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Indexed by:期刊论文

Date of Publication:2009-10-01

Journal:TRANSACTIONS OF THE INDIAN INSTITUTE OF METALS

Included Journals:SCIE

Volume:62

Issue:4-5

Page Number:479-483

ISSN No.:0019-493X

Key Words:low energy high current pulsed electron beam (LEHCPEB); AISI D2 steel; Electron backscattered diffraction (EBSD); Phase transformation

Abstract:This paper gives a detailed analysis of the rapidly solidified layers formed by low energy high current pulsed electron beam (LEHCPEB) on a D2 steel. The results of electron backscattering diffraction (EBSD) measurements revealed that the microstructures and phase components of the steel vary dramatically through the melted layer and the heat affected zone. The exact nature of the graded structure also changes with the number of pulses. The phase transformation paths, which vary with depth and in different areas (close to or far away from the carbides) of the melted layer, are determined by local composition gradients induced by the LEHCPEB treatment.