TY - JOUR
T1 - Effects of alloying additions and material microstructure on the accuracy of the predictive law of creep crack growth for W-strengthened 9-12% Cr ferritic heat-resistant steel
AU - Sugiura, Ryuji
AU - Yokobori, A. Toshimitsu
AU - Takamori, Shinjyu
AU - Tabuchi, Masaaki
AU - Fuji, Akio
AU - Yoda, Mitsuo
AU - Kobayashi, Kenichi
AU - Yokobori, Takeo
N1 - Copyright:
Copyright 2008 Elsevier B.V., All rights reserved.
PY - 2007/11
Y1 - 2007/11
N2 - The life of creep crack growth for W-strengthened 9-12%Cr steel is sensitive to the alloying additions and to differences in material microstructure, such as lath martensitic structure and grain size caused by differences in cooling rates in the steel ingots during the manufacturing process, which results in the large scatter of experimental data from the law of creep crack growth life. In the present study, creep crack growth tests were conducted using W-strengthened 9-12%Cr steels with various contents of alloying additions and the dimensions of micro-nano structures, The effects of the composition of alloying additions and material microstructures on the life of creep crack growth for W-strengthened 9-12%Cr steel were clarified.
AB - The life of creep crack growth for W-strengthened 9-12%Cr steel is sensitive to the alloying additions and to differences in material microstructure, such as lath martensitic structure and grain size caused by differences in cooling rates in the steel ingots during the manufacturing process, which results in the large scatter of experimental data from the law of creep crack growth life. In the present study, creep crack growth tests were conducted using W-strengthened 9-12%Cr steels with various contents of alloying additions and the dimensions of micro-nano structures, The effects of the composition of alloying additions and material microstructures on the life of creep crack growth for W-strengthened 9-12%Cr steel were clarified.
KW - Crack growth
KW - Creep
KW - Grain size
KW - Lath martensitic structure
KW - Molybdenum equivalence (molybdenum% + 1/2tungsten%)
KW - Tungsten strengthened 9-12%chromium ferritic heat-resistant steel
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U2 - 10.2320/matertrans.MRA2007112
DO - 10.2320/matertrans.MRA2007112
M3 - Article
AN - SCOPUS:37749038034
VL - 48
SP - 2928
EP - 2936
JO - Materials Transactions
JF - Materials Transactions
SN - 1345-9678
IS - 11
ER -