Study on Long-Term High Temperature Creep Properties of 12Cr-1.5W-0.6Si Alloy Pipe

He Kun; Pan Qianfu; Li Gang; Liang Bo

doi:10.13832/j.jnpe.2023.S1.0176

Volume 44 Issue S1

Jun. 2023

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He Kun, Pan Qianfu, Li Gang, Liang Bo. Study on Long-Term High Temperature Creep Properties of 12Cr-1.5W-0.6Si Alloy Pipe[J]. Nuclear Power Engineering, 2023, 44(S1): 176-180. doi: 10.13832/j.jnpe.2023.S1.0176

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He Kun, Pan Qianfu, Li Gang, Liang Bo. Study on Long-Term High Temperature Creep Properties of 12Cr-1.5W-0.6Si Alloy Pipe[J]. Nuclear Power Engineering, 2023, 44(S1): 176-180. doi: 10.13832/j.jnpe.2023.S1.0176

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Study on Long-Term High Temperature Creep Properties of 12Cr-1.5W-0.6Si Alloy Pipe

doi: 10.13832/j.jnpe.2023.S1.0176

Science and Technology on Reactor and Materials Laboratory, Nuclear Power Institute of China, Chengdu, 610213, China

Received Date: 2023-02-21
Rev Recd Date: 2023-02-24
Publish Date: 2023-06-15

Abstract

Abstract

To obtain the creep properties of Ferritic/Martensitic alloy, creep tests for 12Cr-1.5W-0.6Si pipes in the air environment at 450°C, 500°C and 550°C were carried out to obtain the creep time-strain curve and steady-state creep rate by using the creeptesting device. The results show that the stress index is relatively high, and the true stress index is obtained by introducing threshold stress. The creep mechanism is dislocation climbing mechanism. After creep tests at 550°C and 160MPa for 3145 h, the precipitated phase is still distributed along the grain boundary, but the lath grain widens and the precipitated phase grain coarsens, and the effect of long-term creep on the microstructure is more significant.
- 12Cr-1.5W-0.6Si alloy,
- High temperature creep,
- Precipitated phase

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References(14)

References

[1]	QIAO Y Q, LI M Y, GUO X P. Development of silicide coatings over Nb-NbCr₂ alloy and their oxidation behavior at 1250℃[J]. Surface and Coatings Technology, 2014, 258: 921-930. doi: 10.1016/j.surfcoat.2014.07.058
[2]	CHENG J C, YI S, PARK J S. Oxidation behavior of Nb-Si-B alloys with the NbSi₂ coating layer formed by a pack cementation technique[J]. International Journal of Refractory Metals and Hard Materials, 2013, 41: 103-109. doi: 10.1016/j.ijrmhm.2013.02.010
[3]	PENG L, TAKIZAWA S, IKEDA K I, et al. Effect of Si on the stability of NbCr₂ laves phase in Cr-Mo-Nb system[J]. Intermetallics, 2019, 110: 106457. doi: 10.1016/j.intermet.2019.03.020
[4]	XUE Y L, LI S M, WU Y T, et al. Strengthening and toughening effects in laves phase Cr₂Ta/Cr in-situ composites by Si additions[J]. Vacuum, 2020, 174: 109202. doi: 10.1016/j.vacuum.2020.109202
[5]	CHEN S H, RONG L J. Effect of silicon on the microstructure and mechanical properties of reduced activation ferritic/martensitic steel[J]. Journal of Nuclear Materials, 2015, 459: 13-19. doi: 10.1016/j.jnucmat.2015.01.004
[6]	PANDEY A B, MISHRA R S, MAHAJAN Y R. Creep behaviour of an aluminium-silicon carbide particulate composite[J]. Scripta Metallurgica et Materialia, 1990, 24(8): 1565-1570. doi: 10.1016/0956-716X(90)90433-H
[7]	LATHA S, NANDAGOPAL M, SELVI S P, et al. Tensile and creep behaviour of modified 9Cr-1Mo steel cladding tube for fast reactor using metallic fuel[J]. Procedia Engineering, 2014, 86: 71-79. doi: 10.1016/j.proeng.2014.11.013
[8]	KIMURA K, KUSHIMA H, SAWADA K. Long-term creep deformation property of modified 9Cr–1Mo steel[J]. Materials Science and Engineering:A, 2009, 510-511: 58-63. doi: 10.1016/j.msea.2008.04.095
[9]	GUGULOTH K, ROY N. Study on the creep deformation behavior and characterization of 9Cr-1Mo-V-Nb steel at elevated temperatures[J]. Materials Characterization, 2018, 146: 279-298. doi: 10.1016/j.matchar.2018.10.011
[10]	LI Y, MOHAMED F A. An investigation of creep behavior in an SiC-2124 Al composite[J]. Acta Materialia, 1997, 45(11): 4775-4785. doi: 10.1016/S1359-6454(97)00130-4
[11]	YANG C, CAO L F, GAO Y H, et al. Nanostructural Sc-based hierarchy to improve the creep resistance of Al–Cu alloys[J]. Materials & Design, 2020, 186: 108309.
[12]	VO N Q, BAYANSAN D, SANATY-ZADEH A, et al. Effect of Yb microadditions on creep resistance of a dilute Al-Er-Sc-Zr alloy[J]. Materialia, 2018, 4: 65-69. doi: 10.1016/j.mtla.2018.08.030
[13]	HU X B, LI L, WU X C, et al. Coarsening behavior of M₂₃C₆ carbides after ageing or thermal fatigue in AISI H13 steel with niobium[J]. International Journal of Fatigue, 2006, 28(3): 175-182. doi: 10.1016/j.ijfatigue.2005.06.042
[14]	DUDOVA N, KAIBYSHEV R. On the precipitation sequence in a 10%Cr steel under tempering[J]. ISIJ International, 2011, 51(5): 826-831. doi: 10.2355/isijinternational.51.826