NDLI: Determination of Mo-Rich Laves-Phase in Weld Metals of a Creep-Resistant 9% Cr-Steel Using Light Optical Microscopy

Content Provider	Springer Nature Link
Author	Pahr, H. Rojacz, H. Baumgartner, S.
Copyright Year	2017
Abstract	Creep-resistant 9% Cr-steels feature different phases in their weld metal microstructure; especially after creep-rupture testing. Laves-Phase in such alloying concepts is widely studied, but there is still a need for a simple identification technique utilizing light optical microscopy. The Lichtenegger–Bloech color tint etchant was utilized to contrast the weld metals microstructure in as-welded condition, after post-weld heat treatment and creep-rupture tested. Proof of the presence of Laves-Phase after creep-rupture tests in the weld metal of a 9% Cr-steel GX13CrMoCoVNbNB9-2-1 (CB2) was performed using Lichtenegger–Bloech and light optical microscopy. To validate Laves-Phase within the analyzed microstructure, scanning electron microscopy and energy dispersive x-ray spectroscopy were performed. For a thorough analysis, phase analysis was done in selected regions of interest. The results show that the Laves-Phase in this type of steel can be easily contrasted and quantified at comparatively low lateral resolutions by Lichtenegger–Bloech, with no further need of analysis required.
Starting Page	352
Ending Page	359
Page Count	8
File Format	PDF
ISSN	21929262
Journal	Metallography, Microstructure, and Analysis
Volume Number	6
Issue Number	4
e-ISSN	21929270
Language	English
Publisher	Springer US
Publisher Date	2017-06-29
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Metallography Etching technique Laves-Phase Light optical microscopy Creep-resistant 9% Cr-steel Metallic Materials Characterization and Evaluation of Materials Structural Materials Surfaces and Interfaces, Thin Films Nanotechnology
Content Type	Text
Resource Type	Article
Subject	Metals and Alloys

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