:00:00 EDT 2014 · Materials Characterization

DOI:https://doi.org/10.1016/J.MATCHAR.2014.07.010· OSTI ID:22403560

Kang, Mihyun ^[1]; Shin, Eunjoo ^[1]; Woo, Wanchuck ^[1]; Lee, Young-Kook ^[2]

---

1. Neutron Science Division, Korea Atomic Energy Research Institute, Daejeon, 305-353 (Korea, Republic of)
2. Department of Materials Science and Engineering, Yonsei University, 120-749 (Korea, Republic of)

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.

• OSTI ID: 22403560
• Journal Information: Materials Characterization, Vol. 96; Other Information: Copyright (c) 2014 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); ISSN 1044-5803
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
AUSTENITE
CARBON
COMPARATIVE EVALUATIONS
LOADING
MANGANESE
MANGANESE STEELS
MATRIX MATERIALS
NANOPARTICLES
NEUTRON DIFFRACTION
SMALL ANGLE SCATTERING
STRAIN AGING
STRAINS
TEMPERATURE DEPENDENCE