Oxidation Behavior of Pre-Strained Polycrystalline Ni3Al-Based Superalloy

被引：0

作者：

Guo, Rui ^{[1
]}

Ding, Jian ^{[1
]}

Wang, Yujiang ^{[2
]}

Feng, Haomin ^{[1
]}

Chen, Linjun ^{[3
]}

Yang, Jie ^{[1
]}

Xia, Xingchuan ^{[1
]}

Zhao, Yingli ^{[4
]}

Li, Jun ^{[3
]}

Ji, Shuang ^{[4
]}

Luo, Junyi ^{[3
]}

机构：

[1] Hebei Univ Technol, Sch Mat Sci & Engn, Tianjin 300130, Peoples R China

[2] Army Acad Armored Forces, Natl Key Lab Remfg, Beijing 100072, Peoples R China

[3] Adv Technol & Mat Co Ltd, Beijing 101318, Peoples R China

[4] HBIS Grp Co Ltd, Shijiazhuang 050023, Peoples R China

来源：

MATERIALS | 2024年 / 17卷 / 07期

关键词：

Ni3Al-based superalloys; pre-strain; microstructure; dislocation; antioxidant properties; CREEP-BEHAVIOR; TEMPERATURE; NICKEL; ALLOY; DEFORMATION; NI3AL; MICROSTRUCTURE; DEPENDENCE; RESISTANCE; SURFACE;

D O I：

10.3390/ma17071561

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The harsh service environment of aeroengine hot-end components requires superalloys possessing excellent antioxidant properties. This study investigated the effect of pre-strain on the oxidation behavior of polycrystalline Ni3Al-based superalloys. The growth behaviors of oxidation products were analyzed by scanning electron microscope, transmission electron microscope, X-ray Photoelectron Spectroscopy and Raman spectroscopy. The results indicated that the 5% pre-strained alloys exhibited lower mass gain, shallower oxidation depth and more compact oxide film structures compared to the original alloy. This is mainly attributed to the formation of rapid diffusion paths for Al atoms diffusing to the surface under 5% pre-strain, which promotes the faster formation of protective Al2O3 film while continuing to increase the pre-strain to 25% results in less protective transient oxidation behavior being aggravated due to the increase in dislocation density within the alloy, which prevents the timely formation of the protective Al2O3 film, resulting in uneven oxidation behavior on the alloy.

引用

页数：18

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