TRANSFORMATION KINETICS AND FERRITE-PEARLITE RATIOS IN A 65-45-12 DUCTILE IRON

被引：5
|
作者：
Samuel, C. [1 ]
Viswanathan, S. [1 ]
机构：
[1] Univ Alabama, Dept Met & Mat Engn, Tuscaloosa, AL 35487 USA
来源：
INTERNATIONAL JOURNAL OF METALCASTING | 2008年 / 2卷 / 04期
关键词：
dilatometry; transformation kinetics; ductile iron; pearlite; ferrite; austenite;
D O I：
10.1007/BF03355436
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
Dilatometry has been extensively used to study the transformation behavior of steels. This paper outlines the use of Gleeble dilatometry to characterize the transformation kinetics and ferrite-pearlite ratios it? a 65-45-12 ductile iron. Samples were heated to 900(sic)C (1650(sic)F) and cooled at constant cooling rates ranging from 2 to 2000(sic)C/min (3.6 to 3600(sic)F/min). The dilatometer results were analyzed and transformation temperatures and the ferrite-pearlite ratio in the final microstructure were determined. The information was also used to estimate the continuous-cooling-transformation (CCT) curve for 65-45-12 ductile iron. The agreement between the ferrite-pearlite ratio predicted from the dilatometry results and metallographic analysis of dilatometry specimens was excellent.
引用
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页码：55 / +
页数：10
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