Transactions of Materials and Heat Treatment

Title：Influence of spinning on microstructure and properties for double conical components

Authors： Yang Wenhua Zhao Jianbin Hao Hualei Cui Xuchang Hao Aiguo Ji Wei

Unit： China Academy of Engineering Physics

KeyWords： double conical components multi-pass spinning stamping and spinning gap between part and die tensile strength

ClassificationCode：TG306

year,vol(issue):pagenumber：2020,45(9):130-136

Abstract：

In order to form aluminum alloy double conical components, two methods of multi-pass spinning and stamping and spinning were adopted. The influence laws of two methods on the thickness and the gap between part and die of spinning part, and on the microstructure and properties in different positions were studied. The results show that the wall thickness of parts is uneven and the gap between part and die is about 1 mm after multi-pass spinning, and the wall thickness is even and the gap between part and die is less than 0.2 mm after punching and spinning. However, the tensile strength of the side wall for the test piece formed by two spinning methods is 162-171 MPa, which is 27%-34% higher than that of the raw material, and the tensile strength of mouth part is 133-149 MPa, which is 4.7%-17% higher than that of the raw material. Furthermore, after spinning, the microstructure distribution is uneven, and the microstructure is extended along the axial and tangential directions of component. Thus, after spinning, the number of dimples in the fracture is constantly decreasing, the quasi-cleavage plane is constantly increasing, and the greater the thinning rate is, the more obvious this phenomenon is.

Funds：

杨文华(1988-)，男，硕士，工程师 E-mail：ywh060962@126.com

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