Metallographic screening of grain boundary engineered type 304 austenitic stainless steel

Journal Article · Fri Aug 15 00:00:00 EDT 2014 · Materials Characterization

DOI:https://doi.org/10.1016/J.MATCHAR.2014.05.016· OSTI ID:22403523

Hanning, F., E-mail: [e-mail]; Engelberg, D.L., E-mail: [e-mail]

An electrochemical etching method for the identification of grain boundary engineered type 304 austenitic stainless steel microstructures is described. The method can be applied for rapid microstructure screening to complement electron backscatter diffraction analysis. A threshold parameter to identify grain boundary engineered microstructure is proposed, and the application of metallographic etching for characterising the degree of grain boundary engineering discussed. - Highlights: • As-received (annealed) and grain boundary engineered microstructures were compared. • Electro-chemical polarisation in nitric acid solutions was carried out. • A metallographic screening method has been developed. • The screening method complements EBSD analysis for microstructure identification.

• OSTI ID: 22403523
• Journal Information: Materials Characterization, Vol. 94; 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
BACKSCATTERING
COMPARATIVE EVALUATIONS
ELECTROCHEMISTRY
ELECTRON DIFFRACTION
ETCHING
GRAIN BOUNDARIES
METALLOGRAPHY
POLARIZATION
STAINLESS STEEL-304