A new etching route for revealing the austenite grain boundaries in an 11.4% Cr precipitation hardening semi-austenitic stainless steel

San Martin, D. and Rivera Diaz del Castillo, P. E J and Peekstok, E. and van der Zwaag, S. (2007) A new etching route for revealing the austenite grain boundaries in an 11.4% Cr precipitation hardening semi-austenitic stainless steel. Materials Characterization, 58 (5). pp. 455-460. ISSN 1044-5803

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Abstract

A detailed metallographic characterization of a precipitation hardening semi-austenitic stainless steel is described. A new etching procedure based on the Lichtenegger and Blöch color etching solution, which is frequently used in duplex stainless steels to differentiate delta ferrite from austenite, has been used to differentiate martensite, austenite and the Chi-phase in this stainless steel. By changing the etching conditions, this etchant now reveals the austenite grain boundaries when the steel is in the austenitic state. Moreover, this solution is able to reveal also the prior austenite grain boundaries when the steel is in its martensitic state. This etching procedure represents a great advantage because it reveals, at the same time, different features of the microstructure.

Item Type:
Journal Article
Journal or Publication Title:
Materials Characterization
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/3100/3104
Subjects:
ID Code:
125440
Deposited By:
Deposited On:
24 May 2018 12:06
Refereed?:
Yes
Published?:
Published
Last Modified:
07 Apr 2020 05:21