STRUCTURE AND GROWTH OF PLATELETS IN GRAPHITE SPHERULITES IN CAST-IRON

被引：55
作者：
MIAO, B
WOOD, DON
BIAN, WM
FANG, KM
FAN, MH
机构：
[1] NE UNIV TECHNOL,CTR MAT ANAL,SHENYANG 110006,PEOPLES R CHINA
[2] UNIV SCI & TECHNOL BEIJING,DEPT PHYS CHEM,BEIJING 100083,PEOPLES R CHINA
[3] UNIV SCI & TECHNOL BEIJING,DEPT MECH ENGN,BEIJING 100083,PEOPLES R CHINA
[4] UNIV SCI & TECHNOL BEIJING,DEPT MAT SCI & ENGN,BEIJING 100083,PEOPLES R CHINA
来源：
JOURNAL OF MATERIALS SCIENCE | 1994年 / 29卷 / 01期
关键词：
D O I：
10.1007/BF00356601
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The structure and orientation of graphite platelets in graphite spherulites (GS) in cast irons modified by either cerium or magnesium plus cerium were investigated by TEM and micro-diffraction. The platelets have a rhombohedral structure with their [001] directions nearly parallel to the radius of the GS, but each platelet is twisted about 2-degrees over a 1 mum length. Randomly orientated graphite is located in the interplatelet areas, in which most of the graphite has a hexagonal structure rather than rhombohedral structure. Based on the crystallographic characterization of the graphite and the cerium and magnesium elemental distribution in the GS, the model for the growth of GS as originally proposed by Double and Hellawell is re-examined.
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页码：255 / 261
页数：7
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