Creep life assessment of distribution transformers

2010 ◽  
Vol 17 (5) ◽  
pp. 1077-1085 ◽  
Author(s):  
N.S. Beniwal ◽  
D.K. Dwivedi ◽  
H.O. Gupta
Keyword(s):  
Life Assessment ◽  
Creep Life ◽  
Distribution Transformers ◽  
Creep Life Assessment

Superplastic Behaviour of AA5083 Aluminium Alloy with Scandium and Zirconium

2012 ◽  
Vol 706-709 ◽  
pp. 395-401 ◽  
Author(s):  
A. Smolej ◽  
B. Skaza ◽  
B. Markoli ◽  
Damjan Klobčar ◽  
V. Dragojević ◽  
...  
Keyword(s):  
Cold Rolling ◽  
Strain Rate ◽  
Aluminium Alloy ◽  
Wide Temperature Range ◽  
Initial Strain Rate ◽  
Initial Strain ◽  
Strain Rates ◽  
Superplastic Behaviour ◽  
Hot And Cold Rolling ◽  
Superplastic Properties

The aim of the present investigation was to determine and to compare the superplastic behaviour of the AA5083 (Al-Mg-Mn) alloy with Sc and Zr additions. The investigated alloys were processed to form sheets by conventional hot and cold rolling. The superplastic properties were determined with strain rates in the range of 1x10-4to 5x10-2s-1and forming temperatures of 350 to 550°C. The results showed that the alloy with about 0.4% Sc exhibited a high superplastic ductility across a wide temperature range and strain rates up to 1x10-2s-1. The highest elongations to failure of about 2000% were attained at 550°C and at an initial strain rate of 5x10-3s-1. However, the alloy with about 0.15% Zr exhibited elongations up to 600%. The FSP processed Al-4.5Mg alloy with combined addition of about 0.2% Sc and 0.15% Zr exhibited good superplastic properties at higher strain rates (> 1x10-2s-1) with elongations up to 1500%.

scholarly journals Influence of thermal-varying material properties on stress calculation for creep life assessment of seamless medium-carbon steel boiler tubes

2020 ◽  
Vol 844 ◽  
pp. 012029
Author(s):  
L M Castellanos-González ◽  
H Hernández Herrera ◽  
R Goytisolo Espinosa ◽  
L M Castellanos Molina ◽  
E E Vergara Verbel ◽  
...  
Keyword(s):  
Carbon Steel ◽  
Material Properties ◽  
Medium Carbon Steel ◽  
Life Assessment ◽  
Creep Life ◽  
Medium Carbon ◽  
Stress Calculation ◽  
Boiler Tubes ◽  
Creep Life Assessment ◽  
Steel Boiler
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