scholarly journals Creep Deformation Characterization of Heat Resistant Steels by Stress Change Test

2009 ◽  
Vol 58 (2) ◽  
pp. 128-135
Author(s):  
Hiroyuki HAYAKAWA ◽  
Satoshi NAKASHIMA ◽  
Yoshihiro YAKABE ◽  
Junichi KUSUMOTO ◽  
Akihiro KANAYA ◽  
...  
Keyword(s):  
Creep Deformation ◽  
Stress Change ◽  
Heat Resistant ◽  
Heat Resistant Steels

Creep deformation characterization of heat resistant steel by stress change test

2009 ◽  
Vol 86 (9) ◽  
pp. 556-562 ◽  
Author(s):  
Hiroyuki Hayakawa ◽  
Satoshi Nakashima ◽  
Junichi Kusumoto ◽  
Akihiro Kanaya ◽  
Hideharu Nakashima
Keyword(s):  
Creep Deformation ◽  
Stress Change ◽  
Resistant Steel ◽  
Heat Resistant Steel ◽  
Heat Resistant

Novel scanning dc-susceptometer for characterization of heat-resistant steels with different states of aging

2017 ◽  
Vol 442 ◽  
pp. 311-318 ◽  
Author(s):  
João M.B. Pereira ◽  
Clara Johanna Pacheco ◽  
Monica P. Arenas ◽  
Jefferson F.D.F. Araujo ◽  
Gabriela R. Pereira ◽  
...  
Keyword(s):  
Heat Resistant ◽  
Heat Resistant Steels

scholarly journals Characterization of Creep Deformation Mechanism and Evaluation of Dislocation Mobility of Modified 9Cr-1Mo Steel by Stress Change Test

2003 ◽  
Vol 67 (1) ◽  
pp. 22-26 ◽  
Author(s):  
Hiroyuki Hayakawa ◽  
Daisuke Terada ◽  
Fuyuki Yoshida ◽  
Hideharu Nakashima ◽  
Yasufumi Gotou
Keyword(s):  
Creep Deformation ◽  
Deformation Mechanism ◽  
Stress Change ◽  
Dislocation Mobility

scholarly journals Characterization of Creep Deformation Behavior of 2.25Cr-1Mo Steel by Stress Change Test

2007 ◽  
Vol 93 (6) ◽  
pp. 466-471
Author(s):  
Hiroyuki HAYAKAWA ◽  
Daisuke TERADA ◽  
Fuyuki YOSHIDA ◽  
Hideharu NAKASHIMA ◽  
Akihiro KANAYA ◽  
...  
Keyword(s):  
Creep Deformation ◽  
Deformation Behavior ◽  
Stress Change

Evaluation of Creep Deformation Mechanism of Heat Resistant Steel by Stress Change Test

2007 ◽  
Author(s):  
Hiroyuki Hayakawa ◽  
Satoshi Nakashima ◽  
Junichi Kusumoto ◽  
Akihiro Kanaya ◽  
Daisuke Terada ◽  
...  
Keyword(s):  
Creep Rate ◽  
Dislocation Density ◽  
Creep Deformation ◽  
Deformation Mechanism ◽  
Mobile Dislocation ◽  
Stress Increment ◽  
Mobile Dislocation Density ◽  
Creep Tests ◽  
Heat Resistant ◽  
Heat Resistant Steels

In order to evaluate creep deformation mechanism of heat resistant steels, stress change tests were conducted during creep tests. In this study, it was confirmed that the dislocation behavior during the creep tests was in viscous manner, because no instantaneous plastic strain was observed at stress increments. Transient behavior was observed after stress changes for all kinds of steel in this work. Mobility of dislocation was evaluated by the observed backward creep behavior after stress reduction. Internal stress was evaluated by the change of creep rate in stress increment, and mobile dislocation density was evaluated with the estimated mobility of dislocation and the change of creep rate in stress increment. It was found that the variation of mobile dislocation density during creep deformation showed the same tendency as the variation of creep rate. Therefore mobile dislocation density is the dominant factor that influences the creep rate variation in creep deformation of heat resistant steels investigated in this work. The mobility of dislocation showed a good correlation with 1/T and it is related with the amount of solute Mo that is a solution strengthening element. Microstructure of crept specimens was observed by TEM to discuss the validation of these results.

scholarly journals Short-term creep of P91 heat-resistant steels at low stresses and an instantaneous-stress-change testing

2017 ◽  
Vol 51 (5) ◽  
pp. 843-847
Author(s):  
J. Zhe ◽  
S. Junjie ◽  
Z. Pengshuo
Keyword(s):  
Stress Change ◽  
Short Term ◽  
Heat Resistant ◽  
Term Creep ◽  
Heat Resistant Steels ◽  
Short Term Creep

Analysis of Creep Deformation Process of Heat Resistant Steels Using Positron Annihilation Lifetime

2007 ◽  
pp. 2233-2236
Author(s):  
Masaaki Igarashi ◽  
Koji Moriguchi ◽  
Seiichi Muneki ◽  
Fujio Abe ◽  
Yasuharu Shirai
Keyword(s):  
Positron Annihilation ◽  
Creep Deformation ◽  
Deformation Process ◽  
Positron Annihilation Lifetime ◽  
Heat Resistant ◽  
Heat Resistant Steels

Influence of long-term thermal ageing (＞10,000h) on low stress creep deformation of P92 heat-resistant steels

2020 ◽  
Vol 37 (3) ◽  
pp. 196-206
Author(s):  
Hui Kang ◽  
Junjie Shen ◽  
Hongguang Han ◽  
Shanjun Zhang ◽  
Fuyong Hu ◽  
...  
Keyword(s):  
Creep Deformation ◽  
Thermal Ageing ◽  
Heat Resistant ◽  
Heat Resistant Steels
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