Microstructural evolution of Udimet 720 superalloy

被引：29

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

页码：111 / 115

页数：5

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