Effects of Nano-Grains and Deformation Nano-Twins on Electrochemical Corrosion Behavior of DZ125 Nickel-Based Superalloy

被引：6
|
作者：
Tang, Jun [1 ,2 ,3 ,4 ]
Luo, Hongyun [1 ,2 ,3 ,4 ]
Guo, Jingjing [1 ,2 ,3 ,4 ]
Lv, Jinlong [1 ,2 ,3 ,4 ]
Zhang, Zheng [1 ,2 ,3 ,4 ]
Ma, Yue [1 ,2 ,3 ,4 ]
机构：
[1] Beijing Univ Aeronaut & Astronaut, Sch Mat Sci & Engn, Minist Educ, Key Lab Aerosp Mat & Performance, Beijing, Peoples R China
[2] Beijing Univ Aeronaut & Astronaut, Collaborat Innovat Ctr Adv Aeroengine CICAAE, Beijing, Peoples R China
[3] Beijing Univ Aeronaut & Astronaut, Beijing Key Lab Adv Nucl Mat & Phys, Beijing, Peoples R China
[4] Tohoku Univ, Fracture & Reliabil Res Inst, Sch Engn, Sendai, Miyagi, Japan
来源：
ADVANCED ENGINEERING MATERIALS | 2018年 / 20卷 / 12期
基金：
中国国家自然科学基金;
关键词：
electrochemical measurements; nano-twins; Ni-based superalloy; surface nanocrystallization; X-ray photoelectron spectroscopy; COMMERCIALLY PURE TITANIUM; NI-BASED SUPERALLOY; PITTING CORROSION; OXIDATION BEHAVIOR; SURFACE-ROUGHNESS; STAINLESS-STEEL; ALUMINUM-ALLOY; PASSIVE FILM; COATINGS; TEXTURE;
D O I：
10.1002/adem.201800279
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Nano-grains on the surface region of the DZ125 directionally solidified nickel based superalloy is obtained through burnishing processing at both room and low temperature. Compared to the low temperature burnished (LTB) specimen, the {111}/[112] type nano-twins are generated on the room temperature burnished specimen (specimen RTB). The results demonstrate that the nano-grains could improve the corrosion resistance and promote the formation of compact corrosion product films on the burnished DZ125 alloy surface in a 3.5 wt% NaCl solution. The combined effects of local deformation nano-twins and lower percentage of Cr2O3 in corrosion product film lead to the fact that the specimen RTB exhibits a relatively lower corrosion resistance compared to the specimen LTB.
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页数：8
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