Ratio of Fe-Al compound at interface of steel-backed Al-graphite semi-solid bonding plate

来源期刊：中南大学学报(英文版)2007年第1期

论文作者：张鹏 杜云慧 刘汉武 张君 曾大本 巴立民

文章页码：7 - 7

Key words：bonding interface; ratio of Fe-Al compound at interface; artificial neural network

Abstract: The ratio of Fe-Al compound at the bonding interface of solid steel plate to Al-7graphite slurry was used to characterize the interfacial structure of steel-Al-7graphite semi-solid bonding plate quantitatively. The relationship between the ratio of Fe-Al compound at interface and bonding parameters (such as preheat temperature of steel plate, solid fraction of Al-7graphite slurry and rolling speed) was established by artificial neural networks perfectly. The results show that when the bonding parameters are 516 ℃ for preheat temperature of steel plate, 32.5% for solid fraction of Al-7graphite slurry and 12 mm/s for rolling speed, the reasonable ratio of Fe-Al compound corresponding to the largest interfacial shear strength of bonding plate is obtained to be 70.1%. This reasonable ratio of Fe-Al compound is a quantitative criterion of interfacial embrittlement, namely, when the ratio of Fe-Al compound at interface is larger than 70.1%, interfacial embrittlement will occur.

基金信息：the Program for New Century Excellent Talents in University
the Research Fund for the Doctoral Program of Higher Education
the Natural Science Foundation of Beijing, China
the Foundation of Beijing Jiaotong University