Transactions of Materials and Heat Treatment

Title：Influence of double driven ring rolling on strain and organization distribution of aluminum alloy 5A02 ring

Authors： Feng Shaogui Lan Jian Gu Qing

Unit： Wuhan University of Technology

KeyWords： double drive ring rolling mandrel rotation speed aluminum alloy 5A02 strain uniformity microstructure uniformity

ClassificationCode：TG335

year,vol(issue):pagenumber：2017,42(6):82-87

Abstract：

In order to improve the strain distribution, microstructure and properties of the rolling ring, a double driven ring rolling method was proposed. Taking 5A02 aluminum alloy as the research object, the double driven ring rolling process was studied by the finite element method, and the influences of different mandrel rotation speeds on parameters of the rolling force and energy, the equivalent strain distribution and the shape accuracy were analyzed. The results show that comparing with the conventional ring rolling process, the uniformity of equivalent strain distribution of ring is increased by 50% along the radial direction, and the shape accuracy of ring is maintained well during the rolling process. Therefore, the new process can improve the microstructure uniformity and the comprehensive mechanical properties of ring. According to the results of simulation, the optimal process plan of double driven ring rolling was established, and the ring rolling test and microstructure analysis were conducted. Furthermore, the dendrite crystal phase inside the double driven rolling ring is equally distributed with tiny structures, and the dispersed particles are equally distributed. Thus, the effectiveness of the process is verified.

Funds：

教育部创新团队发展计划项目“先进汽车零部件技术”（IRT13087）；湖北省高端人才引领计划项目（鄂科技通【2012】86号）

冯绍贵（1993-），男，硕士研究生兰箭（1972-），男，博士，教授

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