Transactions of Nonferrous Metals Society of China The Chinese Journal of Nonferrous Metals

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中国有色金属学报

ZHONGGUO YOUSEJINSHU XUEBAO

第6卷    第1期    总第18期    1996年3月

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文章编号:(1996)01-130-6
TiC及Ti2C在铝结晶过程中的核心作用
王昶明1,冯庆玲2

(1.北京轻工业学院机械系,北京100037;
2.济华大学材料系,北京100084
)

摘 要: 将工业纯铝(99.7%)用亚包晶成分的Ti(<0.15%)实行变质处理,采用电子衍射等方法研究其结晶核心,证明α-Al核心除丁TiC。TiC为立方晶格,粒子外,还存在Ti2C。TiC为立方晶体,a =0.4380nm;Ti2C为正交晶格,a=1.20nm,b=1.06nm,c=1.5.nm。

 

关键字: 碳化钛 晶核 亚包晶 铝

NUCLEATION OF ALUMINIUM ON TiC AND Ti2C IN THE CRYSTALLIZATION PROCESS
Wang Changming1,Feng Qingling2

1.Beijing Institute of Light Industry,Beijing 100037;
 2.Tsinghua University,Beijing 100084

Abstract:The crystallization center in commercially pure aluminium ( 99.7%)castings inoculated with hy-poperitectic titanium(<0. 15%) was nvestigated by electron diffraction. It has been found that the particles were composed of stoichiometric TiC, having cubic lattice with a=0. 438 0 nm,and Ti2C, having orthorhombic lattice with a=1. 20 nm,b =1.06 nm and c = 0. 50 nm.

 

Key words: crystallization   aluminium    TiC

ISSN 1004-0609
CN 43-1238/TG
CODEN: ZYJXFK

ISSN 1003-6326
CN 43-1239/TG
CODEN: TNMCEW

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