A Consideration on Deep-Drawability of Commercially Pure Aluminum Sheets

[+] Author and Article Information
N. Kawai, T. Mori, N. Hayashi

Department of Mechanical Engineering, Nagoya University, Frocho, Chikusaku, Nagoya, Japan

A. Eguchi

Hitachi Ltd.

Y. Yasui

Aisin Seiki, Kariya, Japan

J. Eng. Ind 107(4), 379-386 (Nov 01, 1985) (8 pages) doi:10.1115/1.3186013 History: Received March 20, 1985; Online July 30, 2009


Correlation between the deep-drawability of commercially pure aluminum sheets and the r value is investigated in detail. First, sheets with various r values are specially made for this study, and the conditions for making extra high r -value sheets are clarified. Then, it is found from the deep-drawability test that the limiting drawing ratio has a positive though weak correlation with r value. The reasons are considered both from the standpoints of drawing resistance and fracture strength and attributed to the variations of the r value during working. As a result, finding a strain path to enhance the r value is considered to be a future problem in the improvement of deep-drawability.

Copyright © 1985 by ASME
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