THE MICROSTRUCTURE AND PROPERTY OF IN SITU TiC_P/Fe  COMPOSITE

Abstract

Abstract: Under aircondition,theinsitu TiCP/ Fecompositeshavebeen fabricated by a reactivecast ing route usingtheinexpensiveraw materials. The microstructuresofthecompositehavebeen studied by X ray diffraction,image analyzer and analyticalelectron microscopy. The me chanicalpropertiesand abrasive wearresistanceofboththeas castcompositeandthequenched composite havebeen measured. Theresultsshow thattheinsitu TiCparticles with a average sizeof 4 51μm exhibit a homogenous distribution inthe matrix, and an excellentinterface bonding between the particle and the matrix is achieved. As above microstructure features, thecomposite,especiallythequenched composite, hashigher mechanicalpropertiesand betterwear resistance,compared with high Cr whitecastiron.

Key words: TiCP/ Fecomposite, insitu reaction, casting, structure, property

Y.W.Yan1) , B.K.Wei2) , Z.Y.Fu1) , H.T.Lin2) and R.Z.Yuan1) 1) State Key Lab .of Advanced Technologyfor Materials Synthesisand Processing,Wuhan University of Technol ogy, Wuhan 430070 ,China 2) Institute of Materials, Huazhong University of Science and Technology, Wuhan 430074 ,China. THE MICROSTRUCTURE AND PROPERTY OF IN SITU TiC_P/Fe COMPOSITE[J]. Acta Metallurgica Sinica (English Letters), 1999, 12(4): 442-446.

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THE MICROSTRUCTURE AND PROPERTY OF IN SITU TiC_P/Fe COMPOSITE

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