Evolution of the γ/γ′ interface width in a commercial nickel base superalloy studied by three-dimensional atom probe tomography

被引：51

作者：

Hwang, J. Y. ^{[1
]}

Nag, S. ^{[1
]}

Singh, A. R. P. ^{[1
]}

Srinivasan, R. ^{[2
]}

Tiley, J. ^{[3
]}

Fraser, H. L. ^{[2
]}

Banerjee, R. ^{[1
]}

机构：

[1] Univ N Texas, Dept Mat Sci & Engn, Ctr Adv Res & Technol, Denton, TX 76203 USA

[2] Ohio State Univ, Dept Mat Sci & Engn, Ctr Accelerated Maturat Mat, Columbus, OH 43210 USA

[3] USAF, Mat & Mfg Directorate, Res Lab, Dayton, OH USA

来源：

SCRIPTA MATERIALIA | 2009年 / 61卷 / 01期

关键词：

Three-dimensional atom probe (3DAP); Nickel superalloy; Interfaces; SIZE DISTRIBUTIONS; GAMMA'; MICROSCOPY; ALLOYS;

D O I：

10.1016/j.scriptamat.2009.03.011

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The compositional width of the gamma/gamma' interface in a commercial nickel base superalloy has been determined using three-dimensional atom probe tomography. Initially, on formation during continuous cooling, the primary gamma' precipitates exhibit a sharp interface while the secondary - precipitates exhibit a substantially diffuse interface. On subsequent isothermal aging, the interface width increases for the primary gamma' precipitates while it decreases for the secondary gamma' precipitates, reaching a near-equilibrium width for both types of interfaces after prolonged aging. (c) 2009 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：92 / 95

页数：4

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