Effect of Boron on Microstructure and Properties of Ultra-Low Carbon Steel
The effect of boron on microstructure, mechanical property and conductivity of ultra-low carbon steel wire rod with diameter 6.5 mm was studied. The results show that boron has little influence on the grain size and mechanical property of ultra-low carbon steel wire rod when adding 0.0020% boron alo...
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Published in | IOP conference series. Materials Science and Engineering Vol. 774; no. 1; pp. 12023 - 12026 |
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Main Authors | , , |
Format | Journal Article |
Language | English |
Published |
Bristol
IOP Publishing
01.03.2020
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Subjects | |
Online Access | Get full text |
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Summary: | The effect of boron on microstructure, mechanical property and conductivity of ultra-low carbon steel wire rod with diameter 6.5 mm was studied. The results show that boron has little influence on the grain size and mechanical property of ultra-low carbon steel wire rod when adding 0.0020% boron alone and under the same process conditions; but when 0.0055% boron is added, the ASTM grain size number of the wire rod is coarsened from the 7.5 grade to 6 grade, at the same time, the tensile strength is reduced by 20 MPa and the electrical conductivity is increased from 16.2%IACS to 16.3%IACS. The effect of Boron on tensile strength is mainly caused by coarsening grain diameter. The effect of boron on grain diameter is related to [B]/[N], when the [B]/[N] is relatively high(for example 1.34), the grain diameter growth is obvious, conversely, when the [B]/[N] is relatively low(for example 0.44), the grain diameter growth is not obvious. |
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ISSN: | 1757-8981 1757-899X |
DOI: | 10.1088/1757-899X/774/1/012023 |