Transactions of Materials and Heat Treatment

Title：Forming method of ultra-fine grain/nanocrystalline metallic material based on SPD

Authors： YANG Bao-jian XIA Qin-xiang ZHANG Peng CHENG Xiu-quan

Unit： South China University of Technology Guangzhou Civil Aviation College

KeyWords： severe plastic deformation ultra\|fine grain/ nanocrystalline grain refinement forming method

ClassificationCode：TG386

year,vol(issue):pagenumber：2011,36(2):48-52

Abstract：

In order to explore new SPD forming method for fabricating nanocrystallized material, the characteristics of grain refinement by ECAP and HPT were studied. Extensive investigations show that the recent main problems of SPD processes are low forming efficiency, fatigue crack in deformation process, small specimen size, uneven microstructure. Finally the further research field which lies in grain refinement mechanism and relations between microstructure and material properties was pointed out.

Funds：

国家自然科学基金资助项目（51075153）；广东省自然科学基金资助项目（10151040301000000）

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