A brittle fracture mechanism in thermally aged duplex stainless steels revealed by in situ high-energy X-ray diffraction
作者： Shilei Li , Tiancheng Wang , Qing Tan , Runguang Li , Yanli Wang
DOI: 10.1016/J.MSEA.2018.10.025
关键词:
摘要: Abstract A direct relationship between the microstructural evolution and macroscopic fracture behaviors of a thermally aged (at 475 °C for 400 h) duplex stainless steel (DSS) has been established with experimental results from atom probe tomography (APT), nanoindentation in situ synchrotron-based high-energy X-ray diffraction (HE-XRD). The APT experiments demonstrate that ferrite DSS spinodally decomposes into Cr-enriched Cr-depleted domains during thermal aging, which leads to severe hardening effect ferrite. lattice strain development deformation acquired HE-XRD measurements confirms cleavage α{110} α{200} grains aligned perpendicular loading direction. can be readily fractured by connecting cracks spinodal-decomposition-induced premature failure control final brittle DSS.
sci-hub.se 参考文章(23)
C. Pareige, J. Emo, S. Saillet, C. Domain, P. Pareige, Kinetics of G-phase precipitation and spinodal decomposition in very long aged ferrite of a Mo-free duplex stainless steel Journal of Nuclear Materials. ,vol. 465, pp. 383- 389 ,(2015) , 10.1016/J.JNUCMAT.2015.06.017
Weifeng Chen, Fei Xue, Yang tian, Dunji Yu, Weiwei Yu, Xu Chen, Effect of thermal aging on the low cycle fatigue behavior of Z3CN20.09M cast duplex stainless steel Materials Science and Engineering A-structural Materials Properties Microstructure and Processing. ,vol. 646, pp. 263- 271 ,(2015) , 10.1016/J.MSEA.2015.08.070
L M'Cirdi, Experimental approach of a crystallographic cleavage criterion in a cast aged duplex stainless steel Acta Materialia. ,vol. 49, pp. 3879- 3887 ,(2001) , 10.1016/S1359-6454(01)00249-X
SL Li, HL Zhang, YL Wang, SX Li, K Zheng, FWXT Xue, XT Wang, None, Annealing induced recovery of long-term thermal aging embrittlement in a duplex stainless steel Materials Science and Engineering A-structural Materials Properties Microstructure and Processing. ,vol. 564, pp. 85- 91 ,(2013) , 10.1016/J.MSEA.2012.11.046
F Danoix, P Auger, Atom Probe Studies of the Fe–Cr System and Stainless Steels Aged at Intermediate Temperature: A Review Materials Characterization. ,vol. 44, pp. 177- 201 ,(2000) , 10.1016/S1044-5803(99)00048-0
SL Li, YL Wang, HL Zhang, SX Li, K Zheng, F Xue, XT Wang, None, Microstructure evolution and impact fracture behaviors of Z3CN20-09M stainless steels after long-term thermal aging Journal of Nuclear Materials. ,vol. 433, pp. 41- 49 ,(2013) , 10.1016/J.JNUCMAT.2012.09.004
J.D. Tucker, M.K. Miller, G.A. Young, Assessment of thermal embrittlement in duplex stainless steels 2003 and 2205 for nuclear power applications Acta Materialia. ,vol. 87, pp. 15- 24 ,(2015) , 10.1016/J.ACTAMAT.2014.12.012
C. Pareige, S. Novy, S. Saillet, P. Pareige, Study of phase transformation and mechanical properties evolution of duplex stainless steels after long term thermal ageing (>20 years) Journal of Nuclear Materials. ,vol. 411, pp. 90- 96 ,(2011) , 10.1016/J.JNUCMAT.2011.01.036
N. Jia, Z.H. Cong, X. Sun, S. Cheng, Z.H. Nie, Y. Ren, P.K. Liaw, Y.D. Wang, An in situ high-energy X-ray diffraction study of micromechanical behavior of multiple phases in advanced high-strength steels Acta Materialia. ,vol. 57, pp. 3965- 3977 ,(2009) , 10.1016/J.ACTAMAT.2009.05.002
Hisashi Kuwano, Takuyo Yamada, Satoshi Okano, Mechanical property and microstructural change by thermal aging of SCS14A cast duplex stainless steel Journal of Nuclear Materials. ,vol. 350, pp. 47- 55 ,(2006) , 10.1016/J.JNUCMAT.2005.11.008