Transactions of Materials and Heat Treatment

Title：Research progress of split sleeve cold expansion strengthening technology

Authors：

Unit：

KeyWords：

ClassificationCode：V261.2

year,vol(issue):pagenumber：2021,46(1):1-9

Abstract：

Split sleeve cold expansion is a kind of joint hole strengthening technology which can effectively improve the fatigue life of joint hole. With the advantages of no increase in quality, no change in structure and good strengthening effect. The basic principle of the split sleeve cold expansion technology was introduced, and the three key technical problems of the development of split sleeve materials, the preparation technology of split sleeves and the control of fatigue gains that have yet to be solved in our country were explained. The domestic and foreign relevant researches in recent years from the aspects of residual stress and fatigue life were combed and summarized, and the effect of important process parameters such as degree of cold expansion on different materials in the existing literatures was concluded. Based on the shortcomings of the present research, the following research directions were proposed to provide reference for the further research on split sleeve cold expansion technology.

Funds：

江苏省重点研发项目（BE2016179）

作者简介：鲁世红（1964-），女，博士，教授 E-mail：lush@nuaa.edu.cn

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