摘要
通过剧烈塑性变形(SPD)技术制备的超细晶钛及钛合金,不仅具有优异的力学性能,其腐蚀性能也与普通粗晶材料明显不同。概述了通过SPD制备的超细晶钛及钛合金的组织特点,从实现超细化前后耐蚀性能的变化方面,介绍了国内外关于超细晶钛及钛合金腐蚀性能的最新研究进展。从位错密度、织构及晶粒尺寸分布等方面,归纳总结了不同因素对超细晶钛及钛合金腐蚀性能的影响。此外,还探讨了未来超细晶钛及钛合金腐蚀行为的研究方向,以期为研制兼具高强度和优良耐蚀性的新型材料提供借鉴。
Ultrafine grained titanium prepared by severe plastic deformation( SPD) technique not only has excellent mechanical properties,but also demonstrates obviously different corrosion behavior compared with conventional coarse grained materials. The microstructure characteristics of UFG titanium prepared by SPD were summarized. And the recent progress on the corrosion behavior of UFG titanium at home and abroad was introduced in terms of the corrosion behavior changes before and after SPD treatment. The effects of dislocation density,texture and grain size distribution on the corrosion resistance of UFG titanium were summarized. In addition,the future research direction of the corrosion behavior of UFG titanium was also discussed in order to provide a reference for the development of new materials with high strength and excellent corrosion resistance.
引文
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