Carbon Steel Sheet Mill, Jiuquan Iron and Steel Co. , Ltd. , Jiayuguan 735100, Gansu, China
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History+
Received
Revised
Published
2014-10-13
2014-11-03
2015-02-15
Issue Date
2015-02-02
Abstract
X120 pipeline steel was trial-produced at a laboratory and the continuous cooling transformation (CCT) curves of it were drawn. The results indicate that the steel as-rolled has average yield strength of 905MPa, average tensile strength of 980MPa, average elongation of 17%, Rp0. 2/Rm of 0. 92 and average impact energy of 90J at -20℃. After tempered for 2h at 600℃, the steel has average yield strength of 950MPa, average tensile strength of 1000MPa, average elongation of 18%, Rp0. 2/Rm of 0. 95 and average impact energy of 95J at -20℃. After compression, the microstructure of the steel cooled at 5℃/s is lath bainite which is ideal microstructure of X120 pipeline steel.
ZHENG Yue-qiang,TANG Xing-chang,LI Ji-peng,WANG Yun-ping.
Trial-production and phase transformation rule of X120 pipeline steel[J]. Journal of Iron and Steel Research, 2015, 27(2): 45-49 https://doi.org/10.13228/j.boyuan.issn1001-0963.20140368
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