Paper Title:
Microstructure of Fe-Based ODS High-Temperature Alloy Sheet Prepared by EBPVD
  Abstract

Large-sized Fe-based ODS (Oxide Dispersive Strengthen) high-temperature alloy sheets were successfully synthesized by EBPVD (Electron Beam Physical Vapor Deposition) technique. The sheets were about 120μm thick, and having a diameter of 1000mm, whose surface roughness was less than 1μm (Ra<1μm). The microstructures were examined by SEM (Scanning Electron Microscope). The grain size was 1-4μm. When the substrate temperature was 600°C, the sheet had sharp irregular polyhedral grain, and when the substrate temperature was 700°C the sheet had quite regular grains. The morphological orientation angle increased with the distance from the center of the sheet. During the first period of deposition, the sheet was growing in a G-L-S mode, which corresponded with the corn-like microstructure in the cross-section. While during the final period, the sheet changed into a G-S growing mode, which corresponded to the smooth columnar microstructure.

  Info
Periodical
Key Engineering Materials (Volumes 353-358)
Edited by
Yu Zhou, Shan-Tung Tu and Xishan Xie
Pages
1637-1640
DOI
10.4028/www.scientific.net/KEM.353-358.1637
Citation
X. Lin, Y. Sun, G. P. Song, X. D. He, "Microstructure of Fe-Based ODS High-Temperature Alloy Sheet Prepared by EBPVD", Key Engineering Materials, Vols. 353-358, pp. 1637-1640, 2007
Online since
September 2007
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Price
$32.00
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