Ductility and fracture toughness issues related to implementation of NiAl for gas turbine applications

被引：68

作者：

Darolia, R ^{[1
]}

机构：

[1] GE Aircraft Engines, Cincinnati, OH 45215 USA

来源：

INTERMETALLICS | 2000年 / 8卷 / 9-11期

关键词：

nickel aluminides; based on NiAl; fracture toughness;

D O I：

10.1016/S0966-9795(00)00081-9

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Progress made in improving properties of NiAl alloys to compete with single crystal Ni-base superalloys is described. NiAl turbine airfoils with complex design features were fabricated by a combination of casting and machining processes. Such airfoils were successfully component and engine tested. Key issues related to poor ductility and fracture toughness limiting the application of intermetallics are discussed. Progress made in resolving some of the issues is discussed. Some of the production implementation issues are also discussed. (C) 2000 Published by Elsevier Science Ltd.

引用

页码：1321 / 1327

页数：7

共 11 条

[1] THE EFFECT OF IRON, GALLIUM AND MOLYBDENUM ON THE ROOM-TEMPERATURE TENSILE DUCTILITY OF NIAL [J].