Semi-solid Structure of Hypoeutectic High Chromium Cast Iron In Different Flute Radius of Slope Plate

Jiang Wenming Jiang Yehua Zhou Rongfeng Zhou Rong

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Semi-solid Structure of Hypoeutectic High Chromium Cast Iron In Different Flute Radius of Slope Plate
Issue S1, Pages: 378-380(2007)
Published：2007
DOI：
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[1]蒋文明,蒋业华,周荣锋,周荣.不同倾斜板凹槽半径条件下的亚共晶高铬铸铁半固态组织[J].特种铸造及有色合金,2007(S1):378-380. DOI：

Jiang Wenming Jiang Yehua Zhou Rongfeng Zhou Rong. Semi-solid Structure of Hypoeutectic High Chromium Cast Iron In Different Flute Radius of Slope Plate[J]. Special Casting & Nonferrous Alloys, 2007, (S1): 378-380. DOI：

摘要

采用自制的倾斜板对亚共晶高铬铸铁进行半固态成形

通过观察倾斜板凹槽半径为100mm和400mm两种条件下形成的先共晶奥氏体的形貌

并借助德国Leica公司的图像分析仪

分别定量表述了先共晶奥氏体的平均形状系数、平均等效直径、固相率的变化趋势

对倾斜板凹槽半径对先共晶奥氏体形成过程的影响进行了初步探讨。结果表明:凹槽半径为400mm较凹槽半径为100mm时

亚共晶高铬铸铁先共晶奥氏体颗粒圆整度明显提高

奥氏体颗粒的平均形状系数增加

平均等效直径减小

固相率略有增加

获得了较为理想的亚共晶高铬铸铁半固态组织。

Abstract

Semi-solid forming of hypoeutectic high chromium cast iron was prepared by self-made slope plate

through observing appearance of pro-eutectic austenite in one hundred and four hundred millimeter flute radius

and the changing characteristics of the average shape factor and average equivalent diameter and solid rate of pro-eutectic austenite were quantitatively Analyzed Leica image analyzer

discussing the formation influence of pro-eutectic austenite in different flute radius of slope plate.The result indicated that the roundness of four hundred millimeter flute radius is obviously enhanced

and the average shape factor of austenite increased

average equivalent diameter minished

solid rate increased a little

than one hundred millimeter flute radius

obtaining perfect semi-solid structure of hypoeutectic high chromium cast iron.