自然科学版 英文版
自然科学版 英文版
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中南大学学报(英文版)

Journal of Central South University

Vol. 14    No. 1    February 2007

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Ratio of Fe-Al compound at interface of steel-backed Al-graphite semi-solid bonding plate
ZHANG Peng(张 鹏)1, DU Yun-hui(杜云慧)1, LIU Han-wu(刘汉武)1, ZHANG Jun(张 君)1,ZENG Da-ben(曾大本)2, BA Li-min(巴立民)3

1. Department of Mechanical Engineering, Beijing Jiaotong University, Beijing 100044, China;2. Department of Mechanical Engineering, Tsinghua University, Beijing 100084, China;3. Anshan Automobile Fittings Factory, Anshan 114014, China

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.

 

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

中南大学学报(自然科学版)
  ISSN 1672-7207
CN 43-1426/N
ZDXZAC
中南大学学报(英文版)
  ISSN 2095-2899
CN 43-1516/TB
JCSTFT
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