On the microstructural origin of premature failure of creep strength enhanced martensitic steels
On the microstructural origin of premature failure of creep strength enhanced martensitic steels
复制标题
蠕变强度强化马氏体钢过早失效的微观组织根源
DOI:
10.1016/j.jmst.2021.03.001
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发表时间:
2021-03
影响因子:
10.9
通讯作者:
G. Chen
中科院分区:
文献类型:
--
作者:
J. Li;C. Xu;G. Zheng;W.J. Dai;C.C. Bu;G. Chen
The creep strength enhanced martensitic steels are key material for the main power generating units in ultra-supercritical plants. Studies on the evaluation of their creep rupture life show there is an overestimation of rupture life after long-term creep, which is known as premature failure. However, the microstructural origin of the premature failure remains unclear. Here in this study, we have carefully investigated the microstructural transformations and their influences on creep rupture behavior, showing that the evolution of martensite and M23C6carbides as well as Laves phase are responsible for the premature failure. By using multi-step TTP-LMP method, we confirmed a three-stage creep rupture behavior under different stress regions. Further quantitative analysis showed that the coarsening of M23C6carbides and recovery of martensite exert equal and dominant effects on the premature failure in the medium stress region, while precipitation and coarsening of Laves phase are responsible for the premature failure in the low stress region.
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影响因子:
0.7
作者:
V. Krivenyuk
通讯作者:
V. Krivenyuk
影响因子:
9.4
作者:
Q. Liu;D. Jensen;N. Hansen
通讯作者:
Q. Liu;D. Jensen;N. Hansen
影响因子:
9.4
作者:
Fuller, CB;Seidman, DN;Dunand, DC
通讯作者:
Dunand, DC
DOI:
10.1016/j.msea.2010.01.033
发表时间:
2010-04-25
影响因子:
6.4
作者:
Dini, G.;Ueji, R.;Monir-Vaghefi, S. M.
通讯作者:
Monir-Vaghefi, S. M.
影响因子:
9.4
作者:
Agamennone, R.;Blum, W.;Chakravartty, J. K.
通讯作者:
Chakravartty, J. K.