Mechanical Properties Evolution of γ′/γ" Nickel-Base Superalloys During Long-Term Thermal Over-Aging

被引：19

作者：

Agnoli, A. ^{[1
]}

Le Gall, C. ^{[1
]}

Thebault, J. ^{[1
,2
]}

Marin, E. ^{[1
]}

Cormier, J. ^{[3
]}

机构：

[1] Safran Aircraft Engines, 171 Blvd Valmy,BP 31, F-92702 Colombes, France

[2] Precis Casparts Corps, 20 Ave Pau, F-64680 Ogeu Les Bains, France

[3] Univ Poitiers, CNRS, Dept Phys & Mech Mat, Inst Pprime,ENSMA,UPR 3346, Teleport 2,1 Ave Clement Ader,BP 40109, F-86961 Futuroscope, France

来源：

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE | 2018年 / 49A卷 / 09期

关键词：

CYCLE FATIGUE PROPERTIES; CRACK-GROWTH-BEHAVIOR; INCONEL; 718; ALLOY; MICROSTRUCTURE; PRECIPITATION; TEMPERATURE; CREEP; DEFORMATION; MORPHOLOGY; STRESS;

D O I：

10.1007/s11661-018-4778-x

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The long-term stability of Inconel 718 and Waspaloy forgings in the 600 degrees C to 850 degrees C temperature range and up to 10,000 hours was studied by means of mechanical tests and microstructural analyses. Hardness and tensile properties were found to decrease with increasing over-aging time and temperature. The comparative analysis of tensile results of both alloys indicates that they exhibit an equivalent stability over time if the over-aging temperature of Waspaloy is increased by 50 degrees C to 100 degrees C compared to Inconel 718. No detrimental intermetallic precipitation at grain boundaries has been detected in both alloys. Microstructure characterizations performed by scanning electron microscopy indicate that the higher stability of Waspaloy can be attributed to the slower kinetics of coarsening and dissolution of gamma' precipitates with respect to gamma('') precipitates that account for the majority of hardening particles in Inconel 718. Additionally, fatigue results indicate that in both alloys over-aging promotes surface crack initiation, thus leading to shorter fatigue life.

引用

页码：4290 / 4300

页数：11

共 50 条

[11] Influence of microstructure on macroscopic elastic properties and thermal expansion of nickel-base superalloys ERBO/1 and LEK94 [J].

Demtroeder, K. ;

Eggeler, G. ;

Schreuer, J. .

MATERIALWISSENSCHAFT UND WERKSTOFFTECHNIK, 2015, 46 (06) :563-576

[12] DEFORMATION MECHANISMS AND MICROSTRUCTURAL EVOLUTION OF γ plus γ′ DUPLEX AGGREGATES GENERATED DURING THERMOMECHANICAL PROCESSING OF NICKEL-BASE SUPERALLOYS [J].

Zhang, Beijiang ;

Zhao, Guangpu ;

Zhang, Wenyun ;

Xu, Guohua ;

Qin, Heyong .

PROCEEDINGS OF THE 13TH INTENATIONAL SYMPOSIUM OF SUPERALLOYS (SUPERALLOYS 2016), 2016, :487-496

[13] Microstructure and Texture Evolution During Hot-Pack Rolling of Nickel-Base Superalloys to Thin Sheet and Foil [J].

Pilchak, A. L. ;

Ballard, D. L. ;

Weaver, D. S. ;

Semiatin, S. L. .

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 2011, 42A (04) :1089-1102

[14] Prediction of microstructure evolution during multi-stand shape rolling of nickel-base superalloys [J].

Subramanian K. ;

Cherukuri H.P. .

Integrating Materials and Manufacturing Innovation, 2014, 3 (01) :385-408

[15] Effects of aging in high temperature helium environments on room temperature tensile properties of nickel-base superalloys [J].

Kim, Daejong ;

Sah, Injin ;

Jang, Changheui .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2011, 528 (03) :1713-1720

[16] Microstructural evolution and mechanical properties of solution annealed cast IN617B alloy during long-term thermal exposure [J].

Gao, Shuang ;

Hou, Jieshan ;

Guo, Yongan ;

Zhou, Lanzhang .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2017, 704 :302-310

[17] Effects of long-term thermal aging on mechanical properties and microstructural evolution of 17-4 PH stainless steel in simulated thermal conditions for nuclear applications [J].

Lee, Junho ;

Park, Gitae ;

Oh, Chang Young ;

Son, Youngho ;

Kim, Seunghyun ;

Bahn, Chi Bum .

JOURNAL OF NUCLEAR MATERIALS, 2025, 606

[18] Microstructural Evolution and Mechanical Properties of Nickel-Base Superalloy Brazed Joints Using a MPCA Filler [J].

Gao, Minrui ;

Schneiderman, Benjamin ;

Gilbert, Sarah M. ;

Yu, Zhenzhen .

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 2019, 50A (11) :5117-5127

[19] Precipitate coarsening and mechanical properties in 6082 aluminium alloy during long-term thermal exposure [J].

Li, Qiaoli ;

Qin, Jin ;

Jiang, Daiping ;

Yi, Danqing ;

Wang, Bin .

JOURNAL OF ALLOYS AND COMPOUNDS, 2022, 909

[20] The Effect of Fe and Cr on the Microstructure Evolution and Mechanical Properties of GH2107 Superalloy during Long-Term Aging [J].

Jiang, Yifu ;

Gao, Shuang ;

Yin, Xiaowei ;

Liu, Jintao ;

Qin, Xuezhi ;

Zhou, Lanzhang ;

Wang, Lin ;

Zhao, Qun ;

Liu, Jun .

JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE, 2024, 33 (03) :1314-1325

← 1 2 3 4 5 →