About the possibility of grain boundary engineering via hot-working in a nickel-base superalloy

被引：70

作者：

Souai, N. ^{[1
,2
]}

Bozzolo, N. ^{[1
]}

Naze, L. ^{[2
]}

Chastel, Y. ^{[1
]}

Loge, R. ^{[1
]}

机构：

[1] Mines ParisTech, CEMEF, Ctr Mise Forme Mat, F-06904 Sophia Antipolis, France

[2] Mines ParisTech, Ctr Mat, PM Fourt, F-91003 Evry, France

来源：

SCRIPTA MATERIALIA | 2010年 / 62卷 / 11期

关键词：

Nickel-base superalloy; Grain boundary engineering; Hot-working; Annealing twins; BEHAVIOR;

D O I：

10.1016/j.scriptamat.2010.02.019

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Microstructures, and especially grain boundary populations, are characterized in a gamma/gamma' nickel-base superalloy submitted to various thermomechanical treatments involving hot deformation and subsequent supersolvus annealing. The resulting microstructures consist of equiaxed grains, including twins. Both the grain size and the amount of twin boundaries are dependent on the processing parameters, which demonstrates that grain boundary engineering is applicable to those materials. The mechanisms involved are discussed, taking into account the hot-working conditions. (C) 2010 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：851 / 854

页数：4

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