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Metals 2016, 6(1), 18; doi:10.3390/met6010018

Study on Sintering Mechanism of Stainless Steel Fiber Felts by X-ray Computed Tomography

State Key Laboratory of Porous Metal Materials, Northwest Institute for Nonferrous Metal Research, Xi’an 710016, China
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Academic Editor: Klaus-Dieter Liss
Received: 1 October 2015 / Revised: 31 December 2015 / Accepted: 4 January 2016 / Published: 13 January 2016
(This article belongs to the Special Issue Metals Challenged by Neutron and Synchrotron Radiation)
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Abstract

The microstructure evolution of Fe-17 wt. % Cr-12 wt. % Ni-2 wt. % Mo stainless steel fiber felts during the fast sintering process was investigated by the synchrotron radiation X-ray computed tomography technique. The equation of dynamics of stable inter-fiber neck growth was established for the first time based on the geometry model of sintering joints of two fibers and Kucsynski’s two-sphere model. The specific evolutions of different kinds of sintering joints were observed in the three-dimensional images. The sintering mechanisms during sintering were proposed as plastic flow and grain boundary diffusion, the former leading to a quick growth of sintering joints. View Full-Text
Keywords: metal fiber; sintering mechanism; X-ray tomography; three-dimensional structure metal fiber; sintering mechanism; X-ray tomography; three-dimensional structure
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Ma, J.; Li, A.; Tang, H. Study on Sintering Mechanism of Stainless Steel Fiber Felts by X-ray Computed Tomography. Metals 2016, 6, 18.

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