Aging precipitation in low carbon bainitic steels

LI Chuang; WANG Xuemin; ZHOU Guifeng; YANG Shanwu; SHANG Chengjia; HE Xinlai

doi:10.13374/j.issn1001-053x.2006.06.006

Volume 28 Issue 6

Aug. 2021

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LI Chuang, WANG Xuemin, ZHOU Guifeng, YANG Shanwu, SHANG Chengjia, HE Xinlai. Aging precipitation in low carbon bainitic steels[J]. Chinese Journal of Engineering, 2006, 28(6): 534-538. doi: 10.13374/j.issn1001-053x.2006.06.006

Citation:

LI Chuang, WANG Xuemin, ZHOU Guifeng, YANG Shanwu, SHANG Chengjia, HE Xinlai. Aging precipitation in low carbon bainitic steels[J]. Chinese Journal of Engineering, 2006, 28(6): 534-538. doi: 10.13374/j.issn1001-053x.2006.06.006

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Aging precipitation in low carbon bainitic steels

doi: 10.13374/j.issn1001-053x.2006.06.006

1. Materials Science and Engineering School, University of Science and Technology Beijing, Beijing 100083, China;
2. National Enterprise's Technical Center, Wuhan Iron & Steel Corporation, Wuhan 430080, China

Received Date: 2005-03-18
Rev Recd Date: 2005-06-28

Available Online: 2021-08-24

Abstract

Abstract

The aging hardening behavior of low carbon bainitic steels with Cu, Nb, Cr, and Mo was determined, and creep tests for various steels were conducted on a Gleeble-1500 thermal simulator. Optical microscope and TEM were employed to study the microstructure and precipitates of the steels respectively. The results indicate that there is an obvious aging hardening behavior during the aging of copper containing steels; a plateau occurs on the creep curve at different temperatures, which results from the precipitation. The occurrence of the plateau means the start of the precipitation process, and when the precipitation finishes the plateau disappears.
- low carbon bainitic steel,
- creep,
- microstructure,
- aging precipitate