中国有色金属学报(英文版)
Transactions of Nonferrous Metals Society of China
| Vol. 8 No. 3 September 1998 |
（1.State Key Laboratory of MMC,ShanghaiJiao Tong University, Shanghai200030, P. R. China
2.Department of Materials Engineering,South-West Jiao Tong University, Chengdu 610031, P. R. China）
Abstract:Al-12Si, Al-12Si-Cu and Al-12Si-Mg matrix composites reinforced withδ-Al2O3short fibres were fabricated by using squeeze-casting. The three composites’room temperature tensile strengths were analyzed by linear regression method(LRM). Their prediction equations forφmin,φcandσ′mwere worked out accurately. The relationship betweenσ′mandσumwas discussed in detail. The results showed that the reinforcing effect of composite decreases with increasingσ′m, andσ′mandσ′mσumincrease with increasing matrix strength so that the higher the strength of the matrix is, the lower the reinforcing effect of composite is.
Key words: metal matrix composite linear regression method(LRM) strength fracture
