Internal nitridation during creep of IN617 superalloy

被引：9

作者：

Wang, Yue ^{[1
]}

Liu, Qu ^{[2
,3
]}

Li, Kejian ^{[2
,3
]}

Cai, Zhipeng ^{[2
,3
,4
,5
]}

Shi, Li ^{[1
]}

Wang, Haitao ^{[1
]}

机构：

[1] Tsinghua Univ, Inst Nucl & New Energy Technol, Beijing 100084, Peoples R China

[2] Tsinghua Univ, Dept Mech Engn, Beijing 100084, Peoples R China

[3] Minist Educ, Key Lab Adv Mat Proc Technol, Beijing 100084, Peoples R China

[4] Tsinghua Univ, State Key Lab Tribol Adv Equipment, Beijing 100084, Peoples R China

[5] Tsinghua Univ, Collaborat Innovat Ctr Adv Nucl Energy Technol, Beijing 100084, Peoples R China

来源：

CORROSION SCIENCE | 2022年 / 209卷

基金：

国家重点研发计划;

关键词：

Internal nitridation; Oxidation; Creep; High temperature; Superalloy; IN617; NICKEL-BASE ALLOYS; LONG-TERM CREEP; HIGH-TEMPERATURE; OXIDATION BEHAVIOR; RUPTURE PROPERTIES; INCONEL; 617; HELIUM; AIR; MICROSTRUCTURE; ENVIRONMENTS;

D O I：

10.1016/j.corsci.2022.110763

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Internal nitridation of IN617 was investigated during creep rupture at 1000 degrees C. The results indicated that internal nitridation seriously deteriorated creep properties. Various nitrides including pi phase, AlN, Cr2N and TiN were found. Stable AlN and TiN precipitated inside grains and distributed widely. Less stable pi phase and Cr2N only precipitated at the high-energy boundaries with sufficient N and Cr concentrations. Nitridation occurred all over the cross-section (8.9 mm thick) near the fracture surface of the creep specimen ruptured under 16 MPa. It suggested that creep aggravated internal nitridation because of providing continuous crack paths for nitrogen penetration.

引用

页数：15

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