Paper Title:
Influence of Crystallography on Nucleation of Ferrite Precipitates at Austenite Grain Boundary Corners in a Co-15Fe Alloy
  Abstract

The nucleation of bcc ferrite precipitates at austenite grain corners in a Co-15Fe alloy was studied by serial sectioning coupled with electron backscatter diffraction (EBSD) analysis. Grain corners were identified by recombination of triple points and triangular annihilation, whereas quite a few precipitates were surrounded by more than four matrix grains when twins were counted as individual grains. More than 40% of corners composed all of high angle grain boundaries were vacant at an undercooling of ~60°C from the g/(a+g) phase boundary. All the precipitates had K-S or N-W orientation relationship with at least one grain and a larger proportion of them had the OR with two and three grains. For half of vacant corners a hypothetical precipitate could have the OR with more than one grain. It is likely that not only the misorientations among the matrix grains, but also the orientations of the grain boundary planes have a major influence on nucleation potency even at grain corners.

  Info
Periodical
Solid State Phenomena (Volumes 172-174)
Edited by
Yves Bréchet, Emmanuel Clouet, Alexis Deschamps, Alphonse Finel and Frédéric Soisson
Pages
378-383
DOI
10.4028/www.scientific.net/SSP.172-174.378
Citation
G. H. Zhang, T. Takeuchi, M. Enomoto, Y. Adachi, "Influence of Crystallography on Nucleation of Ferrite Precipitates at Austenite Grain Boundary Corners in a Co-15Fe Alloy", Solid State Phenomena, Vols. 172-174, pp. 378-383, 2011
Online since
June 2011
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Ran Zhou, Qing He, Jie Wu, Chao Hu, Q. H. Meng
Abstract:This paper proposes a novel inner and outer eye corners detection method, which inosculates corner, regional texture and gray information,...
1966
Authors: Yue Chao Chen, Chen Long Yang, Zhao Li, Hui Feng Zheng
Chapter 15: Materials and Processing Technologies
Abstract:The compare of distribution and morphology for the pores in the CFRP laminates and the corner of L-shape CFRP components is analyzed, and the...
2743
Authors: Kun Jiang, Hua Zhang, Wen Hui Zhou, Wei Zhong Yao
Chapter 5: Signal and Image Processing, Intelligent Recognition, Intelligent Algorithms and Methods, Сomputational Mathematics
Abstract:Images taken by wide-angle cameras tend to have severe distortions which pull points towards the optical center. Matlab calibration toolbox...
818