TiAl合金粉末热等静压技术研究进展  

Research Progress of Powder Hot Isostatic Pressing for Intermetallic Titanium Aluminide

作　　者：王湘宁 朱郎平 余稳 丁贤飞 南海 Wang Xiangning;Zhu Langping;Yu Wen;Ding Xianfei;Nan Hai(AECC Beijing Institute of Aeronautical Materials,Beijing 100095,China;Beijing Engineering Research Center of Advanced Titanium Alloy Precision Forming Technology,Beijing 100095,China;State Key Laboratory of Materials Processing and Die&Mould Technology,Huazhong University of Science and Technology,Wuhan 430074,China)

机构地区：[1]中国航发北京航空材料研究院,北京100095 [2]北京市先进钛合金精密成型工程技术研究中心,北京100095 [3]华中科技大学材料成形与模具技术国家重点实验室,湖北武汉430074

出　　处：《稀有金属材料与工程》2021年第10期3797-3808,共12页Rare Metal Materials and Engineering

基　　金：国防基础科研项目(JCKY2017213B004);国家自然科学基金(51671026)。

摘　　要：TiAl合金具有高熔点、低密度、高比强度和良好的高温抗氧化、抗蠕变等性能,在航空航天及汽车发动机等领域应用前景广阔。粉末热等静压技术能够实现复杂形状TiAl合金零件的一体化成形,并且获得的零件晶粒细小、成分均匀、力学性能优异。本文介绍了TiAl合金雾化粉末制备原理与粉末热等静压致密化技术,评述了对TiAl合金雾化粉末及经过热等静压和热处理后组织和性能的研究进展,分析了TiAl合金粉末热等静压技术当前存在的一些问题,并对该技术的未来发展进行了展望。TiAl alloys have broad application prospects in aerospace and automobile engines,which is due to their excellent properties,such as high melting point,low density,high specific strength,good high temperature oxidation resistance and creep resistance.Powder hot isostatic pressing can realize the integral forming of TiAl alloy parts with complex shapes,and the obtained parts have small grain size,uniform composition and excellent mechanical properties.In this paper,the principle of powder preparation by atomizing and powder hot isostatic pressing of TiAl alloys were introduced.The research states of microstructures and properties in TiAl alloys after atomization process,powder hot isostatic pressing and heat treatments were summarized.Some current problems existed in TiAl alloy powder hot isostatic pressing technology were analyzed,and the future development of this technology was put forward.

关 键 词：TIAL合金 粉末冶金 雾化粉末 热等静压 

分 类 号：TG146.23[一般工业技术—材料科学与工程] TF12[金属学及工艺—金属材料]