Boron effects on the ductility of a nano-cluster-strengthened ferritic steel

Z. W. Zhang; C. T. Liu; S. Guo; J. L. Cheng; G. Chen; Takeshi Fujita; M. W. Chen; Yip Wah Chung; Semyon Vaynman; Morris E. Fine; Bryan A. Chin

doi:10.1016/j.msea.2010.10.058

Boron effects on the ductility of a nano-cluster-strengthened ferritic steel

Z. W. Zhang, C. T. Liu^*, S. Guo, J. L. Cheng, G. Chen, Takeshi Fujita, M. W. Chen, Yip Wah Chung, Semyon Vaynman, Morris E. Fine, Bryan A. Chin

^*Corresponding author for this work

Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

29 Scopus citations

Abstract

The mechanical properties of Cu-rich nano-cluster-strengthened ferritic steels with and without boron doping were investigated. Tensile tests at room temperature in air showed that the B-doped ferritic steel has similar yield strength but a larger elongation than that without boron doping after extended aging at 500 °C. There are three mechanisms affecting the ductility and fracture of these steels: brittle cleavage fracture, week grain boundaries, and moisture-induced hydrogen embrittlement. Our study reveals that boron strengthens the grain boundary and suppresses the intergranular fracture. Furthermore, the moisture-induced embrittlement can be alleviated by surface coating with vacuum oil.

Original language	English (US)
Pages (from-to)	855-859
Number of pages	5
Journal	Materials Science and Engineering A
Volume	528
Issue number	3
DOIs	https://doi.org/10.1016/j.msea.2010.10.058
State	Published - Jan 25 2011

Keywords

Boron doping
Ductility
Ferritic steel
Moisture-induced embrittlement
Nano-cluster

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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10.1016/j.msea.2010.10.058

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@article{c7049268e8684e6b94ea159b505ec095,

title = "Boron effects on the ductility of a nano-cluster-strengthened ferritic steel",

abstract = "The mechanical properties of Cu-rich nano-cluster-strengthened ferritic steels with and without boron doping were investigated. Tensile tests at room temperature in air showed that the B-doped ferritic steel has similar yield strength but a larger elongation than that without boron doping after extended aging at 500 °C. There are three mechanisms affecting the ductility and fracture of these steels: brittle cleavage fracture, week grain boundaries, and moisture-induced hydrogen embrittlement. Our study reveals that boron strengthens the grain boundary and suppresses the intergranular fracture. Furthermore, the moisture-induced embrittlement can be alleviated by surface coating with vacuum oil.",

keywords = "Boron doping, Ductility, Ferritic steel, Moisture-induced embrittlement, Nano-cluster",

author = "Zhang, {Z. W.} and Liu, {C. T.} and S. Guo and Cheng, {J. L.} and G. Chen and Takeshi Fujita and Chen, {M. W.} and Chung, {Yip Wah} and Semyon Vaynman and Fine, {Morris E.} and Chin, {Bryan A.}",

note = "Funding Information: This research was supported mainly by internal funding from Auburn University and Hong Kong polytechnic University , together with the Science and Technology Development Foundation of Nanjing University of Science and Technology of China ( XKF09055 ), the National Natural Sciences Foundation of China (No. 50871054 ), the Research Fund for the Doctoral Program of Higher Education of China ( 20093219110035 ), and the US National Science Foundation ( CMMI-0826535 ).",

year = "2011",

month = jan,

day = "25",

doi = "10.1016/j.msea.2010.10.058",

language = "English (US)",

volume = "528",

pages = "855--859",

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T1 - Boron effects on the ductility of a nano-cluster-strengthened ferritic steel

AU - Zhang, Z. W.

AU - Liu, C. T.

AU - Guo, S.

AU - Cheng, J. L.

AU - Chen, G.

AU - Fujita, Takeshi

AU - Chen, M. W.

AU - Chung, Yip Wah

AU - Vaynman, Semyon

AU - Fine, Morris E.

AU - Chin, Bryan A.

N1 - Funding Information: This research was supported mainly by internal funding from Auburn University and Hong Kong polytechnic University , together with the Science and Technology Development Foundation of Nanjing University of Science and Technology of China ( XKF09055 ), the National Natural Sciences Foundation of China (No. 50871054 ), the Research Fund for the Doctoral Program of Higher Education of China ( 20093219110035 ), and the US National Science Foundation ( CMMI-0826535 ).

PY - 2011/1/25

Y1 - 2011/1/25

N2 - The mechanical properties of Cu-rich nano-cluster-strengthened ferritic steels with and without boron doping were investigated. Tensile tests at room temperature in air showed that the B-doped ferritic steel has similar yield strength but a larger elongation than that without boron doping after extended aging at 500 °C. There are three mechanisms affecting the ductility and fracture of these steels: brittle cleavage fracture, week grain boundaries, and moisture-induced hydrogen embrittlement. Our study reveals that boron strengthens the grain boundary and suppresses the intergranular fracture. Furthermore, the moisture-induced embrittlement can be alleviated by surface coating with vacuum oil.

AB - The mechanical properties of Cu-rich nano-cluster-strengthened ferritic steels with and without boron doping were investigated. Tensile tests at room temperature in air showed that the B-doped ferritic steel has similar yield strength but a larger elongation than that without boron doping after extended aging at 500 °C. There are three mechanisms affecting the ductility and fracture of these steels: brittle cleavage fracture, week grain boundaries, and moisture-induced hydrogen embrittlement. Our study reveals that boron strengthens the grain boundary and suppresses the intergranular fracture. Furthermore, the moisture-induced embrittlement can be alleviated by surface coating with vacuum oil.

KW - Boron doping

KW - Ductility

KW - Ferritic steel

KW - Moisture-induced embrittlement

KW - Nano-cluster

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JO - Materials Science and Engineering A

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Boron effects on the ductility of a nano-cluster-strengthened ferritic steel

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Keywords

ASJC Scopus subject areas

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