The solidification characteristics of laser surface-remelted Fe-12Cr-nC alloys
Journal Article
·
· Metallurgical and Materials Transactions. A, Physical Metallurgy and Materials Science
- Risoe National Lab., Roskilde (Denmark). Materials Research Dept.
- Technical Univ. of Denmark, Lyngby (Denmark). Dept. of Mfg. Engineering
Laser surface remelting experiments have been carried out in Fe-12Cr-nC alloys in order to characterize the effect of growth velocity on the microstructural scale and the mode of solidification. Two types of growth morphologies have been observed: cellular/dendritic at a low carbon content and dendritic at a high carbon content. The existing band of primary spacings for a given solidification condition was characterized and confirmed. A recent analytical expression by Hunt and Lu for cellular and dendritic structures was compared to the experimentally measured primary arm spacings, and a good agreement was obtained. Further, the relationship between the primary spacing and the dendrite-tip radius was also determined and compared to the experimental results using a simple geometrical consideration between the dendrite-tip radius and the primary spacing. Finally, a theoretical microstructural map was constructed and compared to the experimental results. A good agreement between the observed and the calculated phases was obtained.
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 677989
- Journal Information:
- Metallurgical and Materials Transactions. A, Physical Metallurgy and Materials Science, Journal Name: Metallurgical and Materials Transactions. A, Physical Metallurgy and Materials Science Journal Issue: 7 Vol. 30; ISSN 1073-5623; ISSN MMTAEB
- Country of Publication:
- United States
- Language:
- English
Similar Records
Characterization of Solidification Microstructures in Vacuum Arc Remelted Nickel Alloy 718
History-dependent selection of primary cellular/dendritic spacing during unidirectional solidification in aluminum alloys
Interfacial morphology evolution in directionally solidified FeCrAl alloys
Journal Article
·
Mon Apr 15 00:00:00 EDT 2019
· Metallurgical and Materials Transactions. B, Process Metallurgy and Materials Processing Science
·
OSTI ID:22933633
History-dependent selection of primary cellular/dendritic spacing during unidirectional solidification in aluminum alloys
Journal Article
·
Wed Sep 08 00:00:00 EDT 1999
· Acta Materialia
·
OSTI ID:684384
Interfacial morphology evolution in directionally solidified FeCrAl alloys
Journal Article
·
Tue May 15 00:00:00 EDT 2018
· Materials Characterization
·
OSTI ID:22832974