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Forming mechanics of a twin-roll cast AA1100/409L clad sheet after annealing and cold rolling

Gang Chen, Zonghua Wang and Yuanxin Wang

Vol. 19 (2024), No. 2, 251–264
Abstract

Forming mechanics of a twin-roll cast AA1100/409L clad sheet after annealing and cold rolling was investigated by tensile and three-point bending tests. The effect of mechanical properties of the base metals and bonding strength on the strength and ductility of the clad sheet was investigated based on the mixed rule. The clad sheet’s strength obeys the mixed rule only when the bonding strength is as high as 15 N/mm. The negative correlation between strength and ductility and the synergistic effect also exist in the TRC SS/Al clad sheet only when the bonding strength is as high as 15 N/mm. Because of the too small thickness and much higher strength of the steel layer than that of the Al layer, tensile stress dominates during bending of the TRC clad sheet. The deformation and failure process of the clad sheet was analyzed and the processing route for a better formability was proposed.

Keywords
twin-roll casting, clad sheet, cold rolling, annealing, formability
Milestones
Received: 28 July 2023
Revised: 14 November 2023
Accepted: 6 December 2023
Published: 31 January 2024
Authors
Gang Chen
College of Materials Science and Engineering
Qingdao University
Qingdao
China
Shool of Electronics Engineering
Guangxi University of Science and Technology
Liuzhou
China
Zonghua Wang
College of Materials Science and Engineering
Qingdao University
Qingdao
China
Yuanxin Wang
Zhejiang Hengjiyongxin New Materials Co.
Ningbo
China