STUDY OF K_(2)O·6TiO_(2)  WHISKER REINFORCED AI COMPOSITES FOR THEIR MECHANICAL PROPERTIES AND INTERFACIAL STRUCTURES

Acta Metallurgica Sinica (English Letters) ›› 1994, Vol. 7 ›› Issue (2): 119-123.

• Research paper • Previous Articles Next Articles

STUDY OF K_(2)O·6TiO_(2) WHISKER REINFORCED AI COMPOSITES FOR THEIR MECHANICAL PROPERTIES AND INTERFACIAL STRUCTURES

Received:1994-04-25 Revised:1994-04-25 Online:1994-04-25 Published:2009-10-10

Abstract

Abstract: A newly developed whisker K_(2)O 6TiO_(2) reinforced 6061 Al composite was prepared by squeeze casting process. The flexural strength of the composite is 518MPa, and decreases to 490 M Pa after T6 treatment.The hardness of the composite also shows the similar change while T6 treating. The results of HRTEMobservation may explaine this property change. It was considered that there is a continuous TiO layer at the whisker-matrix interface, which is easily to react with the segregated Mg and to form MgTi_(2)O_(4), MgAl_(2)O_(4). The thickening of TiO layer after T6 treatment is the main reason resulting in strength degradation of composite.

Key words: potassium titanate. whisker, aluminium alloy, composites interface

PA N JinChangsha Institute of Technology, ChinaLI Jihong, NING Xiaoguang, YE HengqiangLab. of Atomic Imaging of Solids, Institute of Metal Research, Chinese Academy of Sciences. Shenyang, China Manuscript received 28 February, 1994. STUDY OF K_(2)O·6TiO_(2) WHISKER REINFORCED AI COMPOSITES FOR THEIR MECHANICAL PROPERTIES AND INTERFACIAL STRUCTURES[J]. Acta Metallurgica Sinica (English Letters), 1994, 7(2): 119-123.

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STUDY OF K_(2)O·6TiO_(2) WHISKER REINFORCED AI COMPOSITES FOR THEIR MECHANICAL PROPERTIES AND INTERFACIAL STRUCTURES

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