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
2009 ◽  
Vol 58 (2) ◽  
pp. 128-135
Author(s):  
Hiroyuki HAYAKAWA ◽  
Satoshi NAKASHIMA ◽  
Yoshihiro YAKABE ◽  
Junichi KUSUMOTO ◽  
Akihiro KANAYA ◽  
...  

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

2009 ◽  
Vol 86 (9) ◽  
pp. 556-562 ◽  
Author(s):  
Hiroyuki Hayakawa ◽  
Satoshi Nakashima ◽  
Junichi Kusumoto ◽  
Akihiro Kanaya ◽  
Hideharu Nakashima

2005 ◽  
Vol 488-489 ◽  
pp. 749-752 ◽  
Author(s):  
Su Gui Tian ◽  
Keun Yong Sohn ◽  
Hyun Gap Cho ◽  
Kyung Hyun Kim

Creep behavior of AM50-0.4% Sb-0.9%Gd alloy has been studied at temperatures ranging from 150 to 200°C and at stresses ranging from 40 to 90 MPa. Results show that the creep rate of AM50-0.4%Sb-0.9%Gd alloy was mainly controlled by dislocation climb at low stresses under 50 MPa. The activation energy for the creep was 131.2 ± 10 kJ/mol and the stress exponent was in the range from 4 to 9 depending on the applied stress. More than one deformation-mechanism were involved during the creep of this alloy. Microstructures of the alloy consist of a–Mg matrix and fine particles, distinguished as Mg17Al12, Sb2Mg3, and Mg2Gd or Al7GdMn5 that were homogeneously distributed in the matrix of the alloy, which effectively reduced the movement of dislocations, enhancing the creep resistance. Many dislocations were identified to be present on non-basal planes after creep deformation.


1992 ◽  
Vol 56 (4) ◽  
pp. 390-398 ◽  
Author(s):  
Fuyuki Yoshida ◽  
Norio Matsuda ◽  
Keisuke Matsuura

2012 ◽  
Vol 27 (9) ◽  
pp. 1314-1323 ◽  
Author(s):  
Chun-Wei Chang ◽  
Min-Hao Hong ◽  
Wei-Fan Lee ◽  
Kuan-Ching Lee ◽  
Li-De Tseng ◽  
...  

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