Effect of Si addition on the creep performance of a Ni-based superalloy

被引：6

作者：

Xiong, Wei ^{[1
,2
]}

Zhou, Shengming ^{[1
]}

Zhang, Dong ^{[1
]}

Huang, Zaiwang ^{[2
]}

Wang, Zi ^{[2
]}

Wu, Hongyu ^{[2
]}

Jiang, Liang ^{[3
]}

机构：

[1] Jinchuan Grp Co Ltd, State Key Lab Nickel & Cobalt Resources Comprehen, Jinchang, Peoples R China

[2] Cent South Univ, State Key Lab Powder Met, Changsha 410083, Hunan, Peoples R China

[3] Yantai Univ, Inst Adv Studies Precis Mat, Yantai, Peoples R China

来源：

MATERIALS SCIENCE AND TECHNOLOGY | 2021年 / 37卷 / 03期

关键词：

Ni-based superalloy; Si content; Laves phase; eutectic; stress rupture; CYCLIC OXIDATION; STRESS RUPTURE; MU-PHASE; CARBIDES; MICROSTRUCTURES; PRECIPITATION; BEHAVIOR; SILICON; 3RD-GENERATION;

D O I：

10.1080/02670836.2021.1885581

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this research, the effect of two different per centages of silicon, i.e. 0.08 and 0.3 wt-%, on microstructure and stress rupture life of a Ni-based superalloy was investigated. The results showed that the fraction of eutectic increased from 1.86 to 3.55% with increasing Si content and a higher fraction of eutectic was found on grain boundaries in high Si-bearing alloy. Upon stress rupture at 975 degrees C/225 MPa, cracking initiates and propagates along Laves phases in 0.3 wt-% Si alloy, causing shorter lifetime comparing to that of 0.08 wt-% Si. The microscopic examination uncovered that Si prefers to segregate towards liquid and gamma phase, which can explain different rupture lifetimes of two groups of Si-bearing alloys.

引用

页码：292 / 300

页数：9

共 41 条

[1] The mechanical and microstructural characteristics of laser-deposited IN718 [J].

Blackwell, PL .

JOURNAL OF MATERIALS PROCESSING TECHNOLOGY, 2005, 170 (1-2) :240-246

[2] MC carbide formation in directionally solidified MAR-M247 LC superalloy [J].

Chen, J ;

Lee, JH ;

Jo, CY ;

Choe, SJ ;

Lee, YT .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 1998, 247 (1-2) :113-125

[3] The grain boundary microstructures of the base and modified RR 2072 bicrystal superalloys and their effects on the creep properties [J].

Chen, QZ ;

Jones, CN ;

Knowles, DM .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2004, 385 (1-2) :402-418

[4] The microstructures of base/modified RR2072 SX superalloys and their effects on creep properties at elevated temperatures [J].

Chen, QZ ;

Jones, N ;

Knowles, DM .

ACTA MATERIALIA, 2002, 50 (05) :1095-1112

[5] Precipitation behavior of μ phase and creep rupture in single crystal superalloy CMSX-4 [J].

Cheng, KuiYu ;

Jo, ChangYong ;

Jin, Tao ;

Hu, ZhuangQi .

JOURNAL OF ALLOYS AND COMPOUNDS, 2011, 509 (25) :7078-7086

[6]

DOI M, 1984, MATER SCI ENG, V67, P247, DOI 10.1016/0025-5416(84)90056-9

[7] EFFECT OF SOLIDIFICATION PARAMETERS ON GROWTH GEOMETRY OF MC CARBIDE IN IN-100 DENDRITIC MONO-CRYSTALS [J].

FERNANDEZ, R ;

LECOMTE, JC ;

KATTAMIS, TZ .

METALLURGICAL TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 1978, 9 (10) :1381-1386

[8] Improvement of creep strength of a third generation, single-crystal Ni-base superalloy by solution heat treatment [J].

Fuchs G.E. .

Journal of Materials Engineering and Performance, 2002, 11 (01) :19-25

[9] Solution heat treatment response of a third generation single crystal Ni-base superalloy [J].

Fuchs, GE .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2001, 300 (1-2) :52-60

[10] EFFECTS OF GRAIN-BOUNDARY CARBIDES ON THE CREEP AND BACK STRESS OF A NICKEL-BASE SUPER-ALLOY [J].

FURILLO, FT ;

DAVIDSON, JM ;

TIEN, JK ;

JACKMAN, LA .

MATERIALS SCIENCE AND ENGINEERING, 1979, 39 (02) :267-273

← 1 2 3 4 5 →