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ASM Handbook

Metalworking: Bulk Forming

Edited by
S.L. Semiatin
S.L. Semiatin
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ASM International
Volume
14A
ISBN electronic:
978-1-62708-185-6
Publication date:
2005
Book Chapter

Coextrusion

By
Raghavan Srinivasan
Raghavan Srinivasan
Wright State University
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Craig S. Hartley
Craig S. Hartley
U.S. Air Force Office of Scientific Research
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Published:
2005
Page range:
505 - 515
Publication history
March 24, 2006

Abstract

Coextrusion is defined as the simultaneous extrusion of two or more metals to form an integral product that can be carried out using conventional extrusion or drawing equipment at a temperature appropriate to the metal system being formed. This article discusses the applications, billet configurations, and metal flow modes of coextrusion. It presents the analytical studies of coextrusion: deformation energy methods, lower-bound (slab) analyses, upper-bound analyses, and finite-element analyses. These studies are used to identify the regime of material properties and process variables for which sound extrusions can be obtained. The article concludes with a discussion on the state-of-the-art of coextrusion that assists in developing process models, which accurately describe both the macroscopic and microscopic aspects of a process.

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Raghavan Srinivasan, Craig S. Hartley, 2005. "Coextrusion", Metalworking: Bulk Forming, S.L. Semiatin

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