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RESEARCH PAPERS

Effect of Friction and Specimen Geometry on the Ductile Fracture in Upset Forging

[+] Author and Article Information
S. K. Samanta

Samanta Metal Forming Corp., Taylor, Mich.; Metal Forming Group, Scientific Research Staff, Ford Motor Company, Dearborn, Mich.

J. Eng. Mater. Technol 97(1), 14-20 (Jan 01, 1975) (7 pages) doi:10.1115/1.3443253 History: Revised January 14, 1974; Online August 17, 2010

Abstract

Experiments were conducted to determine the effect of interface friction and specimen geometry on the useful ductile flow limit of 1100 aluminum and 1095 steel at room temperature. The tests consisted of measuring the equatorial strains during simple upsetting of circular cylinders. From the measured strains the surface stress components were calculated. All occurrences of fracture were observed to be the normal type. In some cases no surface cracks were observed and a possible explanation is given in the paper.

Copyright © 1975 by ASME
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