INVESTIGATION ON INFLUENCE OF Co、Al ON MICROSTRUCTURES OF SECONDARY-HARDENING STEEL BY M?SSBAUER SPECTROSCOPY

Abstract

Abstract: The influence of Co，Al on the microstructures of high Ni-Co secondary-hardening steel is studied by M?ssbauer spectroscopy．Results show that distribution of alloying elements Ni，Cr，Mo are influenced by mass fraction of Co in martensite．Both Co and Al elements promote the translation of austenite to martensite during quenching，the amount of austenite decreases with increasing mass of fraction of Co or Al in steel，and Co or Al element also promotes the formation of alloying carbide during tempering，the quantity carbide increases with increasing mass of fraction of Co or Al in steel．

Key words: Hyperfine-field Alloying element distribution Influence of Co or Al on the microstructures of high Ni-Co secondary-hardening steel, M?ssbauer spectrum, envelope algorithm, Instantaneous frequency estimation, mode mixing, EMD

CLC Number:

TG142.33

Liu Guili;Zhang Guoying;Zeng Meiguang;Qian Cunfu. INVESTIGATION ON INFLUENCE OF Co、Al ON MICROSTRUCTURES OF SECONDARY-HARDENING STEEL BY M?SSBAUER SPECTROSCOPY[J]. , 2002, 38(12): 149-152.

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INVESTIGATION ON INFLUENCE OF Co、Al ON MICROSTRUCTURES OF SECONDARY-HARDENING STEEL BY M?SSBAUER SPECTROSCOPY

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