High-temperature oxidation performance of Ni-based GH3536 superalloy fabricated by laser powder bed fusion

被引：7

作者：

Min, Shiling ^{[1
]}

Liu, Hui ^{[1
]}

Yang, Mengmeng ^{[1
]}

Zhang, Huawei ^{[1
]}

Hou, Juan ^{[1
]}

Zhang, Kai ^{[1
,2
]}

Liang, Jingjing ^{[3
]}

Li, Jinguo ^{[3
]}

Wang, Hao ^{[1
]}

Wang, Jianqiu ^{[3
]}

Huang, Aijun ^{[2
]}

机构：

[1] Univ Shanghai Sci & Technol, Sch Mat Sci & Chem, Shanghai 200093, Peoples R China

[2] Monash Univ, Monash Ctr Addit Mfg MCAM, Notting Hill, Vic 3168, Australia

[3] Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China

来源：

NPJ MATERIALS DEGRADATION | 2022年 / 6卷 / 01期

基金：

中国国家自然科学基金;

关键词：

MECHANICAL-PROPERTIES; PROCESS PARAMETERS; HEAT-TREATMENT; MICROSTRUCTURE; ALLOY; RESISTANCE; CORROSION; TRANSFORMATION;

D O I：

10.1038/s41529-022-00276-8

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This study investigates the effect of microstructure on short-term and long-term oxidation behaviours of GH3536 superalloy fabricated by laser powder bed fusion (LPBF), in which the superalloy is isothermally oxidised at 950 degrees C for 6 h and 500 h in air. The LPBF sample exhibits improved oxidation resistance compared with a wrought counterpart after long-term exposure. The effect of microstructure diversity between LPBF and wrought samples on oxidation behaviour is discussed. The cellular structure produced during the LPBF process acts as a rapid diffusion path to accelerate the formation of a protective film in the initial stage, leading to an enhancement in oxidation resistance for extended exposure.

引用

页数：12

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