Predicting creep deformation of heat-resistant metals

1975 ◽  
Vol 7 (7) ◽  
pp. 820-824
Author(s):  
V. I. Kovpak
Keyword(s):  
Creep Deformation ◽  
Heat Resistant ◽  
Heat Resistant Metals

Investigation on Creep Behavior of Grade 91 Heat-Resistant Steel at 923K

2016 ◽  
Vol 853 ◽  
pp. 163-167
Author(s):  
Fa Cai Ren ◽  
Xiao Ying Tang
Keyword(s):  
Creep Rate ◽  
Creep Behavior ◽  
Creep Deformation ◽  
Deformation Behavior ◽  
Minimum Creep Rate ◽  
Resistant Steel ◽  
Creep Tests ◽  
Heat Resistant Steel ◽  
Heat Resistant ◽  
Grade 91

Creep deformation behavior of SA387Gr91Cl2 heat-resistant steel used for steam cooler has been investigated. Creep tests were carried out using flat creep specimens machined from the normalized and tempered plate at 973K with stresses of 100, 125 and 150MPa. The minimum creep rate and rupture time dependence on applied stress was analyzed. The analysis showed that the heat-resistant steel obey Monkman-Grant and modified Monkman-Grant relationships.

Creep Deformation Analyses for Grade 91 Steels Considering Heat-to-Heat Variation

2018 ◽  
Author(s):  
Haruhisa Shigeyama ◽  
Yukio Takahashi ◽  
John Siefert ◽  
Jonathan Parker
Keyword(s):  
Creep Strain ◽  
Creep Deformation ◽  
Deformation Behavior ◽  
Power Plants ◽  
Primary Creep ◽  
Heat Resistant ◽  
Large Heat ◽  
Reasonable Prediction ◽  
Materials Used ◽  
Grade 91

In order to evaluate creep life of heat-resistant materials used in power plants, it is important to estimate variation of stress distribution caused by creep deformation appropriately. For achieving this, creep strain equations which can express the creep deformation behavior with good accuracy are indispensable. Additionally, a lot of heat-resistant steels show large heat-to-heat variations in creep properties. Therefore, it is also important to take into account of the heat-to-heat variations in the creep analyses. In this study, existing creep strain equations for Grade 91 steel were applied to six heats with a variety of creep strength and creep deformation behavior. Furthermore, some modification was made in order to obtain better agreement with test data in primary creep stage. It was found that reasonable agreements were obtained between the measured creep deformation behavior and predictions obtained by these equations only by changing creep rupture property depending on the particular heats. This suggests that reasonable prediction for creep deformation can be made even for the materials lacking the information of creep deformation as long as their rupture properties are known.

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

scholarly journals Effect of B on Microstructural Change during Creep Deformation in High Cr Ferritic Heat Resistant Steel

2002 ◽  
Vol 88 (10) ◽  
pp. 678-685 ◽  
Author(s):  
Tsukasa AZUMA ◽  
Kazuhiro MIKI ◽  
Yasuhiko TANAKA ◽  
Tohru ISHIGURO
Keyword(s):  
Creep Deformation ◽  
Microstructural Change ◽  
Resistant Steel ◽  
Heat Resistant Steel ◽  
Heat Resistant

scholarly journals The refractory compositions designing for the highly-heat-resistant ceramic products in the foundry practice

2018 ◽  
pp. 18-23
Author(s):  
M. S. Varfolomeev ◽  
G. I. Shcherbakova
Keyword(s):  
Ceramic Materials ◽  
Thermal And Mechanical Properties ◽  
Heat Resistant ◽  
Magnesium Compounds ◽  
Different Temperatures ◽  
Bonding Phase ◽  
Heat Resistant Metals ◽  
Α Al2o3 ◽  
Semidry Pressing ◽  
Resistant Ceramic

The sintering peculiarities of the ceramic materials which had been prepared by means of semidry pressing are investigated in the article. The fillers were the yttrium oxide Y2O3 and the fused corundum α-Al2O3, the bonding phase was the aluminoxane addition either pure or modified by the yttrium and magnesium compounds. We investigated the processes occurring at the examined ceramics sintering at different temperatures and their influence on the obtained ceramics properties. The phase composition, the thermal and mechanical properties of the test samples at 1500 °C are presented. The produced test ceramic crucibles have advanced thermal resistance and stability against the thermal cycling. The possibility is regarded to use the developed ceramic crucibles for melting and casting of the chemically reactive highly-heat-resistant metals and alloys.

scholarly journals An Investigation of Accelerated Oxidation of Heat Resistant Metals Due to Vanadium

1955 ◽  
Vol 4 (3) ◽  
pp. 111-114,116
Author(s):  
Forest C. Monkman ◽  
Nicholas J. Grant
Keyword(s):  
Accelerated Oxidation ◽  
Heat Resistant ◽  
Heat Resistant Metals

Heat-resistant metals in Mendeleev’s periodic table

2012 ◽  
Vol 57 (6) ◽  
pp. 768-772
Author(s):  
N. V. Podberezskaya
Keyword(s):  
Periodic Table ◽  
Heat Resistant ◽  
Heat Resistant Metals
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