TY - JOUR
T1 - Creep strengthening by lath boundaries in 9Cr ferritic heat-resistant steel
AU - Mitsuhara, Masatoshi
AU - Yamasaki, Shigeto
AU - Miake, Masaki
AU - Nakashima, Hideharu
AU - Nishida, Minoru
AU - Kusumoto, Junichi
AU - Kanaya, Akihiro
N1 - Funding Information:
This work was partly supported by the Grant-in-Aid for Young Scientists (B), [grant number 26820317], through the Japan Society for the Promotion of Science (JSPS).
Publisher Copyright:
© 2016 Taylor and Francis.
Copyright:
Copyright 2016 Elsevier B.V., All rights reserved.
PY - 2016/2/1
Y1 - 2016/2/1
N2 - The interactions between dislocations and lath boundaries in Grade 91 steel were observed by an in situ transmission electron microscopy tensile test at 973 K. Dislocations glided slowly and bowed out in a martensite lath interior. The ends of the dislocation were connected to the lath boundaries. In a tempered specimen, the pinning stress caused by the lath boundary was estimated to be >70 MPa with a lath width of 0.4 m. In crept specimens, lath coarsening reduced the pinning effect.
AB - The interactions between dislocations and lath boundaries in Grade 91 steel were observed by an in situ transmission electron microscopy tensile test at 973 K. Dislocations glided slowly and bowed out in a martensite lath interior. The ends of the dislocation were connected to the lath boundaries. In a tempered specimen, the pinning stress caused by the lath boundary was estimated to be >70 MPa with a lath width of 0.4 m. In crept specimens, lath coarsening reduced the pinning effect.
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U2 - 10.1080/09500839.2016.1154200
DO - 10.1080/09500839.2016.1154200
M3 - Article
AN - SCOPUS:84964068503
VL - 96
SP - 76
EP - 83
JO - Philosophical Magazine Letters
JF - Philosophical Magazine Letters
SN - 0950-0839
IS - 2
ER -