An experimental study on size effects on flow stress and formability of aluminm and brass for microforming Academic Article

abstract

• In order to understand the characteristics of micro metal forming, tensile and bending tests were conducted on both aluminum 1100 O-temper and brass 26000(1/2) hard (H02) to investigate the influence of size effects on flow stress and formability. In this study, it has been observed that the yield strength and tensile strength decrease as T/D (thickness/average grain diameter) ratio decreases until T/D approaches one. However, as the average grain diameter is greater than thickness (T/D < 1), the yield stress increases with large deviation as the T/D ratio decreases from the results of bending test. In addition, the stretchability (formability) decreases with decrease of T/D ratio on both aluminum 1100 O-temper and Brass 26000(1/2) hard (H02). According to the research results of this study, formability and flow stress of micro forming can be expressed as functions of T/D ratio. 2006 Elsevier B.V. All rights reserved.

authors

• Wang, Jyhwen

published proceedings

• JOURNAL OF MATERIALS PROCESSING TECHNOLOGY

author list (cited authors)

• Gau, J., Principe, C., & Wang, J.

citation count

• 130

complete list of authors

• Gau, Jenn-Terng||Principe, Chris||Wang, Jyhwen

publication date

• January 2007

publisher

• Elsevier  Publisher

published in

• Journal of Materials Processing Technology  Journal

keywords

• Flow Stress
• Formability
• Microforming
• Size Effect

Digital Object Identifier (DOI)

• 10.1016/j.jmatprotec.2006.11.003

start page

• 42

end page

• 46

volume

• 184

issue

• 1-3

URL

• http%3A%2F%2Fdx.doi.org%2F10.1016%2Fj.jmatprotec.2006.11.003