High temperature air oxidation behavior of Hastelloy X processed by Electron Beam Melting (EBM) and Selective Laser Melting (SLM)

被引：40
|
作者：
Romedenne, M. [1 ]
Pillai, R. [1 ]
Kirka, M. [1 ]
Dryepondt, S. [1 ]
机构：
[1] Oak Ridge Natl Lab, Mat Sci & Technol Div, Oak Ridge, TN 37831 USA
来源：
CORROSION SCIENCE | 2020年 / 171卷
关键词：
Oxidation; Ni-based alloy; Selective Laser Melting; Electron Beam Melting; LAVES PHASE-FORMATION; MECHANICAL-PROPERTIES; ALLOY; TEXTURE; MICROSTRUCTURE; SCALES; HETEROGENEITY; STRATEGIES; DEPOSITION; RESISTANCE;
D O I：
10.1016/j.corsci.2020.108647
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The microstructure and oxidation behavior of Laser Beam Melted, Electron Beam Melted and wrought Hastelloy X were studied at 950 degrees C in dry air, 50 h cycles, up to 1000 h. The variability of processing parameters and powder compositions strongly impacted the oxidation and spallation behavior. The alloys with high Mn and Si were associated with higher oxidation rates, finer Cr2O3 grain microstructure and increased spallation was observed for the alloys with large elongated grain microstructures (aspect ratio of 10 +/- 3).
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页数：21
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