PRECIPITATION KINETICS IN N18 P/M SUPERALLOY - EXPERIMENTAL-STUDY AND NUMERICAL MODELING

被引：10

作者：

GAYRAUD, N ^{[1
]}

MORET, F ^{[1
]}

BAILLIN, X ^{[1
]}

MOSSER, PE ^{[1
]}

机构：

[1] SNECMA,F-92230 GENNEVILLIERS,FRANCE

来源：

JOURNAL DE PHYSIQUE IV | 1993年 / 3卷 / C7期

关键词：

D O I：

10.1051/jp4:1993743

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Heat treatments of aeronautical turbine disks produced by powder metallurgy include gamma' solutionning, quenching and subsequent annealing. In the present work, the intragranular gamma' precipitation kinetics during the quench has been followed by dilatometry and transmission electron microscopy. the precipitation steps are studied on specimens ''hyperquenched'' from selected temperatures during a simulated industrial quench. Experimental results are compared with a pseudo-binary model based on classical homogeneous nucleation and coarsening theories. While the precipitate volume fraction is lower than 20%, a good quantitative agreement is observed.

引用

页码：271 / 276

页数：6

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