Identification of Mo-Rich M23C6 Carbides in Alloy 718

被引：19

作者：

Aghajani, Ali ^{[1
,2
]}

Tewes, Juergen ^{[1
]}

Parsa, Alireza Basir ^{[4
]}

Hoffmann, Thorsten ^{[1
]}

Kostka, Alexander ^{[4
]}

Kloewer, Jutta ^{[3
]}

机构：

[1] VDM Met GmbH, Werdohl, Germany

[2] Outokumpu Nirosta GmbH, Dusseldorf, Germany

[3] VDM Met GmbH, R&D Dept, Werdohl, Germany

[4] Ruhr Univ Bochum, Bochum, Germany

来源：

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE | 2016年 / 47A卷 / 09期

关键词：

STRAIN-INDUCED PRECIPITATION; FATIGUE-CRACK GROWTH; DELTA-PHASE PRECIPITATION; NICKEL-BASE SUPERALLOY; MECHANICAL-PROPERTIES; DYNAMIC RECRYSTALLIZATION; HYDROGEN EMBRITTLEMENT; BEHAVIOR; MICROSTRUCTURE; DEFORMATION;

D O I：

10.1007/s11661-016-3593-5

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In the present study, we systematically identify and characterize a (Nb, Mo)-rich M23C6 type of M23C6 carbide with a lattice parameter of 1.094 nm in alloy 718 for the first time using a combination of selected area electron diffraction pattern and powder X-ray diffraction analysis. The time-temperature-precipitation diagrams of the precipitates in both annealed and strained conditions are obtained by particle analysis using an automated scanning electron microscopy method. (Nb, Mo)-rich M23C6 carbides first precipitate after 24 hours at 1223 K (950 A degrees C) annealing, while they form after 10 minutes at 1273 K (1000 A degrees C) in the strained condition. This correlates with the excess dislocations produce during deformation.

引用

页码：4382 / 4392

页数：11

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