In the present study, a modified Hall-Petch correlation on the basis of dislocation pile-up model was used to estimate the yield strength of SiCp/Al composites. The experimental results show that the modified Hall-Petch correlation expressed as σcy=244+371λ-1/2 fits very well with the experimental data, which indicated that the strength increase of SiCp/Al composites might be due to the direct blocking of dislocation motion by the particulate-matrix interface,namely, the dislocation pile-up is the most possible strengthening mechanism for SiCp/Al composites.
参考文献
[1] | A B Pandery;B S Majumdar;D B Miracle .[J].Metallurgical and Materials Transactions A:Physical Metallurgy and Materials Science,2000,31A(03):921. |
[2] | B. S. Majumdar;A. B. Pandey .Deformation and Fracture of a Particle-Reinforced Aluminum Alloy Composite: Part II. Modeling[J].Metallurgical and Materials Transactions, A. Physical Metallurgy and Materials Science,2000(3):937-950. |
[3] | V.C.Nardone;K.M.Prewo .[J].Scripta Metallurgica et Materialia,1986,20:43. |
[4] | Vijay K Varma;Y R Mahajan;V V Kutumbarao .[J].Scripta Metallurgica et Materialia,1997,37:485. |
[5] | J.D.Eshelby;F.C.Franck;F.R.N.Narbarro .[J].Philosophical Magazine,1951,42:351. |
[6] | P D Funkenbusch;T H Courtney .[J].Scripta Metallurgica et Materialia,1981,15:1349. |
[7] | W A Spitzig;A R Pelton;F C Laabs .[J].冶金材料学报,1987,35:2427. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分:
-
10%
-
20%
-
30%
-
40%
-
50%