Microstructure and mechanical properties of the superalloy ATI Allvac® 718Plus™

被引：43

作者：

Zickler, Gerald A. ^{[1
]}

Schnitzer, Ronald ^{[1
]}

Radis, Rene ^{[2
,3
]}

Hochfellner, Rainer ^{[1
]}

Schweins, Ralf ^{[4
]}

Stockinger, Martin ^{[5
]}

Leitner, Harald ^{[1
]}

机构：

[1] Univ Leoben, Dept Phys Met & Mat Testing, Christian Doppler Lab Early Stages Precipitat, A-8700 Leoben, Austria

[2] Vienna Univ Technol, Inst Mat Sci & Technol, Christian Doppler Lab Early Stages Precipitat, A-1040 Vienna, Austria

[3] Graz Univ Technol, Inst Mat Sci & Welding, A-8010 Graz, Austria

[4] Inst Max Von Laue Paul Langevin, DS LSS Grp, F-38042 Grenoble, France

[5] Bohler Schmiedetech GmbH & Co KG, A-8605 Kapfenberg, Austria

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2009年 / 523卷 / 1-2期

关键词：

Nickel-based superalloy; Precipitation kinetics; Atom probe tomography; Small-angle neutron scattering; Strengthening mechanism; ANGLE NEUTRON-SCATTERING; NI-AL ALLOYS; ATOM-PROBE TOMOGRAPHY; BASE SUPERALLOY; ELECTRON-MICROSCOPY; PHASE-SEPARATION; DELTA-PHASE; COARSENING KINETICS; GAMMA' PRECIPITATE; INCONEL-718; ALLOY;

D O I：

10.1016/j.msea.2009.06.014

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

ATI Allvac (R) 718Plus (TM) is a novel nickel-based superalloy, which was designed for heavy-duty applications in aerospace turbines. In the present study the high-resolution investigation techniques, atom probe tomography, electron microscopy and in situ high-temperature small-angle neutron scattering were used for a comprehensive microstructural characterization. The alloy contains nanometer-sized spherical gamma' phase precipitates (Ni(3)(Al,Ti)) and plate-shaped delta phase precipitates (Ni(3)Nb) of micrometer size. The precipitation kinetics of the gamma' phase can be described by a classical model for coarsening. The precipitation strongly influences the mechanical properties and is of high scientific and technological interest. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：295 / 303

页数：9

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