Transactions of Materials and Heat Treatment

Title：Study on preparation of ultra-fine grained CNTs/AZ31 alloy composites by equal channel angular pressing

Authors： ZHOU Guo-hua ZENG Xiao-shu XU Qiang(Mechanical and Electronic College Nanchang University Nanchang 330031 China)

Unit：

KeyWords： carbon nanotubes magnesium matrix composites equal channel angular pressing ultra-fine grained microhardness

ClassificationCode：TB33

year,vol(issue):pagenumber：2009,34(2):106-109

Abstract：

Carbon nanotubes/AZ31 alloy composites were prepared by means of equal channel angular pressing(ECAP) and in the die with the intersecting angle φ=90°.The results indicate that a great deal of ultra-fine grains appear in carbon nanotubes/AZ31 alloy composites just after one pass of ECAP.With the increasing of pass number,the proportion of ultra-fine grain increases.With four pressing passes,the grains are effectively refined to a mean size of 1-5μm,and the microhardness of the composites have been enhanced significantly.

Funds：

江西省科技厅攻关项目(z02727)

Reference：

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