SYMPOSIA PAPER Published: 01 April 2012
STP153220120008

The Effect of Si on the Precipitates for Nb Bearing High Purity Ferritic Stainless Steel

Source

The effect of Si on the precipitation of the Laves phase in high purity 17Cr–0.5Nb ferritic stainless steel was investigated. Precipitation was observed using a scanning electron microscope and transmission electron microscope. Quantitative analysis of the amount of precipitates as Laves phase was performed. The precipitation rate of the Laves phase and the equilibrium amount of precipitates of the Laves phase increased with the amount of Si. A Si peak was detected in the Laves phase in 0.5Si steel by energy dispersive X-ray spectrometer analysis. It was revealed that precipitation of the Laves phase was promoted and the chemical composition of the Laves phase was changed by the addition of Si.

Author Information

Ito, Masatoshi
Kyushu Univ., Fukuoka, JP
Honda, Yuma
Kyushu Univ., Fukuoka, JP
Aramaki, Masatoshi
Kyushu Univ., Fukuoka, JP
Kato, Yasushi
JFE Steel Corporation, Chiba, JP
Furukimi, Osamu
Kyushi Univ., Fukuoka, JP
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Details
Developed by Committee: D02
Pages: 107–112
DOI: 10.1520/STP153220120008
ISBN-EB: 978-0-8031-9417-5
ISBN-13: 978-0-8031-7518-1