Characterization and oxidation resistance of additive manufactured and forged IN718 Ni-based superalloys

被引：85
|
作者：
Juillet, C. [1 ]
Oudriss, A. [1 ]
Balmain, J. [1 ]
Feaugas, X. [1 ]
Pedraza, F. [1 ]
机构：
[1] Univ La Rochelle, CNRS, UMR 7356, Lab Sci Ingn Environm,LaSIE, Ave Michel Crepeau, F-17042 La Rochelle 1, France
来源：
CORROSION SCIENCE | 2018年 / 142卷
关键词：
Oxidation; High temperature; IN-718; superalloy; Oxide scales; Hydrogen charging; INCONEL; 718; SUPERALLOY; HIGH-TEMPERATURES; HEAT-TREATMENT; PART I; KINETICS; MICROSTRUCTURE; ALLOYS; GROWTH; MECHANISMS; DIFFUSION;
D O I：
10.1016/j.corsci.2018.07.032
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The effect of the manufacturing process (additive manufacturing and forging) of IN-718 Ni-based superalloys was studied isothermally at 600, 700 and 800 degrees C for 48 h in Ar and in air. The microstructure of the Cr2O3 scale depended on the manufacturing process. Oxygen was soaked in the bulk of the additive manufactured IN-718 and outward cation diffusion was blocked. Diffusion of oxygen occurred through the grain boundaries of the forged material but cation outward diffusion was not arrested. The oxide scales grown in the forged IN-718 appeared less compact than those grown on the additive manufactured as shown by hydrogen charging experiments.
引用
收藏
页码：266 / 276
页数：11
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