Effect of TMCP Parameters on Microstructure and Mechanical Properties of Cargo Oil Tanks Steel

Chi Yu; Xiu Hua Gao; Ping Wang; Xi Xi Niu; Chun Lin Qiu; Lin Xiu Du; Hong Wei Wang

doi:10.4028/www.scientific.net/AMM.577.77

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 577Effect of TMCP Parameters on Microstructure and...

Effect of TMCP Parameters on Microstructure and Mechanical Properties of Cargo Oil Tanks Steel

Abstract:

The effect of TMCP parameters on the microstructure and mechanical properties of cargo oil tanks (COT) steel is investigated. The microstructure characteristics are performed by optical microscope, and the mechanical properties are researched by tensile test at ambient temperature and impact test at different temperatures (-20°C, -40°C). The results show that the microstructures of COT steel are a mixed microstructure consisting of ferrite, granular bainite and pearlite, which are resulted from the special TMCP parameters. The COT steel has good comprehensive mechanical properties by analyzing the experimental data, satisfying the international standard. Furthermore, impact fracture surfaces appear small dimples and a few of large ones, most of the dimple with a certain direction, and the inclusion with the fracture is mainly composed of MnS, CaS and Al₂O₃ composite product.

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Periodical:

Applied Mechanics and Materials (Volume 577)

Pages:

77-80

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.577.77

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Online since:

July 2014

Authors:

Chi Yu*, Xiu Hua Gao, Ping Wang, Xi Xi Niu, Chun Lin Qiu, Lin Xiu Du, Hong Wei Wang

Keywords:

Cargo Oil Tanks (COT) Steel, Mechanical Property, Microstructure, TMCP

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