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
收藏
页数：12
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