Simultaneously enhanced strength and ductility of titanium via multimodal grain structure
Simultaneously enhanced strength and ductility of titanium via multimodal grain structure
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DOI：
10.1016/j.scriptamat.2010.07.010
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发表时间：
2010-11
影响因子：
6
通讯作者：
Dengke Yang;P. Hodgson;C. Wen
中科院分区：
文献类型：
--
作者：
Dengke Yang;P. Hodgson;C. Wen
采用低温冷轧和低温退火法成功地制备出具有多峰晶态结构的工业钛。这种多峰晶态组织钛具有高屈服强度(926 Mpa)、11%的均匀延伸率和23%的断裂延伸率的组合。强度的提高主要来源于超细等轴晶，而塑性的提高主要来源于大比例的大角度晶界和多峰晶界组织。
Commercial Ti with a multimodal grain structure was successfully produced using cryorolling, followed by low-temperature annealing. This multimodal grain structure Ti exhibited a combination of high yield strength (926MPa), a uniform elongation of 11% and a failure elongation of 23%. The strength enhancement was mainly derived from the ultrafine equiaxed grains, while the improved ductility originated from the large fraction of high-angle grain boundaries and the multimodal grain structure.