Acta Metallurgica Sinica (English Letters) ›› 1992, Vol. 5 ›› Issue (11): 423-428.

• Research paper • Previous Articles    

PREPARATION,PROPERTIES AND INTERFACE STRUCTURES OF Si_3N_(4w)/6061Al COMPOSITE

PAN Jin Changsha Institute of Technology,Changsha,ChinaNING Xiaoguang YE Hengqiang Laboratory of Atomic Imaging of Solids,Institute of Metal Research,Academia Sinica,Shenyang,China   

  • Received:1992-11-11 Revised:1992-11-11 Online:1992-11-11 Published:2009-10-10

Abstract: The Si_3N_4 whisker reinforced 6061Al composite with bending strength of 790 MPa was prepared by squeeze casting process.After heat-treatment under T6 regime i.e.530℃, 1 h solutioning and 160℃,24 h aging,an increment in strength and microhardness may be over 20% and 28% respectively,The microstructures of Si_3N_4 whisker and Si_3N_4/Al interface were observed by meas of HRTEM.The relation between interracial structure and composite properties was discussed.

Key words: β-Si_3N_4 wthisker, Al matrix composite, strength, interface