tensile deformation behavior of SiCw/Al composites①
(School of Materials Science and Engineering, Harbin Institute of Technology,
Harbin 150001, P.R.China)
摘 要:
关键字:
tensile deformation behavior of SiCw/Al composites①
（School of Materials Science and Engineering, Harbin Institute of Technology,
Harbin 150001, P.R.China）
Abstract:By means of XRD, Instron electronic tensile machine and TEM, the dislocation states and strengthening mechanisms of SiC whisker reinforced pure aluminum matrix composites were studied with different annealing treatment processes and matrixes. The results showed that the strengthening mechanisms of SiCw/p-Al composite and SiCw/6061Al composites are different. For the SiCw/p-Al composite, the thermal residual stress plays more important role in strengthen-
ing than the high density dislocations in matrix; for the SiCw/6061Al composite, the dislocation strengthening and precipitation are main strengthening factors.
Key words: SiC whisker; yield strength; dislocation; thermal residual stress
