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| Study on microstructure and properties of high borated steel |
| PEI Yanbin1，2，3，WANG Tiejun4，GE Qilu1，QU Xuanhui2 |
| （1. Central Iron & Steel Research Institute, Beijing 100081, China; 2. Institute for Advanced Materials and Tech‐
nology, The University of Science and Technology Beijing, Beijing 100083, China; 3. Antai-heyuan Nuclear En‐
ergy Technology & Materials Co., Beijing 100094, China; 4. Advanced Technology & Materials Co., Ltd., Bei‐
jing 100081, China;） |
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Abstract High borated steel with boron content of 1.04%, 1.50% and 1.9% were prepared by powder metallurgy
and casting process. The microstructure, phase, distribution of boron element and their effects on the properties of
the alloy were studied. The results show that the distribution of boron element in the alloy prepared by powder
metallurgy is uniform, while the boron element in the casting alloy segregated at the grain boundary, so the plas‐
ticity of the alloy prepared by the former is obviously better than the latter. The linear expansion coefficient and
thermal conductivity of the alloy were measured. The properties of 304B7 high boron steel are similar to those of
304 stainless steel.
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Received: 29 March 2021
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2022, Vol. 32 
