M sub 22 C sub 6 carbide in an Fe-26. 6 Mn-8. 8 Al-0. 61C alloy

Journal Article · Wed Jul 01 04:00:00 EDT 1992 · Scripta Metallurgica et Materialia; (United States)

DOI:https://doi.org/10.1016/0956-716X(92)90321-5· OSTI ID:7030830

Lin, Y L; Chou, C P ^[1]

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1. Dept. of Mechanical Engineering, National Chiao Tung Univ., Hsinchu (TW)

Precipitation of coherent particles of the k-carbide (Fe,Mn){sub 3}AlC{sub x} in Fe-Mn-Al-C alloys, have been studied extensively in the past by means of x-ray diffraction and transmission electron microscopy (TEM) because the presence of carbide has a great influence on the mechanical properties of the alloys. With the increasing of the aging time at 55{degrees}C, coarse d-carbide began to occur on the austenite-austenite ({gamma}-{gamma}) and austenite-ferrite ({gamma}-{alpha}) grain boundaries. Recently the authors made a detailed examination on the microstructural changes of Fe-26.6wt%Mn-8.8wt%Al-0.61wt%C alloy during aging. It was shown that complex carbide M{sub 23}C{sub 6} may occur on {gamma}-{alpha} grain boundaries. In Mo and W-containing steels, low alloy steels, and stainless steels the precipitation of M{sub 23}C{sub 6} carbide has been well established. However, M{sub 23}C{sub 6} carbides in Fe-Mn-Al-C alloys have never been found during the heat treatment stage. The precipitation of M{sub 23}C{sub 6} carbide is associated with the decomposition of austenite phase. The purpose of this paper is to investigate the precipitation of M{sub 23}C{sub 6} carbide in an Fe-26.6Mn-8.8Al-0.61C alloy.

• OSTI ID: 7030830
• Journal Information: Scripta Metallurgica et Materialia; (United States), Journal Name: Scripta Metallurgica et Materialia; (United States) Vol. 27:1; ISSN SCRME
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360102* -- Metals & Alloys-- Structure & Phase Studies
AGING
ALLOYS
ALUMINIUM ALLOYS
ALUMINIUM CARBIDES
ALUMINIUM COMPOUNDS
AUSTENITE
CARBIDES
CARBON ADDITIONS
CARBON COMPOUNDS
CRYSTAL STRUCTURE
GRAIN BOUNDARIES
IRON ALLOYS
IRON BASE ALLOYS
IRON CARBIDES
IRON COMPOUNDS
MANGANESE ALLOYS
MANGANESE CARBIDES
MANGANESE COMPOUNDS
MICROSTRUCTURE
PRECIPITATION
SEPARATION PROCESSES
STEELS
TRANSITION ELEMENT COMPOUNDS
VARIATIONS