Transactions of Materials and Heat Treatment

Title：Deformation law of 7B50 aluminum alloy in shot peening for large size projectiles

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ClassificationCode：V261.2

year,vol(issue):pagenumber：2021,46(3):96-100

Abstract：

Shot peening with large size projectiles is an effective plastic forming method for integral panels. Therefore, for 7B50 aluminum alloy plate specimens, the experiments of shot peening process with large size projectiles were conducted by orthogonal experiment, and the changing rules of curvature radius along the chord and span directions of specimens after shot peening under different process parameters were studied. The results show that after shot peening, the specimen is deformed into a spherical convex, and the curvature radius along the chord direction is smaller than that along the span direction. The influence order of various factors on the curvature radius is pressure of shot peening>specimen thickness>moving speed. Besides, the curvature radius increases with the increasing of specimen thickness and moving speed and decreases with the increasing of pressure of shot peening. Thus, the regression equation that can reflect the quantitative relationships between the curvature radius and the three factors is established, which provides the basic reference for predicting deformation of shot peening.

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时圣革（1973-），男，硕士，高级工程师 E-mail：15910627299@139.com 通讯作者：王明涛（1986-），男，硕士，高级工程师 E-mail：5iwangming@163.com

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