Microstructural evolution of Udimet 720 superalloy

被引：28
|
作者：
Calliari, I [1 ]
Magrini, M [1 ]
Dabalà, M [1 ]
机构：
[1] Univ Padua, Dept Mech & Management Innovat, I-35141 Padua, Italy
来源：
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE | 1999年 / 8卷 / 01期
关键词：
heat treatments; nickel-base superalloys; phase extraction; scanning electron microscopy; transmission electron microscopy; Udimet; 720;
D O I：
10.1361/105994999770347250
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The microstructural evolution of the nickel-base superalloy Udimet 720 (Special Metals Corp., New Hartford, NY) aged at 850 degrees C for 1000 to 2000 h is presented. After aging, the gamma precipitates change from cubic to globular morphology. Secondary gamma particles and topologically close-packed phases were not found. The gamma mean diameter increases with aging times, following the Lifshitz-Wagner model. The experimented aging times have no strong effects on mechanical properties of Udimet 720.
引用
收藏
页码：111 / 115
页数：5
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