Abstract
An Fe-2%Mn-0.36%C martensite with serrated prior-austenite grain boundaries was derived from work hardened austenite deformed at 1023 K. The martensite was tempered and microstructure of grain boundary carbide was observed by scanning electron microscopy and transmission electron microscopy, and compared with a conventional quench-tempered martensite. Coarse carbide films formed along flat prior-austenite grain boundaries in the conventional quench-tempered martensite. These carbide films disappeared, and the fine and uniform carbide structure was obtained in the tempered martensite derived from the work hardened austenite. On a serrated prior-austenite grain boundary, carbide particles had various sizes and shapes, and some parts of the boundary were free from carbide precipitation. Although carbide particles with various orientations were observed on one serrated prior-grain boundary, almost identically oriented carbide particles existed at a locally flat region of the grain boundary. These changes of carbide structure can be accounted for by the fluctuation of orientation on the serrated prior-austenite grain boundary.
| Original language | English |
|---|---|
| Pages (from-to) | 1230-1238 |
| Number of pages | 9 |
| Journal | Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals |
| Volume | 64 |
| Issue number | 12 |
| DOIs | |
| Publication status | Published - Jan 1 2000 |
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All Science Journal Classification (ASJC) codes
- Condensed Matter Physics
- Mechanics of Materials
- Metals and Alloys
- Materials Chemistry
Cite this
Grain boundary carbide structure in tempered martensitic steel with serrated prior austenite grain boundaries. / Yusa, Satoru; Hara, Toru; Tsuzaki, Kaneaki.
In: Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals, Vol. 64, No. 12, 01.01.2000, p. 1230-1238.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Grain boundary carbide structure in tempered martensitic steel with serrated prior austenite grain boundaries
AU - Yusa, Satoru
AU - Hara, Toru
AU - Tsuzaki, Kaneaki
PY - 2000/1/1
Y1 - 2000/1/1
N2 - An Fe-2%Mn-0.36%C martensite with serrated prior-austenite grain boundaries was derived from work hardened austenite deformed at 1023 K. The martensite was tempered and microstructure of grain boundary carbide was observed by scanning electron microscopy and transmission electron microscopy, and compared with a conventional quench-tempered martensite. Coarse carbide films formed along flat prior-austenite grain boundaries in the conventional quench-tempered martensite. These carbide films disappeared, and the fine and uniform carbide structure was obtained in the tempered martensite derived from the work hardened austenite. On a serrated prior-austenite grain boundary, carbide particles had various sizes and shapes, and some parts of the boundary were free from carbide precipitation. Although carbide particles with various orientations were observed on one serrated prior-grain boundary, almost identically oriented carbide particles existed at a locally flat region of the grain boundary. These changes of carbide structure can be accounted for by the fluctuation of orientation on the serrated prior-austenite grain boundary.
AB - An Fe-2%Mn-0.36%C martensite with serrated prior-austenite grain boundaries was derived from work hardened austenite deformed at 1023 K. The martensite was tempered and microstructure of grain boundary carbide was observed by scanning electron microscopy and transmission electron microscopy, and compared with a conventional quench-tempered martensite. Coarse carbide films formed along flat prior-austenite grain boundaries in the conventional quench-tempered martensite. These carbide films disappeared, and the fine and uniform carbide structure was obtained in the tempered martensite derived from the work hardened austenite. On a serrated prior-austenite grain boundary, carbide particles had various sizes and shapes, and some parts of the boundary were free from carbide precipitation. Although carbide particles with various orientations were observed on one serrated prior-grain boundary, almost identically oriented carbide particles existed at a locally flat region of the grain boundary. These changes of carbide structure can be accounted for by the fluctuation of orientation on the serrated prior-austenite grain boundary.
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UR - http://www.scopus.com/inward/citedby.url?scp=0034473769&partnerID=8YFLogxK
U2 - 10.2320/jinstmet1952.64.12_1230
DO - 10.2320/jinstmet1952.64.12_1230
M3 - Article
AN - SCOPUS:0034473769
VL - 64
SP - 1230
EP - 1238
JO - Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals
JF - Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals
SN - 0021-4876
IS - 12
ER -