The Studies on Multiaxial Creep Behavior of Inconel 718 Notched Bar at 700°C

被引：3
作者：
Bao, Shiyi [1 ,2 ]
Xiao, Zhongyang [1 ]
Li, Xiangyang [1 ]
Zhong, Fengping [3 ,4 ]
Mao, Jianfeng [1 ,2 ]
机构：
[1] Zhejiang Univ Technol, Inst Proc Equipment & Control Engn, Dept Mech Engn, Liuhe Rd 288, Huzhou 310032, Zhejiang, Peoples R China
[2] Minist Educ, Engn Res Ctr Proc Equipment & Its Remfg, Liuhe Rd 288, Huzhou 310032, Zhejiang, Peoples R China
[3] Zhejiang Acad Special Equipment Sci, Gaixuan Rd 211, Hangzhou 310032, Zhejiang, Peoples R China
[4] Key Lab Special Equipment Safety Testing Technol, Gaixuan Rd 211, Hangzhou 310032, Zhejiang, Peoples R China
来源：
JOURNAL OF PRESSURE VESSEL TECHNOLOGY-TRANSACTIONS OF THE ASME | 2021年 / 143卷 / 01期
基金：
中国国家自然科学基金; 国家重点研发计划;
关键词：
Inconel; 718; alloy; notched bar; multiaxial creep behavior; microscopic examination; ALLOY; MICROSTRUCTURE; PRECIPITATION; FATIGUE; PHASE; DELTA; MODEL; STATE; LIFE;
D O I：
10.1115/1.4047715
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
This paper studies the multi-axial creep behavior of Inconel 718 alloy at 700 degrees C. The stress triaxialily was introduced into the sample by adding U-shaped notches of various sizes and shapes. Furthermore, the multi-axial creep test of notched round bar was completed, and the sample slice after the creep test was subjected to scanning electron microscopy (SEM) microscopic examination. The influence of notch radius on its creep behavior and damage evolution was studied through experimental and numerical investigation. The finite element method (FEM) implemented by Gurson-Tvergaard-Needleman (GTN) model is used to simulate the evolution of damage in multi-axial stress state. With the comparison between experimental and numerical data, the multi-axial creep behaviors are clearly revealed in terms of stress triaxiality, creep strain (stress), void volume fraction (WF), and so on. It was found that the great agreement is achieved between FEM and test data, and multi-axial creep behavior is well predicted.
引用
收藏
页数：10
相关论文
共 31 条
[1]   Simulation of creep cavity growth in Inconel 718 alloy [J].
Ankit, Kumar ;
Prasad, Nishtala .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2011, 528 (12) :4209-4216
[2]   Numerical and experimental investigation on limit load of elbow with local thinning area [J].
Bao, Shiyi ;
Liu, Yunkai ;
Mao, Jianfeng ;
Ge, Renyue ;
Li, Xiangyang .
INTERNATIONAL JOURNAL OF PRESSURE VESSELS AND PIPING, 2019, 172 :414-422
[3]   Effect of creep and oxidation on reduced fatigue life of Ni-based alloy 617 at 850 °C [J].
Chen, Xiang ;
Yang, Zhiqing ;
Sokolov, Mikhail A. ;
Erdman, Donald L., III ;
Mo, Kun ;
Stubbins, James F. .
JOURNAL OF NUCLEAR MATERIALS, 2014, 444 (1-3) :393-403
[4]   TEM Study of High-Temperature Precipitation of Delta Phase in Inconel 718 Alloy [J].
Dehmas, Moukrane ;
Lacaze, Jacques ;
Niang, Aliou ;
Viguier, Bernard .
ADVANCES IN MATERIALS SCIENCE AND ENGINEERING, 2011, 2011
[5]   A microstructural based creep model applied to alloy 718 [J].
Drexler, Andreas ;
Fischersworring-Bunk, Andreas ;
Oberwinkler, Bernd ;
Ecker, Werner ;
Gaenser, Hans-Peter .
INTERNATIONAL JOURNAL OF PLASTICITY, 2018, 105 :62-73
[6]   Experimental and numerical investigation of ductile fracture using GTN damage model on in-situ tensile tests [J].
Gholipour, H. ;
Biglari, F. R. ;
Nikbin, K. .
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES, 2019, 164
[7]   Understanding activation energy of dynamic recrystallization in Inconel 718 [J].
Gujrati, Rajat ;
Gupta, Chirag ;
Jha, Jyoti S. ;
Mishra, Sushil ;
Alankar, Alankar .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2019, 744 :638-651
[8]   Effect of high-temperature aging on microstructure and mechanical properties of Ni-Mo-Cr based superalloy subjected to simulated heat-affected zone thermal cycle [J].
He, Y. M. ;
Yang, J. G. ;
Chen, S. J. ;
Li, Z. ;
Gao, Z. L. .
JOURNAL OF ALLOYS AND COMPOUNDS, 2016, 660 :266-275
[9]   A review of mechanical properties of additively manufactured Inconel 718 [J].
Hosseini, E. ;
Popovich, V. A. .
ADDITIVE MANUFACTURING, 2019, 30
[10]   Coupling multi-scale mechanical testing techniques reveals the existence of a trans-granular channel fracture deformation mechanism in high dose Inconel X-750 [J].
Howard, C. ;
Bhakhri, V. ;
Dixon, C. ;
Rajakumar, H. ;
Mayhew, C. ;
Judge, C. D. .
JOURNAL OF NUCLEAR MATERIALS, 2019, 517 :17-34
1234