Paper Title:
Effect of Heat Treatment Process on Microstructure and Properties in Low Carbon Si-Mn Q&P Steel
  Abstract

The mechanical properties of Low Carbon Si-Mn Q&P steel are strongly affected by the conditions of heat treatment. Microstructures and mechanical properties of Low Carbon Si-Mn Q&P steel at different partitioning temperature and holding time was investigated. The microstructure was analysed by scanning electron microscopy (SEM) and transmission electron microscopy (TEM). It is shown that the microstructure of Q&P steel is carbon-depleted lath martensite and carbon enriched retained austenite. The retained austenite appear film-type between the laths. Higher partitioning temperature and longer partitioning time can obtain more retained austenite. It is shown that with increasing partitioning time ultimate tensile strength decreases, while elongation increases obviously. Carbon-enriched metastable retained austenite is considered beneficial because the TRIP phenomenon during deformation can contribute to formability and energy absorption.

  Info
Periodical
Advanced Materials Research (Volumes 233-235)
Chapter
5 Green Chemical Process Technology
Edited by
Zhong Cao, Lixian Sun, Xueqiang Cao, Yinghe He
Pages
1009-1013
DOI
10.4028/www.scientific.net/AMR.233-235.1009
Citation
C. Zhao, D. Tang, "Effect of Heat Treatment Process on Microstructure and Properties in Low Carbon Si-Mn Q&P Steel", Advanced Materials Research, Vols. 233-235, pp. 1009-1013, 2011
Online since
May 2011
Authors
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Price
$35.00
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