Transactions of Materials and Heat Treatment

Title：Forging process optimization of 7B04 aluminum alloy joint in a aircraft

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ClassificationCode：TG316

year,vol(issue):pagenumber：2021,46(10):38-43

Abstract：

In order to solve the problems of low strength and too many forging processes for 7B04 aluminum alloy joint forgings in a aircraft, the forging process of 7B04 aluminum alloy joint in a aircraft was studied based on DEFORM numerical simulation software. The results show that by optimizing the die resistance wall, the metal flows along the longitudinal and transverse directions are more uniform, and the complete filling in the high rib position of the forgings can be ensured. At the same time, the proportion of metal outflow for longitudinal and transverse directions is optimized. Compared with the final fire forging process of traditional forging process, the proportion of metal outflow for transverse and longitudinal directions is optimized from 4∶1 to 3∶2, and one fire forging is realized. The trial production results of the optimized process are in good agreement with the numerical simulation results, the metal streamlines in the longitudinal and cross sections of the forgings are uniform, the tensile strength and yield strength of the forgings are significantly improved, both meet the product performance indexes, and the margin of tensile strength and yield strength exceeds 20 MPa.

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作者简介：王富强（1978-），男，工学博士，高级工程师 E-mail：wangfq@avic.com

Reference：

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