scholarly journals Two-Stage Steady State Creep Behavior of Zircaloy-4 in High Temperature Creep Condition

2016 ◽  
Vol 65 (10) ◽  
pp. 695-699
Author(s):  
Tetsuya MATSUNAGA ◽  
Hiromichi HONGO ◽  
Masaaki TABUCHI
Keyword(s):  
Steady State ◽  
High Temperature ◽  
Creep Behavior ◽  
Creep Condition ◽  
Steady State Creep ◽  
High Temperature Creep ◽  
Two Stage ◽  
Temperature Creep

High Temperature Creep Behavior of Zn-1.0Cu-0.2Ti Alloy

2011 ◽  
Vol 287-290 ◽  
pp. 769-776 ◽  
Author(s):  
Lai Rong Xiao ◽  
Xi Min Zhang ◽  
Yan Wang ◽  
Wei Li ◽  
Quan Sheng Sun ◽  
...  
Keyword(s):  
Steady State ◽  
High Temperature ◽  
Creep Rate ◽  
Grain Boundary ◽  
Testing Machine ◽  
Steady State Creep ◽  
Diffusional Creep ◽  
High Temperature Creep ◽  
Steady State Creep Rate ◽  
Temperature Creep

In the present work, Zn-1.0Cu-0.2Ti alloy was prepared by melt casting and extruding processes. High temperature creep property of the alloy was determined using electronic creep relaxation testing machine. Microstructures of the alloy before and after creep test were observed and its high temperature creep mechanism was discussed. The results show that the steady-state creep rate of the alloy increases with temperature and stress. The logarithm of steady-state creep rate (ln) shows a linearity relationship with the logarithm of the stress (lnσ) and reciprocal of temperature (1/T). The stress exponent and apparent activation energy for creep have been determined to be 5.10 and 83.7 kJ/mol, separately. The predominant mechanism is mainly self-diffusional creep. The second phases on the grain boundary can block the slip of grain boundary and dislocation motion which can improve creep resistance of the alloy.

High temperature creep behavior of thixoformed nickel-based superalloy parts

2021 ◽  
pp. 141216
Author(s):  
Guanfei Xiao ◽  
Jufu Jiang ◽  
Ying Wang ◽  
Yingze Liu ◽  
Ying Zhang ◽  
...  
Keyword(s):  
High Temperature ◽  
Creep Behavior ◽  
High Temperature Creep ◽  
Temperature Creep ◽  
Nickel Based Superalloy

scholarly journals High-Temperature Creep Behavior of a Dispersion- and Solution-Hardened Al-3.1 at%Mg-1.3 vol%Be Alloy—Absence of Threshold Stress

1989 ◽  
Vol 53 (3) ◽  
pp. 296-302 ◽  
Author(s):  
Ying-Hwa Yeh ◽  
Masakazu Miyachi ◽  
Hideharu Nakashima ◽  
Hiroaki Kurishita ◽  
Shoji Goto ◽  
...  
Keyword(s):  
High Temperature ◽  
Creep Behavior ◽  
Threshold Stress ◽  
High Temperature Creep ◽  
Temperature Creep

scholarly journals Effect of Grain Boundary Carbide on High Temperature Creep Behavior of 15Cr-25Ni Steel

1989 ◽  
Vol 75 (3) ◽  
pp. 545-552 ◽  
Author(s):  
Junshan ZHANG ◽  
Weishing CHEN ◽  
Ziben CAO ◽  
Ryohei TANAKA
Keyword(s):  
High Temperature ◽  
Grain Boundary ◽  
Creep Behavior ◽  
Boundary Carbide ◽  
High Temperature Creep ◽  
Temperature Creep

Study on High-Temperature Creep Behavior of T23 and T24 Steels

2018 ◽  
Vol 789 ◽  
pp. 182-186
Author(s):  
Jin Ping Pan ◽  
Shu Heng Tu ◽  
Ding Jun Chu ◽  
Xin Wei Zhu ◽  
Bin Hu ◽  
...  
Keyword(s):  
High Temperature ◽  
Creep Behavior ◽  
Rupture Strength ◽  
Progressive Increase ◽  
High Temperature Creep ◽  
Creep Tests ◽  
Theoretical Simulation ◽  
Temperature Creep ◽  
Piping Systems ◽  
Different Temperatures

A progressive increase of plant efficiency calls for new requirements of heat-resistantsteels used in the boiler and piping systems. In this paper, high-temperature creep behavior of T23and T24 steels were studied. Creep tests over a long period of time have been conducted for bothsteels at different temperatures. The creep mechanisms of the two steels have been clarified byanalyzing the minimum creep rate versus stress data. Besides, the creep rupture data from the creeptests were in good accordance with theoretical simulation on the basis of the CDM model over a longtime. Creep temperature has great effects on the rupture strength of the two steels. By creep ruptureexperiments and appropriate modelling, the high-temperature creep behavior can be well described.

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