Nitrogen addition to bcc-Fe by attrition milling
Journal Article
·
· Materials Science Forum
- Albany Research Center
To enhance the nitrogen solubility in bcc-Fe, iron powder and blends of iron and iron nitride powders were attrition-milled in nitrogen gas. X-ray diffraction and Moessbauer spectroscopy were used to characterize the milled microstructure and to characterize the nitrogen distribution. After processing for 150 hours, the infused nitrogen was determined to be interstitial (locally deforming the bcc-Fe lattice to a bct-Fe lattice) and associated with the outer layer of the bcc-Fe nanograin. Nitrogen stabilized the milled grain structure but at elevated temperatures rapidly came to thermodynamical equilibrium, transforming from bcc-Fe(N) to bcc-Fe and Fe{sub 4}N.
- Research Organization:
- Albany Research Center, Albany, OR (US)
- Sponsoring Organization:
- USDOE Office of Fossil Energy (FE) (US)
- OSTI ID:
- 759226
- Report Number(s):
- DOE/ARC-1999-001
- Journal Information:
- Materials Science Forum, Journal Name: Materials Science Forum Vol. 318-320; ISSN 0255-5476
- Publisher:
- Trans Tech Publications, Switzerland
- Country of Publication:
- United States
- Language:
- English
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