NDLI: Thermal analysis of ball-milled Fe–14Cr–3W–0.4Ti–0.25Y$_{2}$O$_{3}$ ferritic steel powder : Evidence for contamination from the air

Content Provider	Springer Nature Link
Author	Mihalache, Valentina
Copyright Year	2016
Abstract	The contamination from the air (the identification of the impurity phases and their thermal evolution) of Fe–14Cr–3W–0.4Ti–0.25Y$_{2}$O$_{3}$ oxide dispersion-strengthened ferritic steel powders ball-milled for different times was evidenced by thermal analysis in correlation with X-ray diffraction and scanning electron microscopy. The powders loaded under an argon atmosphere and milled up to 170 h with and without interruption of the milling process were compared. A steady state of Fe–Cr alloying was reached within the first 12 h. The reflections corresponding to a new phase with an fcc-CrN structure were found in XRD patterns of powders milled for a long time with interruption. The differential thermal analysis of powders milled over 12 h with interruption shows an exothermic peak at 625.5–653 °C, ascribed to the coarsening of the fcc-CrN, and an endothermic reaction above 1000 °C accompanied by a mass loss in thermogravimetric analysis. (Cr,Fe)$_{2}$O$_{3}$ and retained austenite were also found upon the heating of as-milled (with interruption) powders to different temperatures. The endothermic feature was associated with the decomposition of CrN accompanied by the degassing of N$_{2}$. The observed phenomenon was explained to be the manifestation of contamination with nitrogen and oxygen from the air during the milling; the rate of contamination with nitrogen was estimated to be 0.011 mass% h$^{−1}$. The contamination level depends on the degree of alloying at the moment of the interruption of milling process. The contamination of the powders milled without interruption of milling process was insignificant. The experimental conditions described in this work can be further developed for the removal of impurities (e.g. nitrogen, nitrides, oxides) from alloyed ferritic steel powders.
Starting Page	1179
Ending Page	1192
Page Count	14
File Format	PDF
ISSN	13886150
Journal	Journal of thermal analysis
Volume Number	124
Issue Number	3
e-ISSN	15882926
Language	English
Publisher	Springer Netherlands
Publisher Date	2016-02-10
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	ODS ferritic steel Ball milling Powder contamination Microstructure Thermal analysis Nitrogen degassing Physical Chemistry Analytical Chemistry Polymer Sciences Inorganic Chemistry Measurement Science and Instrumentation
Content Type	Text
Resource Type	Article
Subject	Physical and Theoretical Chemistry Condensed Matter Physics

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Processing and microstructure characterisation of oxide dispersion strengthened Fe-14Cr-0.4Ti-0.25Y 2 O 3 ferritic steels fabricated by spark plasma sintering

Effects of thermal and thermo-mechanical treatments on Fe-14Cr-ODS steels microstructure.

Influence of chemical composition on the microstructure and phase transformations of Fe-14Cr ferritic steels

Formation and Microstructural Evolution of Ferritic ODS Steel Powders during Mechanical Alloying.

Microstructure characterization and thermal stability of the ball milled iron powders

Synthesis of α-Fe$_{2}$O$_{3}$ nanoparticles by dry high-energy ball-milling method and investigation of their catalytic activity

On ball-milled ODS ferritic steel recrystallization: From as-milled powder particles to consolidated state

Effect of Heat-Treatment on the Elevated Temperature Compression and Compressive Creep Properties of Fe-14Cr Ferritic Oxide Dispersion Strengthened (ODS) Steel

Powder Particle Size Effects on Microstructure and Mechanical Properties of Mechanically Alloyed ODS Ferritic Steels

Thermal analysis of ball-milled Fe–14Cr–3W–0.4Ti–0.25Y$_{2}$O$_{3}$ ferritic steel powder : Evidence for contamination from the air

Similar Documents

Processing and microstructure characterisation of oxide dispersion strengthened Fe-14Cr-0.4Ti-0.25Y 2 O 3 ferritic steels fabricated by spark plasma sintering

Effects of thermal and thermo-mechanical treatments on Fe-14Cr-ODS steels microstructure.

Influence of chemical composition on the microstructure and phase transformations of Fe-14Cr ferritic steels

Formation and Microstructural Evolution of Ferritic ODS Steel Powders during Mechanical Alloying.

Microstructure characterization and thermal stability of the ball milled iron powders

Synthesis of α-Fe$_{2}$O$_{3}$ nanoparticles by dry high-energy ball-milling method and investigation of their catalytic activity

On ball-milled ODS ferritic steel recrystallization: From as-milled powder particles to consolidated state

Effect of Heat-Treatment on the Elevated Temperature Compression and Compressive Creep Properties of Fe-14Cr Ferritic Oxide Dispersion Strengthened (ODS) Steel

Powder Particle Size Effects on Microstructure and Mechanical Properties of Mechanically Alloyed ODS Ferritic Steels

Thermal analysis of ball-milled Fe–14Cr–3W–0.4Ti–0.25Y$_{2}$O$_{3}$ ferritic steel powder : Evidence for contamination from the air