Steel 40KhNMA (handbook data)

1969 ◽  
Vol 11 (10) ◽  
pp. 788-791
Author(s):  
A. P. Gulyaev ◽  
O. N. Meshcherinova ◽  
L. P. Chizhik ◽  
V. N. Zikeev ◽  
G. A. Khasin ◽  
...  
Keyword(s):  
Handbook Data ◽  
Steel 40Khnma

Increasing the fatigue life of steel 40KhNMA by tempering under stress

1975 ◽  
Vol 17 (5) ◽  
pp. 425-427
Author(s):  
F. I. Shor ◽  
S. O. Suvorova ◽  
V. I. Sarrak ◽  
R. I. �ntin ◽  
V. M. Belov
Keyword(s):  
Fatigue Life ◽  
Steel 40Khnma

Life Assessment of Hot Reheat Steam Pipe

1990 ◽  
Vol 112 (1) ◽  
pp. 20-27 ◽  
Author(s):  
C. E. Jaske
Keyword(s):  
Life Assessment ◽  
Design Parameters ◽  
Operating Parameters ◽  
Material Base ◽  
Handbook Data ◽  
Damage And Fracture ◽  
Actual Operating ◽  
Reheat Steam ◽  
Steam Pipe ◽  
Level 1

A methodology for assessing the remaining life of hot reheat steam pipe with longitudinal flaws, such as those typically associated with the longitudinal seam welds, has been developed. The approach uses three levels of analysis. Level 1 employs handbook data, assumed flaw sizes, and design parameters. Level 2 employs handbook data, assumed flaw sizes, and actual operating parameters. Level 3 is tailored to a specific case and uses measured data, inspection results, and actual operating parameters. A computer code was developed to apply this approach to hot reheat steam pipe of 2-1/4Cr-1Mo and 1-1/4Cr-1/2Mo-Si steel. Using data from an EPRI survey (RP2596-7), the results of Level 1 analysis were found to predict the potential for creep damage and fracture and to correlate well with past experience, whereas the traditional lower-bound Larson-Miller approach was generally overly optimistic in predicting remaining service life. The approach predicts creep-crack-growth life and assesses the potential of rapid, unstable fracture occurring before a significant amount of leaking takes place. The usefulness of the methodology is illustrated by means of example analyses of a typical cases that might be expected in service. The parameters that were varied in these analyses include type of material (base metal or weld metal), pressure, temperature, pipe wall thickness, and initial flaw size. The approach provides a preliminary tool to help make inspection, operating, and replacement decisions; but additional work is required to validate it as a general tool.

Effect of the shape of nonmetallic inclusions on the fracture of experimental-commercial steel 40KhNMA

1981 ◽  
Vol 23 (5) ◽  
pp. 318-320
Author(s):  
I. V. Yunakova ◽  
A. V. Smirnova ◽  
T. F. Meshcherinova
Keyword(s):  
Nonmetallic Inclusions ◽  
Steel 40Khnma ◽  
Commercial Steel

Nitriding and low-temperature cyaniding of steel 40KhNMA

1970 ◽  
Vol 12 (7) ◽  
pp. 607-608
Author(s):  
V. I. Tsypak ◽  
P. G. Vaurin
Keyword(s):  
Low Temperature ◽  
Steel 40Khnma
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