Evolution of boron segregation during tempering in B doped 9%Cr ferritic steel

被引：17

作者：

Osanai, Takumi ^{[1
]}

Sekido, Nobuaki ^{[1
]}

Yonemura, Mitsuharu ^{[2
]}

Maruyama, Kouichi ^{[1
]}

Takeuchi, Miyuki ^{[3
]}

Yoshimi, Kyosuke ^{[1
]}

机构：

[1] Tohoku Univ, Grad Sch Engn, Aoba Ku, 6-6-02 Aramaki Aza Aoba, Sendai, Miyagi 9808579, Japan

[2] Nippon Steel Corp Ltd, Adv Technol Res Labs, 1-8 Fuso Cho, Amagasaki, Hyogo 6600891, Japan

[3] Univ Tokyo, Grad Sch Engn, Bunkyo Ku, 2-11-16 Yayoi, Tokyo 1138656, Japan

来源：

MATERIALS CHARACTERIZATION | 2021年 / 177卷

关键词：

Boron; Grain boundary segregation; Ferritic steel; Tempering; Nano-SIMS; GRAIN-BOUNDARY SEGREGATION; AUSTENITIC STAINLESS-STEEL; NONEQUILIBRIUM SEGREGATION; ATOMIC-SCALE; P-B; PHOSPHORUS; CHROMIUM; STRENGTH; BEHAVIOR; CARBON;

D O I：

10.1016/j.matchar.2021.111192

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Boron segregation behavior during tempering at 600 and 790 degrees C was examined in a boron-doped 9Cr-steel by using high-resolution SIMS imaging (nano-SIMS). Boron segregation that developed at prior austenite grain boundaries (PAGBs) during austenitizing was found to decrease reduced during tempering because the equilibrium concentration of B segregation for austenite is larger than that for ferrite so that the segregated boron atoms diffused into block and packet boundaries. The size and the volume fraction of the carbide precipitates at PAGBs were smaller than those at packet boundaries, suggesting that boron segregation at PAGBs suppresses the carbide precipitation upon tempering.

引用

页数：9

共 38 条

[1] Precipitate design for creep strengthening of 9% Cr tempered martensitic steel for ultra-supercritical power plants
Abe, Fujio
[J]. SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS, 2008, 9 (01)
[2] Effect of Chromium, Aluminum and Nickel on Microstructure and Reverse-S Type Creep Rupture Strength of High Cr Ferritic Heat Resistant Steels
Asakura, Kentaro
Koseki, Toshihiko
Sato, Takashi
Arai, Masahiko
Horiuchi, Toshiaki
Tamura, Koji
Fujita, Toshio
[J]. ISIJ INTERNATIONAL, 2012, 52 (05) : 902 - 909
[3] Azuma T, 2002, TETSU TO HAGANE, V88, P678
[4] DIFFUSION AND SOLUBILITY OF BORON IN IRON AND STEEL
BUSBY, PE
WARGA, ME
WELLS, C
[J]. JOURNAL OF METALS, 1953, 5 (11): : 1463 - 1468
[5] COLDREN AP, 1975, METALL TRANS A, V6, P2304, DOI 10.1007/BF02818659
[6] Grain-boundary segregation of boron in high-strength steel studied by nano-SIMS and atom probe tomography
Da Rosa, G.
Maugis, P.
Portavoce, A.
Drillet, J.
Valle, N.
Lentzen, E.
Hoummada, K.
[J]. ACTA MATERIALIA, 2020, 182 : 226 - 234
[7] Fukuda M, 2017, WOODHEAD PUBL SER EN, P733, DOI 10.1016/B978-0-08-100552-1.00022-1
[8] H Kaneko T., 1966, J JPN I MET, V30, P157, DOI DOI 10.2320/JINSTMET1952.30.2_157
[9] QUANTITATIVE-ANALYSIS OF BORON IN STEEL BY SECONDARY ION MASS-SPECTROMETRY USING ION-IMPLANTED IRON AS STANDARD
HASHIMOTO, S
DOI, S
TAKAHASHI, K
TERASAKA, M
IWAKI, M
[J]. MATERIALS SCIENCE AND ENGINEERING, 1987, 90 : 119 - 125
[10] THE GRAIN-BOUNDARY SEGREGATION OF BORON DURING ISOTHERMAL HOLDING
HE, XL
CHU, YY
JONAS, JJ
[J]. ACTA METALLURGICA, 1989, 37 (11): : 2905 - 2916

← 1 2 3 4 →