点击次数：

论文类型：期刊论文

发表时间：2009-10-01

发表刊物：TRANSACTIONS OF THE INDIAN INSTITUTE OF METALS

收录刊物：SCIE

卷号：62

期号：4-5

页面范围：479-483

ISSN号：0019-493X

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

摘要：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.