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Effect of cooling medium on microstructure evolution and tensile properties of creep-strength-enhanced ferritic steel
, N. Saini, J.G. Thakre, M.M. Mahapatra, P. Kumar
Published in Elsevier Espana S.L.
In creep-strength-enhanced ferritic steels, hydrogen-induced cold cracking of weldments is a serious issue. In the present research work, the effect of cooling medium on tensile properties and microstructure evolution of P91 steel weldments has been studied. For water-cooling condition, the diffusible hydrogen metal in deposited metal was measured by the mercury method. The microstructure of weldments in different cooling condition was characterized by using the field-emission scanning electron microscope (FE-SEM) and optical microscope. The fractured tensile test samples were characterized using the FE-SEM. The maximum tensile strength was measured to be 624 MPa for air-cooling medium (very low level of diffusible hydrogen). © 2018 Sociedade Portuguesa de Materiais (SPM)
About the journal
JournalData powered by TypesetScience and Technology of Materials
PublisherData powered by TypesetElsevier Espana S.L.