Experimental Observation of Non-equilibrium Segregation of Boron on Grain Boundaries during Cooling Process

WU Ping; HE Xinlai; CAO Bing; YU Dongyou

doi:10.13374/j.issn1001-053x.2002.01.037

Volume 24 Issue 1

Aug. 2021

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WU Ping, HE Xinlai, CAO Bing, YU Dongyou. Experimental Observation of Non-equilibrium Segregation of Boron on Grain Boundaries during Cooling Process[J]. Chinese Journal of Engineering, 2002, 24(1): 29-33. doi: 10.13374/j.issn1001-053x.2002.01.037

Citation:

WU Ping, HE Xinlai, CAO Bing, YU Dongyou. Experimental Observation of Non-equilibrium Segregation of Boron on Grain Boundaries during Cooling Process[J]. Chinese Journal of Engineering, 2002, 24(1): 29-33. doi: 10.13374/j.issn1001-053x.2002.01.037

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Experimental Observation of Non-equilibrium Segregation of Boron on Grain Boundaries during Cooling Process

doi: 10.13374/j.issn1001-053x.2002.01.037

Material Science and Engineering School, UST Beijing, Beijing 100083, China

Received Date: 2001-03-10
Available Online: 2021-08-21

Abstract

Abstract

It was observed experimentally that boron segregated to grain boundaries in Fe-40%Ni alloy during cooling process by boron autoradiograph technique and transmission electron microscope. The non-equilibrium segregation of boron on grain boundaries during cooling process from 1150 to 640 ℃ at 2 ℃/s shows three stages with different boron diffusion behaviors. The rich factors, widths of rich layer, depletion factors and widths of boron depletion zone were measured. The phenomena are discussed.
- boron,
- grain boundary,
- diffusion,
- non-equilibrium segregation