Evolution of the γ/γ′ interface width in a commercial nickel base superalloy studied by three-dimensional atom probe tomography
Evolution of the γ/γ′ interface width in a commercial nickel base superalloy studied by three-dimensional atom probe tomography
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DOI：
10.1016/j.scriptamat.2009.03.011
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发表时间：
2009-07-01
影响因子：
6
通讯作者：
Banerjee, R.
中科院分区：
文献类型：
--
作者：
Hwang, J. Y.;Nag, S.;Banerjee, R.
用三维原子探针层析术测定了一种工业镍基高温合金中γ/γ ′界面的成分宽度。最初，在连续冷却期间形成时，初级γ '沉淀物表现出尖锐的界面，而次级沉淀物表现出基本上扩散的界面。在随后的等温老化，界面宽度增加的初级γ '沉淀，而它减少的二次γ'沉淀，达到近平衡的两种类型的界面后，长期老化的宽度。(c)2009 Acta Materialia Inc.由爱思唯尔有限公司出版。保留所有权利。
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.