Journal
INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS
Volume 22, Issue 5, Pages 492-499Publisher
SPRINGER
DOI: 10.1007/s12613-015-1098-7
Keywords
boron steel; laminated materials; titanium; boride; hot rolling; heat treatment
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High-boron steel is an important material used for thermal neutron shielding. The appropriate amount of added boron must be determined because excessive boron may deteriorate the steel's workability. A uniform microstructure can be formed by adding titanium to boron steel. In this study, casting and hot rolling were used to fabricate laminated high-boron steel plates whose cores contained 2.25wt% boron and 0wt%-7.9wt% titanium. The effects of titanium content and hot-rolling and heat-treatment processes on the microstructure and properties of the laminated plates were studied. The results indicated that the optimum titanium content was 5.7wt% when the boron content was 2.25wt%, and that the best overall properties were obtained after heat treatment at 1100A degrees C for 4 h. The tensile strength, yield strength, and elongation at the specified temperature and holding time were as high as 526.88 MPa, 219.36 MPa, and 29%, respectively.
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