AP-FIM study of ultra-fine precipitates at the peak hardening stage in a tempered Fe-Mo-C alloy

Ryuji Uemori; Mitsuru Tanino

doi:10.2320/jinstmet1952.55.2_141

AP-FIM study of ultra-fine precipitates at the peak hardening stage in a tempered Fe-Mo-C alloy

Ryuji Uemori, Mitsuru Tanino

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1 Citation (Scopus)

Abstract

Morphology and chemical compositions of the precipitates formed at the peak stage of secondary hardening in an Fe-Mo-C alloy were examined by atom probe field ion microscopy (AP-FIM). AP-FIM analysis has confirmed the existence of not only needle-like Mo₂C precipitates along the 〈100〉_α-Fe directions but also plate-like precipitates lying parallel to the {100}_α-Fe planes. The latter were deduced to be clusters of Mo and a small fraction of Fe atoms that contain neither C nor N. These Mo-rich clusters are finer and more densely distributed than Mo₂C. Thus, its presence may contribute to the secondary hardening of Mo steels.

Original language	English
Pages (from-to)	141-150
Number of pages	10
Journal	Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals
Volume	55
Issue number	2
DOIs	https://doi.org/10.2320/jinstmet1952.55.2_141
Publication status	Published - Jan 1 1991
Externally published	Yes

All Science Journal Classification (ASJC) codes

Condensed Matter Physics
Mechanics of Materials
Metals and Alloys
Materials Chemistry

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abstract = "Morphology and chemical compositions of the precipitates formed at the peak stage of secondary hardening in an Fe-Mo-C alloy were examined by atom probe field ion microscopy (AP-FIM). AP-FIM analysis has confirmed the existence of not only needle-like Mo2C precipitates along the 〈100〉α-Fe directions but also plate-like precipitates lying parallel to the {100}α-Fe planes. The latter were deduced to be clusters of Mo and a small fraction of Fe atoms that contain neither C nor N. These Mo-rich clusters are finer and more densely distributed than Mo2C. Thus, its presence may contribute to the secondary hardening of Mo steels.",

author = "Ryuji Uemori and Mitsuru Tanino",

year = "1991",

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doi = "10.2320/jinstmet1952.55.2_141",

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AU - Tanino, Mitsuru

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N2 - Morphology and chemical compositions of the precipitates formed at the peak stage of secondary hardening in an Fe-Mo-C alloy were examined by atom probe field ion microscopy (AP-FIM). AP-FIM analysis has confirmed the existence of not only needle-like Mo2C precipitates along the 〈100〉α-Fe directions but also plate-like precipitates lying parallel to the {100}α-Fe planes. The latter were deduced to be clusters of Mo and a small fraction of Fe atoms that contain neither C nor N. These Mo-rich clusters are finer and more densely distributed than Mo2C. Thus, its presence may contribute to the secondary hardening of Mo steels.

AB - Morphology and chemical compositions of the precipitates formed at the peak stage of secondary hardening in an Fe-Mo-C alloy were examined by atom probe field ion microscopy (AP-FIM). AP-FIM analysis has confirmed the existence of not only needle-like Mo2C precipitates along the 〈100〉α-Fe directions but also plate-like precipitates lying parallel to the {100}α-Fe planes. The latter were deduced to be clusters of Mo and a small fraction of Fe atoms that contain neither C nor N. These Mo-rich clusters are finer and more densely distributed than Mo2C. Thus, its presence may contribute to the secondary hardening of Mo steels.

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