Investigation of Temperature Dependence of Weibull Parameters of the Beremin Model in Ductile-Brittle Transition Temperature Region

2021 ◽  
Author(s):  
Kiminobu Hojo ◽  
Takatoshi Hirota ◽  
Yasuto Nagoshi ◽  
Naoki Ogawa ◽  
Kentaro Yoshimoto
Keyword(s):  
Transition Temperature ◽  
Temperature Dependence ◽  
Temperature Region ◽  
Weibull Parameters ◽  
Brittle Transition ◽  
Ductile Brittle Transition Temperature ◽  
Brittle Transition Temperature

Temperature Dependence of Barkhausen Noise Parameters in Carbon Steel

2007 ◽  
Vol 537-538 ◽  
pp. 371-380
Author(s):  
L. Harasztosi ◽  
Lajos Daróczi ◽  
I.A. Szabó ◽  
Z. Balogh ◽  
Dezső L. Beke
Keyword(s):  
Transition Temperature ◽  
Temperature Dependence ◽  
Probability Distributions ◽  
Barkhausen Noise ◽  
Inflexion Point ◽  
Exciting Field ◽  
Brittle Transition ◽  
Ductile Brittle Transition Temperature ◽  
Brittle Transition Temperature ◽  
Increasing Temperature

Temperature dependence of different parameters (the position of the inflexion point and the saturation value on the root main square, RMS, values versus exciting field curves) of the Barkhausen noise is measured in structural steel (S 235 JRG1). It is shown that while the position of the inflexion point remained constant, the RMS value at the inflexion point and saturation value increased with the increasing temperature, T. Most interestingly the field required for saturation decreased with decreasing temperature and had a breakpoint at about 200K. Breakpoints at the same temperature on the critical exponents versus temperature functions (i.e. on the β(T) and α(T) curves, where β and α are the exponents of the probability distributions of peak heights and durations, respectively) were also observed. This temperature can be identified as the ductile-brittle transition temperature.

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