Deformation mechanisms in h.c.p. metals at elevated temperatures—I. Creep behavior of magnesium

1981 ◽  
Vol 29 (12) ◽  
pp. 1969-1982 ◽  
Author(s):  
Suresh S. Vagarali ◽  
Terence G. Langdon
Keyword(s):  
Creep Behavior ◽  
Elevated Temperatures ◽  
Deformation Mechanisms

Creep behavior and deformation mechanisms of a novel directionally solidified Ni-base superalloy at 900 °C

2019 ◽  
Vol 148 ◽  
pp. 201-207 ◽  
Author(s):  
P. Zhang ◽  
J. Li ◽  
X.F. Gong ◽  
Y. Yuan ◽  
Y.F. Gu ◽  
...  
Keyword(s):  
Creep Behavior ◽  
Deformation Mechanisms ◽  
Directionally Solidified ◽  
Base Superalloy

Tensile Properties and Creep Behavior of SiC-Based Fibers under Various Oxygen Partial Pressures

2005 ◽  
Vol 475-479 ◽  
pp. 1333-1336 ◽  
Author(s):  
Jan Ji Sha ◽  
J.S. Park ◽  
Tatsuya Hinoki ◽  
Akira Kohyama ◽  
J. Yu
Keyword(s):  
Oxygen Partial Pressure ◽  
Partial Pressure ◽  
Tensile Properties ◽  
Creep Behavior ◽  
Elevated Temperatures ◽  
Low Oxygen ◽  
X Ray Diffraction ◽  
Sic Fibers ◽  
Partial Pressures ◽  
Ar Gas

Three kinds of atmospheres (air, highly-pure Ar and ultra highly-pure Ar gas) with different oxygen partial pressures were applied to investigate the tensile properties and creep behavior of SiC fibers such as Hi-NicalonTM and TyrannoTM-SA. These fibers were annealed and crept at elevated temperatures ranging from1273-1773 K in such environments. After annealing at 1773 K, the room temperature tensile strengths of SiC-based fibers decreased with decreasing the oxygen partial pressure and the near stoichiometric fiber TyrannoTM-SA shows excellent strength retention. At temperatures above the 1573 K, the creep resistance of SiC fibers evaluated by bending stress relaxation (BSR) method under high oxygen partial pressure was lower than that of in low oxygen partial pressure. The microstructural features on these fibers were examined by scanning electron microscopy (SEM) and X-ray diffraction (XRD).

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