Effect of temperature and strain rate on the superplastic behaviour of high-carbon steel

The superplastic behaviour of 0.9% carbon steel has been investigated at intermediate temperatures of 650–710°C and strain rates ranging from 5×10 −5 to 7×10 −3 s −1. For this purpose, heat treatment was performed to reduce the grain size of the steel (1–5 μm). Microstructure evaluations were made b...

Full description

Saved in:
Bibliographic Details
Published inJournal of materials processing technology Vol. 83; no. 1; pp. 115 - 120
Main Authors Moshksar, M.M., Marzban Rad, E.
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.11.1998
Subjects
High-carbon steel
Strain rate
Superplastic behavior
High-carbon steel
Superplastic behavior
Strain rate
Online AccessGet full text

Cover

More Information
Summary:The superplastic behaviour of 0.9% carbon steel has been investigated at intermediate temperatures of 650–710°C and strain rates ranging from 5×10 −5 to 7×10 −3 s −1. For this purpose, heat treatment was performed to reduce the grain size of the steel (1–5 μm). Microstructure evaluations were made by optical microscopy and scanning electron microscopy (SEM). The material exhibits high tensile ductility (a total stain of 150–305%) and a high strain-rate-sensitivity exponent m (up to 0.68). It is concluded that grain growth retards grain boundary sliding and superplastic deformation.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0924-0136
DOI:10.1016/S0924-0136(98)00049-1