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A new approach to etching low‐carbon microalloyed steels to reveal prior austenite grain boundaries and the dual‐phase microstructure
Author(s) -
RodriguezGaleano Karol F.,
RomanoAcosta Luis F.,
Palmiere Eric J.,
Rainforth W. Mark
Publication year - 2023
Publication title -
journal of microscopy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.569
H-Index - 111
eISSN - 1365-2818
pISSN - 0022-2720
DOI - 10.1111/jmi.13153
Subject(s) - austenite , grain boundary , microstructure , materials science , metallurgy , phase (matter) , microalloyed steel , hydrochloric acid , etching (microfabrication) , carbon fibers , sodium , composite material , layer (electronics) , chemistry , organic chemistry , composite number
A modification to picric acid solutions has been undertaken to reveal the prior‐austenite grain boundaries in microalloyed steels as a result of elemental segregation. It has been found the maximum addition of sodium dodecyl sulphate plus hydrochloric acid to fully reveal both the prior austenite grain boundaries and the final post‐processed structures in these steels.