MICROSTRUCTURE OF ULTRA-FINE GRAIN STEEL

SONG Li-qiu; HOU Huo-ran; ZUO Jun; WANG Yi-cheng; LIU Qing-you; ZHANG Kai-jian; DONG Han

Sep. 2003

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Article Navigation > IRON STEEL VANADIUM TITANIUM > 2003 > 24(3): 32-36

SONG Li-qiu, HOU Huo-ran, ZUO Jun, WANG Yi-cheng, LIU Qing-you, ZHANG Kai-jian, DONG Han. MICROSTRUCTURE OF ULTRA-FINE GRAIN STEEL[J]. IRON STEEL VANADIUM TITANIUM, 2003, 24(3): 32-36.

Citation:

SONG Li-qiu, HOU Huo-ran, ZUO Jun, WANG Yi-cheng, LIU Qing-you, ZHANG Kai-jian, DONG Han. MICROSTRUCTURE OF ULTRA-FINE GRAIN STEEL[J]. IRON STEEL VANADIUM TITANIUM, 2003, 24(3): 32-36.

SONG Li-qiu, HOU Huo-ran, ZUO Jun, WANG Yi-cheng, LIU Qing-you, ZHANG Kai-jian, DONG Han. MICROSTRUCTURE OF ULTRA-FINE GRAIN STEEL[J]. IRON STEEL VANADIUM TITANIUM, 2003, 24(3): 32-36.

Citation:

SONG Li-qiu, HOU Huo-ran, ZUO Jun, WANG Yi-cheng, LIU Qing-you, ZHANG Kai-jian, DONG Han. MICROSTRUCTURE OF ULTRA-FINE GRAIN STEEL[J]. IRON STEEL VANADIUM TITANIUM, 2003, 24(3): 32-36.

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MICROSTRUCTURE OF ULTRA-FINE GRAIN STEEL

1. Panzhihua Iron and Steel Research Institute, Panzhihua?617000, Sichuan, China;
2. Central Iron and Steel Research Institute, Beijing 100081, China

Received Date: 2003-06-20

Abstract

Abstract

The microstructure of commercial ultra-fine grain steel with plain carbon composition was analyzed. The results show that the microstructure of ultra-fine grain steel is composed of ferrite and pearlite. The ferrite grain size is about 4~5 μm. The volume fraction of pearlite in the microstructure is relatively low. The cementite appears as small sticks and pellets in pearlite. Fine ferrite makes the dislocation density decrease in grain, and is beneficial to increase the strength and toughness of steel.
- ultra-fine grain steel,
- ferrite,
- pearlite