ORDERED INTERMETALLIC ALLOYS .3. GAMMA-TITANIUM ALUMINIDES
ORDERED INTERMETALLIC ALLOYS .3. GAMMA-TITANIUM ALUMINIDES
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DOI：
10.1007/bf03220745
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发表时间：
1994-07-01
期刊：
影响因子：
--
通讯作者：
KIM, YW
中科院分区：
文献类型：
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作者：
KIM, YW
过去八年的广泛研究导致了具有工程重要性的第二代伽马合金 Ti-48Al-2(Cr 或 Mn)-2Nb 及其衍生物的开发和改进。这些合金具有双相微观结构形式的特性，可满足某些可在高达 760 摄氏度的温度下使用的燃气轮机和汽车发动机部件的要求。这些成就是通过更好地了解这些铝化物的基本和实际方面而实现的，例如相关系、微观结构演化和控制、加工、微观结构-性能关系以及变形和断裂过程。然而，除非当前性能得到显着改善，否则这些合金不太可能获得广泛的更高性能和/或更高温度应用。
Extensive research during the last eight years has resulted in the development and improvement of second-generation gamma alloys of engineering importance, Ti-48Al-2(Cr or Mn)-2Nb and derivatives. These alloys exhibit properties, in duplex microstructural forms, meeting requirements for some gas-turbine and automobile engine components that may be used up to 760-degrees-C. These achievements were made possible by an improved understanding of both fundamental and practical aspects of these aluminides, such as phase relations, microstructure evolution and control, processing, microstructure-property relationships, and deformation and fracture processes. Nevertheless, widespread higher performance and/or higher-temperature applications of these alloys appear unlikely unless the current properties are dramatically improved.