Modelling creep rupture strength of ferritic steel welds

2000 ◽  
Vol 5 (2) ◽  
pp. 81-89 ◽  
Author(s):  
D. Cole ◽  
C. Martin-Moran ◽  
A.G. Sheard ◽  
H.K.D.H. Bhadeshia ◽  
D.J.C. MacKay
Keyword(s):  
Ferritic Steel ◽  
Rupture Strength ◽  
Creep Rupture ◽  
Creep Rupture Strength ◽  
Steel Welds

scholarly journals Effect of PWHT Conditions on Toughness and Creep Rupture Strength in Modified 9Cr-1Mo Steel Welds

2019 ◽  
Vol 38 (2019) ◽  
pp. 739-749 ◽  
Author(s):  
Satoru Nishikawa ◽  
Tadayuki Hasegawa ◽  
Makoto Takahashi
Keyword(s):  
Arc Welding ◽  
Power Plants ◽  
Rupture Strength ◽  
Creep Rupture ◽  
Creep Rupture Strength ◽  
Shielded Metal Arc Welding ◽  
Fracture Appearance Transition Temperature ◽  
Metal Arc Welding ◽  
Fracture Appearance ◽  
Steel Welds

AbstractWe clarified the effect of post weld heat treatment (PWHT) conditions on the toughness and creep rupture strength of modified 9Cr–1Mo steel weldments used for high temperature components of ultra-supercritical power plants. Fracture appearance transition temperature (FATT) decreased as PWHT temperature increased, and for all of the weld metals of tungsten inert gas welding, submerged arc welding and shielded metal arc welding, FATTs were lower than 293 K when the PWHT temperature was higher than 1,008 K. In contrast, in the uniaxial creep test with a loaded stress of 108 MPa, the creep rupture strength of the specimen on which PWHT was carried out for a holding time of 7.2 ks was significantly decreased when the PWHT temperature was more than 1,033 K. Therefore, the appropriate PWHT temperature range to maintain the toughness and creep fracture strength was 1,008 K ≤ T ≤ 1,033 K.

scholarly journals Improvement of Creep Rupture Strength of High Cr Ferritic Steel by Addition of W.

1995 ◽  
Vol 35 (3) ◽  
pp. 317-323 ◽  
Author(s):  
Yutaka Tsuchida ◽  
Kentato Okamoto ◽  
Yoshikuni Tokunaga
Keyword(s):  
Ferritic Steel ◽  
Rupture Strength ◽  
Creep Rupture ◽  
Creep Rupture Strength

scholarly journals HAZ Softening and Creep Rupture Strength of High Cr Ferritic Steel Weldments.

1995 ◽  
Vol 35 (10) ◽  
pp. 1284-1290 ◽  
Author(s):  
Toshifumi Kojima ◽  
Kenji Hayashi ◽  
Yasuyuki Kajita
Keyword(s):  
Ferritic Steel ◽  
Rupture Strength ◽  
Creep Rupture ◽  
Creep Rupture Strength
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