Effect of heat treatment on microstructure, mechanical properties and fracture behaviour of ship and dual phase steels
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Date
2011
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Journal ISSN
Volume Title
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info:eu-repo/semantics/closedAccess
Abstract
Grade A (GA) and high strength steel DH36 ship steels possessing different chemical compositions were used, and strength properties of GA steel and DH36 steel were compared. Additionally, 4 types of dual phase (DP) steels with different martensite volume fractions (MVFs) were produced from GA steel by means of heat treatment and they were compared with other steels through conducting microstructure, microhardness, tensile and impact tests. The fracture surfaces of specimens (DH36, GA and DP steels) exposed to tensile and Charpy impact tests were investigated by scanning electron microscope. Furthermore, it was found that the specimens quenched from 800 and 900 °C had better strength than DH36 steel. The tensile test results indicated that the tensile strength of DP steel water quenched from 900 °C was 3 times that of GA steel and twice that of DH36 steel. © 2011 Central Iron and Steel Research Institute.
Description
Keywords
DH36 ship steel, Dual phase steel, Fracture, Grade A ship steel, Martensite, Mechanical property
Journal or Series
Journal of Iron and Steel Research International
WoS Q Value
Scopus Q Value
Q2
Volume
18
Issue
8
