低温钛合金的研究进展

Research Progress in Titanium Alloys at Cryogenic Temperatures

摘要:

因具有优异的低温综合性能，钛合金作为重要的低温工程材料而逐渐受到广泛的重视。本文概述了当前国际低温钛合金的应用现状，从α钛合金、α/β两相钛合金及β钛合金方面，综述了钛合金的低温变形机制的最新研究进展，并总结了这三类不同相组分的钛合金的低温变形机制。从温度、合金成分、形变因素和显微组织方面，归纳总结了不同因素对钛合金低温塑性变形机制的影响。另外，还探讨了低温钛合金的发展趋势，以期为新型综合性能更好的低温钛合金的设计和研发提供参考。

Abstract:

Because of their excellent low temperature comprehensive properties, titanium alloys have gradually attracted considerable attention as important engineering materials at low temperatures. The application situation of titanium alloys at cryogenic temperatures in recent years is critically reviewed. The recent progress of deformation mechanisms of titanium alloys at low temperatures, including alpha titanium alloys, alpha/ beta double phases and beta titanium alloys, is then overviewed and concluded. Different influences of temperatures, alloy composition, deformation factors and microstructure on plastic deformation mechanisms of titanium alloys at cryogenic temperatures are summarized. Finally, the development trend of titanium alloys used at cryogenic temperatures is also discussed, in order to provide some valuable references to design and explore new titanium alloys with better comprehensive performance at cryogenic temperatures.