Characterization of the effects of boron and phosphorus additions to the nickel-based superalloy 718

被引：30

作者：

Miller, MK ^{[1
]}

Horton, JA ^{[1
]}

Cao, WD ^{[1
]}

Kennedy, RL ^{[1
]}

机构：

[1] TELEDYNE ALLVAC,MONROE,NC 28110

来源：

JOURNAL DE PHYSIQUE IV | 1996年 / 6卷 / C5期

关键词：

D O I：

10.1051/jp4:1996539

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The effects of controlled additions of boron and phosphorus to Alloy IN-718 have been investigated by atom probe field ion microscopy and transmission electron microscopy. Boron and phosphorous additions are known to improve the creep rupture properties of IN-718. Significant enrichments of boron, phosphorus and carbon were measured at the grain boundaries. Some fine phosphide precipitates were also observed at the grain boundaries. No enrichment of boron or phosphorus was observed at gamma' or gamma '' interfaces. However, the boron and phosphorus additions did slightly increase the stability of the gamma '' precipitates after long term ageing at 704 degrees C.

引用

页码：241 / 246

页数：6

共 11 条

[1] PHASE-COMPOSITION AND GRAIN-BOUNDARY SEGREGATION IN A NICKEL-BASE SUPERALLOY - A PRELIMINARY TEM-APFIM INVESTIGATION [J].