High-temperature oxidation behavior of additively manufactured IN625: Effect of microstructure and grain size

被引：29
作者：
Chyrkin, Anton [1 ]
Gunduz, Kerem O. [1 ,2 ]
Fedorova, Irina [3 ]
Sattari, Mohammad [3 ]
Visibile, Alberto [1 ]
Halvarsson, Mats [3 ]
Froitzheim, Jan [1 ]
Stiller, Krystyna [3 ]
机构：
[1] Chalmers Univ Technol, Dept Chem & Chem Engn, Kemivagen 10, SE-41296 Gothenburg, Sweden
[2] Gebze Tech Univ, Dept Mat Sci & Engn, TR-41400 Gebze, Kocaeli, Turkey
[3] Chalmers Univ Technol, Dept Phys, Kemigarden 1, SE-41296 Gothenburg, Sweden
来源：
CORROSION SCIENCE | 2022年 / 205卷
关键词：
High-temperature oxidation; Ni-base alloys; IN625; Additive manufacturing; SLM; Intergranular corrosion; VOID FORMATION; WATER-VAPOR; ALLOY; EVAPORATION; CHROMIUM; KINETICS; NICKEL; SCALES; GROWTH; PHASE;
D O I：
10.1016/j.corsci.2022.110382
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
High-temperature oxidation of additively manufactured (AM) Ni-base alloy IN625 has been studied in air and Ar-5%H-2-3%H2O at 900-1000 degrees C. AM material is found to oxidize faster than the conventionally manufactured (CM) IN625 due to severe intergranular oxidation observed in the former. The AM IN625 was heat treated at 1100-1250 degrees C and hot rolled at 980 degrees C in order to modify the AM microstructure, primarily grain size, and analyze its role in alloy oxidation behavior. Grain size is shown to affect overall oxidation kinetics but not the intergranular oxidation morphology.
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页数：16
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