Static recrystallization behavior of AEREX350 superalloy

被引：8

作者：

Hosseinifar, Mehdi ^{[1
]}

Asgari, Sirous ^{[1
]}

机构：

[1] Sharif Univ Technol, Dept Mat Sci & Engn, Tehran, Iran

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2010年 / 527卷 / 27-28期

关键词：

AEREX; 350; superalloy; Grain boundary pinning; Cellular recrystallization; ALLOY; MICROSTRUCTURE; INTERFACES; KINETICS;

D O I：

10.1016/j.msea.2010.08.005

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The recrystallization behavior of a commercial nickel-cobalt base superalloy, AEREX 350, is investigated by means of hardness test, X-ray diffraction, and microscopy. It is found that the alloy resists recrystallization up to a high temperature of 1025 degrees C. Recrystallized grains are readily formed at grain boundaries below this temperature; however, the growth of these new grains is inhibited by Widmanstatten eta particles having coherent facets with the nickel matrix (gamma). The passage of the recrystallization front results in coherency loss and consequently dissolution of the eta platelets. Recrystallization proceeds with a discontinuous precipitation of the eta phase behind the moving boundary. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：7313 / 7317

页数：5

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