Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/17141
Title: Boron effects on the ductility of a nano-cluster-strengthened ferritic steel
Authors: Zhang, ZW
Liu, CT
Guo, S
Cheng, JL
Chen, G
Fujita, T
Chen, MW
Chung, YW
Vaynman, S
Fine, ME
Chin, BA
Keywords: Boron doping
Ductility
Ferritic steel
Moisture-induced embrittlement
Nano-cluster
Issue Date: 2011
Publisher: Elsevier
Source: Materials science and engineering. A, Structural materials : properties, microstructure and processing, 2011, v. 528, no. 3, p. 855-859 How to cite?
Journal: Materials science and engineering. A, Structural materials : properties, microstructure and processing 
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.
URI: http://hdl.handle.net/10397/17141
ISSN: 0921-5093
EISSN: 1873-4936
DOI: 10.1016/j.msea.2010.10.058
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