Thermal simulated welding research of Y-base rare earth microalloyed E36 steel

LIU Tingguang; WU Xiangyu; WANG Zhigang; YANG Qing; SUN Lefei; LAI Chaobin

doi:10.13264/j.cnki.ysjskx.2017.04.008

Volume 8 Issue 4

Aug. 2017

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Nonferrous Metals Science and Engineering > 2017 > 8(4): 42-46. > DOI: 10.13264/j.cnki.ysjskx.2017.04.008

LIU Tingguang, WU Xiangyu, WANG Zhigang, YANG Qing, SUN Lefei, LAI Chaobin. Thermal simulated welding research of Y-base rare earth microalloyed E36 steel[J]. Nonferrous Metals Science and Engineering, 2017, 8(4): 42-46. DOI: 10.13264/j.cnki.ysjskx.2017.04.008

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Thermal simulated welding research of Y-base rare earth microalloyed E36 steel

1a.
School of Metallurgy and Chemical Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, China
1b.
School of Material Science and Engineering, Jiangxi Unicersity of Science and Technology, Ganzhou 341000, China
2.
Ganzhou 341000, China
3.
Xinyu Iron and Steel Group, Xinyu 338001, China

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Received Date: December 08, 2016
Published Date: August 30, 2017

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Abstract

Abstract

Using Gleeble -3800 thermal simulator to add Y-base rare-earth to E36 ship plate steel (hereinafter referred to as the "E36RE ship plate steel"), the thermal simulation experiment research was carried out to investigate the effects of different heat input on the microstructure and mechanical properties of welding heat affected zoneof the E36RE ship plate steel. The results show that with the increase of the cooling time (t8/5), the bainite in the welding heat affects zone reduces gradually; lath-shaped bainite transforms to granular bainite; pearlite appears when cooling time (t8/5) increases to 40 s. When simulating hot line input energy is 78.37 kJ/cm, the microstructure of the simulatedwelding heat affected zone is fine and uniform with good toughness, and the impact toughness is 134.6 J at -40 ℃.
- ship plate steel,
- rare earth,
- welding,
- thermal simulation,
- microstructure,
- impact property

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