Transactions of Materials and Heat Treatment

Title：Influence of extrusion process parameters on properties of extruded architectural profiles for new aluminum alloy

Authors： Wang Ying Hao Yu Hu Shencheng

Unit： Changchun Institute of Technology FAW Volkswagen Automobile Co. Ltd. Jilin University

KeyWords： extrusion temperature extrusion speed extrusion ratio architectural profiles of new aluminum alloy mechanical properties corrosion resistance properties

ClassificationCode：TG146.21

year,vol(issue):pagenumber：2018,43(4):154-158

Abstract：

In order to study the influence of extrusion process parameters on properties of architectural profiles for new aluminum alloy Al-Mg-Si-Cu-Cr-Sr, the new aluminum alloy profiles were extruded by taking various extrusion temperatures, extrusion speeds and extrusion ratios, and the tensile properties and corrosion resistance properties of profiles were tested and analyzed. The results show that both tensile strength and corrosion resistance property of profiles first increase and then decrease with the increasing of extrusion temperature from 430 ℃ to 550 ℃, extrusion speed from 1 m·min-1 to 5 m·min-1 and extrusion ratio from 10 to 26. Compared with the extrusion temperature of 430 ℃, when the extrusion temperature is 490 ℃, the tensile strength of profiles increases by 39 MPa, and the corrosion potential shifts positively by 0.127 V. However, compared with the extrusion speed of 1 m·min-1, when the extrusion speed is 3 m·min-1, the tensile strength of profiles increases by 27 MPa, and the corrosion potential shifts positively by 0.097 V. Furthermore, compared with the extrusion ratio of 26, when the extrusion ratio is 18, the tensile strength of profiles increases by 22 MPa, and the corrosion potential shifts positively by 0.109 V. Finally, the optimal extrusion process parameters of architectural profiles for new aluminum alloy Al-Mg-Si-Cu-Cr-Sr are as follows: the extrusion temperature is 490 ℃, the extrusion speed is 3 m·min-1 and the extrusion ratio is 18.

Funds：

王莹（1965-），女，硕士，副教授；E-mail：ccwy121@sina.com

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