Investigating creep behavior of Ni–Cr–W alloy pressurized tube at 950 °C by using in-situ creep testing system
The creep behavior of Ni–Cr–W alloy at 950 °C has been investigated by a novel creep testing system which is capable of in-situ measurement of strain. Tubular specimens were pressurized with argon gas for effective stresses up to 32 MPa. Experimental results show that the thermal fatigue reduces the...
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2020-07-01
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| Series: | Nuclear Engineering and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S1738573319309027 |
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doaj-e7138ed3b5fd416cb6ecc371380e278e2020-11-25T03:45:15ZengElsevierNuclear Engineering and Technology1738-57332020-07-0152714811485Investigating creep behavior of Ni–Cr–W alloy pressurized tube at 950 °C by using in-situ creep testing systemYang Zhong0Kuan-Che Lan1Hoon Lee2Bomou Zhou3Yong Wang4D.K.L. Tsang5James F. Stubbins6Department of Radiation Oncology, Fudan University Shanghai Cancer Center, Shanghai, China; Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, ChinaInstitute of Nuclear Engineering and Science, National Tsing Hua University, Hsinchu, 30013, TaiwanDepartment of Nuclear, Plasma, and Radiological Engineering, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USAShanghai Institute of Applied Physics, Chinese Academy of Sciences (CAS), Shanghai, 201800, ChinaShanghai Institute of Applied Physics, Chinese Academy of Sciences (CAS), Shanghai, 201800, ChinaShanghai Institute of Applied Physics, Chinese Academy of Sciences (CAS), Shanghai, 201800, China; Corresponding author.Department of Nuclear, Plasma, and Radiological Engineering, University of Illinois at Urbana-Champaign, Urbana, IL, 61801, USA; Corresponding author.The creep behavior of Ni–Cr–W alloy at 950 °C has been investigated by a novel creep testing system which is capable of in-situ measurement of strain. Tubular specimens were pressurized with argon gas for effective stresses up to 32 MPa. Experimental results show that the thermal fatigue reduces the creep life of the tubular specimens and with the introduction of thermal cycling fatigue the primary stage disappears and the creep rate higher than the pure thermal creep (without thermal fatigue). Also the creep behavior of Ni–Cr–W alloy doesn't consist in the secondary stage. A new creep equation has been derived and implemented into finite element method. The results from the finite element analyses are in good agreement with the creep experiment.http://www.sciencedirect.com/science/article/pii/S1738573319309027Ni-Cr-W alloyThermal creepFinite element analysis |
| collection |
DOAJ |
| language |
English |
| format |
Article |
| sources |
DOAJ |
| author |
Yang Zhong Kuan-Che Lan Hoon Lee Bomou Zhou Yong Wang D.K.L. Tsang James F. Stubbins |
| spellingShingle |
Yang Zhong Kuan-Che Lan Hoon Lee Bomou Zhou Yong Wang D.K.L. Tsang James F. Stubbins Investigating creep behavior of Ni–Cr–W alloy pressurized tube at 950 °C by using in-situ creep testing system Nuclear Engineering and Technology Ni-Cr-W alloy Thermal creep Finite element analysis |
| author_facet |
Yang Zhong Kuan-Che Lan Hoon Lee Bomou Zhou Yong Wang D.K.L. Tsang James F. Stubbins |
| author_sort |
Yang Zhong |
| title |
Investigating creep behavior of Ni–Cr–W alloy pressurized tube at 950 °C by using in-situ creep testing system |
| title_short |
Investigating creep behavior of Ni–Cr–W alloy pressurized tube at 950 °C by using in-situ creep testing system |
| title_full |
Investigating creep behavior of Ni–Cr–W alloy pressurized tube at 950 °C by using in-situ creep testing system |
| title_fullStr |
Investigating creep behavior of Ni–Cr–W alloy pressurized tube at 950 °C by using in-situ creep testing system |
| title_full_unstemmed |
Investigating creep behavior of Ni–Cr–W alloy pressurized tube at 950 °C by using in-situ creep testing system |
| title_sort |
investigating creep behavior of ni–cr–w alloy pressurized tube at 950 °c by using in-situ creep testing system |
| publisher |
Elsevier |
| series |
Nuclear Engineering and Technology |
| issn |
1738-5733 |
| publishDate |
2020-07-01 |
| description |
The creep behavior of Ni–Cr–W alloy at 950 °C has been investigated by a novel creep testing system which is capable of in-situ measurement of strain. Tubular specimens were pressurized with argon gas for effective stresses up to 32 MPa. Experimental results show that the thermal fatigue reduces the creep life of the tubular specimens and with the introduction of thermal cycling fatigue the primary stage disappears and the creep rate higher than the pure thermal creep (without thermal fatigue). Also the creep behavior of Ni–Cr–W alloy doesn't consist in the secondary stage. A new creep equation has been derived and implemented into finite element method. The results from the finite element analyses are in good agreement with the creep experiment. |
| topic |
Ni-Cr-W alloy Thermal creep Finite element analysis |
| url |
http://www.sciencedirect.com/science/article/pii/S1738573319309027 |
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