Transactions of Materials and Heat Treatment

Title：Research prospect on the influence of micro forming size effect at room temperature on strength and toughness of materials

Authors： Chen Shixiong Peng Biyou Pan Renyuan Zhao Xiang

Unit： Xihua University

KeyWords： micro plastic forming size effect yield strength plasticity tensile strength fracture toughness

ClassificationCode：TG306

year,vol(issue):pagenumber：2016,41(11):1-8

Abstract：

It was summed up the research on the size effect of micro forming in recent years, and the relationships among micro forming effect and material yield strength, plasticity, tensile strength, fracture toughness were summarized based on the existing literature on the deformation behavior including that as follows: grain size, thickness and the ratio between them have an important influence on yield strength; the elongation increases with the increase of thickness; there is a complex relationship between tensile strength and thickness size as well as grain size; the fracture toughness of material has an inseparable relationship with various sizes. Furthermore, reasons of the differences among the conclusions of these studies were explored. At the same time，it pointed out that there were some key problems in the mechanism of micro forming size effect to be solved urgently.

Funds：

四川省教育厅项目（11ZA001）；西华大学研究生创新基金资助项目（ycjj2015106）

陈世雄（1991-），男，硕士研究生彭必友（1979-），男，博士，副教授

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