摘要
介绍了深冷处理技术的含义及其对铝合金、镁合金、铜合金、高熵合金等的改性效果,重点介绍了深冷处理钛合金的研究进展和改性机理。研究表明,深冷处理对钛合金组织和性能具有显著的改性效果,具有细化晶粒、提高位错密度、促进孪晶和亚晶组织生成、促进相转变和相析出,并促进织构生成等作用,通过细晶强化、位错强化、析出强化、织构强化等机制提升了钛合金的强韧性能,通过对参数的优化可以实现强度和延伸率的同步提升。综合认为深冷处理钛合金是具有“高性能、高质量、低成本、低污染”的钛合金固态处理新方法和新技术。
This paper introduces the meaning of cryogenic treatment technology and its modification effect on aluminum alloy,magnesium alloy,copper alloy and high-entropy alloy,and focuses on the research progress and modification mechanism in the deep cryogenic treated titanium alloy.It shows that cryogenic treatment has a significant modified effect on the microstructure and properties of titanium alloy.It can refine grain size,improve dislocation density,promote the formation of twin and sub-crystal structure,promote phase transformation and phase precipitation,and promote the formation of texture,and enhance the strength and toughness of titanium alloy through the mechanism of fine grain strengthening,dislocation strengthening,precipitation strengthening,texture strengthening and so on.The strength and toughness of titanium alloy can be improved synchronously by optimizing the parameters of deep cryogenic treatment.In conclusion,deep cryogenic treatment on titanium alloy is a new method and technology for solid state treatment with“high performance,high quality,low cost and low pollution”characteristic.
作者
纪志军
李桂荣
叶宇融
南海
曹自立
王宏明
JI Zhijun;LI Guirong;YE Yurong;NAN Hai;CAO Zili;WANG Hongming(AECC Beijing Institute of Aeronautical Materials,Beijing 100095,China;Baimtec Material Co.,Ltd,Beijng 100094,China;Beijing Engineering Research Center of Advanced Titanium Alloy Precision Forming Technology,Beijing 100095,China;Jiangsu University,Zhenjiang 212013,China)
出处
《航空制造技术》
CSCD
北大核心
2022年第11期70-75,共6页
Aeronautical Manufacturing Technology
基金
国家重点研发计划(2020YFB2008300)。
关键词
深冷处理
钛合金
位错
细晶
强韧性
Deep cryogenic treatment
Titanium alloy
Dislocation
Grain refinement
Mechanical properties
