Transactions of Materials and Heat Treatment

Title：Extrusion rheological law on continuous steel-wire-reinforced aluminum-based composite bar based on Deform-2D

Authors： Liu Mingfu Zhang Cunsheng Meng Zijie Yang Wenjie He Haixin

Unit：

KeyWords：

ClassificationCode：TG31

year,vol(issue):pagenumber：2021,46(9):177-183

Abstract：

The extrusion mold of continuous fiber-reinforced aluminum-based composite bar was designed, and the 2D numerical simulation of the entire extrusion process was conducted based on of Deform-2D software. Then, the rheological laws of material and the distribution characteristics of each physical field on the welding path were studied during the extrusion process of composite profiles, and the aluminum-based composite bar reinforced by continuous steel wire was obtained by extrusion experiment. The results show that the stress concentration on the steel wire is caused by the triaxial compressive stress and the uneven flow of billet in the welding chamber. In the extrusion process of composite profile, the bonding between steel wire and aluminum matrix firstly depends on the welding pressure in the welding chamber, and its adhesion outside the port of mold depends mainly on the extrusion temperature. In the welding path, the higher extrusion temperature, welding pressure, strain and strain rate are beneficial to the welding of the profile weld and its interface. However, during the extrusion process, the flow of the aluminum matrix is affected by the fibers, and it also has a certain impact on the embedding position and the force state of the fibers.

Funds：

国家自然科学基金资助项目（51975330）;山东省重大科技创新工程项目（2019JZZY010360）

刘明甫（1994-），男，博士研究生 E-mail：liumf@mail.sdu.edu.cn 通信作者：张存生（1980-），男，博士，教授 E-mail：zhangcs@sdu.edu.cn

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