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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

Evaluation of Workability for Bulk Forming Processes

By
George E. Dieter
George E. Dieter
University of Maryland
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Published:
2005
Page range:
587 - 614
Publication history
April 04, 2006

Abstract

This article focuses on the factors that determine the extent of deformation a metal can withstand before cracking or fracture occurs. It informs that workability depends on the local conditions of stress, strain, strain rate, and temperature in combination with material factors. The article discusses the common testing techniques and process variables for workability prediction. It illustrates the simple and most widely used fracture criterion proposed by Cockcroft and Latham and provides a workability analysis using the fracture limit line. The article describes various workability tests, such as the tension test, ring compression test, plane-strain compression test, bend test, indentation test, and forgeability test. It concludes with information on the role of the finite-element modeling software used in workability analysis.

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George E. Dieter, 2005. "Evaluation of Workability for Bulk Forming Processes", Metalworking: Bulk Forming, S.L. Semiatin

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