Ruiping Chen
Tohoku University
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Publication
Featured researches published by Ruiping Chen.
Journal of Physics: Conference Series | 2010
H. Ghassemi Armaki; Ruiping Chen; Sho Kano; Kouichi Maruyama; Masaaki Igarashi
The effect of Cr content on the thermal stability of tempered laths (or elongated subgrains) and precipitates has been studied during long-term aging at 650 °C in three P122 grade steels with increasing Cr content from 9 to 10.5 and 12%. Addition of Cr accelerates the coarsening of subgrains during long-term aging. The number fraction of MX precipitates does change up to 104 h aging in 9% and 10.5% Cr steels, whereas it decreases significantly in 12% Cr steel due to the formation of Z phase. The coarsening rate of M23C6 precipitates, mostly located on the subgrain boundaries, increases from 9 to 12% Cr and steel containing 9% Cr has the highest number density of M23C6 after 104 h aging. The addition of Cr from 9 to 12% accelerates the coarsening rate of Laves phase particles during aging. As a result, 9% Cr steel shows the most stable tempered lath martesitic structure during long-term aging.
Materials Letters | 2009
H. Ghassemi-Armaki; Ruiping Chen; Kouichi Maruyama; M. Yoshizawa; Masaaki Igarashi
Metallurgical and Materials Transactions A-physical Metallurgy and Materials Science | 2011
Hassan Ghassemi Armaki; Ruiping Chen; Kouichi Maruyama; Masaaki Igarashi
Materials Science and Engineering A-structural Materials Properties Microstructure and Processing | 2010
Hassan Ghassemi Armaki; Ruiping Chen; Kouichi Maruyama; Masaaki Igarashi
Journal of Nuclear Materials | 2013
H. Ghassemi-Armaki; Ruiping Chen; Kouichi Maruyama; Masaaki Igarashi
Materials Science and Engineering A-structural Materials Properties Microstructure and Processing | 2011
Ruiping Chen; H. Ghassemi Armaki; Kouichi Maruyama; Masaaki Igarashi
International Journal of Pressure Vessels and Piping | 2010
Kouichi Maruyama; H. Ghassemi Armaki; Ruiping Chen; Kyosuke Yoshimi; Mitsuru Yoshizawa; Masaaki Igarashi
Journal of Nuclear Materials | 2011
Hassan Ghassemi Armaki; Ruiping Chen; Satoshi Kano; Kouichi Maruyama; Yasushi Hasegawa; Masaaki Igarashi
Tetsu To Hagane-journal of The Iron and Steel Institute of Japan | 2010
Ruiping Chen; H. Ghassemi Armaki; Kyosuke Yoshimi; Kouichi Maruyama; Yusuke Minami; Masaaki Igarashi
Materials Science and Engineering A-structural Materials Properties Microstructure and Processing | 2012
Hassan Ghassemi Armaki; Ruiping Chen; Sho Kano; Kouichi Maruyama; Yasushi Hasegawa; Masaaki Igarashi
