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Evolution of microstructural characteristic and tensile properties during preparation of TiB/Ti composite sheet
Highlights ► Microstructure and tensile properties during preparing TiB/Ti composite sheet are evaluated. ► Significant reduction in aspect ratio of TiB and α lath width is observed. ► TiB/Ti composite sheet exhibits an excellent balance of strength and elongation. ► Fracture mechanisms change during the preparation of TiB/Ti composite sheet.
Abstract In this work, 7.5vol.% TiB/Ti composite sheet was prepared by casting route then 1-D forging followed by multi-step rolling. Evolution of microstructural characteristic and tensile properties during preparation of TiB/Ti composite sheet was experimentally investigated. The results indicate that as-cast microstructure of TiB/Ti composite can be significantly modified by thermomechanical processing. The initially randomly distributed TiB whiskers within the as cast composite fracture and align during preparing TiB/Ti composite sheet. Reduction in aspect ratio of TiB and α lath width is observed as well. Evolution of tensile properties reveals that the limited strength and low elongation of as cast TiB/Ti composite increase significantly during preparing TiB/Ti composite sheet. The TiB/Ti composite sheet exhibits an excellent balance of strength and elongation to failure. Additionally, the brittle cleavage fracture mode of as-cast TiB/Ti composite changes to a combination of brittle and plastic fracture mode during the preparation of TiB/Ti composite sheet.
Evolution of microstructural characteristic and tensile properties during preparation of TiB/Ti composite sheet
Highlights ► Microstructure and tensile properties during preparing TiB/Ti composite sheet are evaluated. ► Significant reduction in aspect ratio of TiB and α lath width is observed. ► TiB/Ti composite sheet exhibits an excellent balance of strength and elongation. ► Fracture mechanisms change during the preparation of TiB/Ti composite sheet.
Abstract In this work, 7.5vol.% TiB/Ti composite sheet was prepared by casting route then 1-D forging followed by multi-step rolling. Evolution of microstructural characteristic and tensile properties during preparation of TiB/Ti composite sheet was experimentally investigated. The results indicate that as-cast microstructure of TiB/Ti composite can be significantly modified by thermomechanical processing. The initially randomly distributed TiB whiskers within the as cast composite fracture and align during preparing TiB/Ti composite sheet. Reduction in aspect ratio of TiB and α lath width is observed as well. Evolution of tensile properties reveals that the limited strength and low elongation of as cast TiB/Ti composite increase significantly during preparing TiB/Ti composite sheet. The TiB/Ti composite sheet exhibits an excellent balance of strength and elongation to failure. Additionally, the brittle cleavage fracture mode of as-cast TiB/Ti composite changes to a combination of brittle and plastic fracture mode during the preparation of TiB/Ti composite sheet.
Evolution of microstructural characteristic and tensile properties during preparation of TiB/Ti composite sheet
Zhang, Changjiang (author) / Kong, Fantao (author) / Xiao, Shulong (author) / Niu, Hongzhi (author) / Xu, Lijuan (author) / Chen, Yuyong (author)
2011-11-25
6 pages
Article (Journal)
Electronic Resource
English
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