Fluorescence spectroscopy applied to study cyclic creep behaviour and internal stresses of semi-crystalline high-density polyethylene

2013 ◽  
Vol 113 (2) ◽  
pp. 024901 ◽  
Author(s):  
G. Bouvet ◽  
L. Douminge ◽  
X. Feaugas ◽  
S. Touzain ◽  
S. Mallarino
Keyword(s):  
Fluorescence Spectroscopy ◽  
High Density Polyethylene ◽  
Creep Behaviour ◽  
Cyclic Creep ◽  
High Density ◽  
Internal Stresses ◽  
Cyclic Creep Behaviour

scholarly journals Cyclic creep behaviour of two-phase Ti-6Al-2Mo-2Cr alloy

2020 ◽  
Vol 321 ◽  
pp. 11079
Author(s):  
Waldemar Ziaja ◽  
Maciej Motyka ◽  
Krzysztof Kubiak ◽  
Jan Sieniawski
Keyword(s):  
Heat Treatment ◽  
Elevated Temperature ◽  
Titanium Alloys ◽  
Creep Behaviour ◽  
Strong Dependence ◽  
Cyclic Creep ◽  
Tensile Creep ◽  
Two Phase ◽  
Creep Properties ◽  
Cyclic Creep Behaviour

One of the important criteria for selection titanium alloys for discs and blades of turbine engine compressor is their fatigue and creep strength at room and elevated temperature. Fatigue and creep properties of two-phase titanium alloys show strong dependence on microstructure, especially morphology of the α and β phases which can be controlled to certain extent by proper selection of hot working and heat treatment conditions. Quantitative description of two-phase titanium alloys behaviour under loading and environmental conditions leading to combined creep and fatigue processes has been always very challenging task due to large number of factors affecting deformation and fracture behaviour of the material. In the course of the research cyclic creep behaviour of Ti-6Al-2Mo-2Cr alloy (VT3-1) was investigated and compared to low-cycle fatigue and static creep properties at the temperature of 450°C. Microstructure of the alloy was varied by means of the heat treatment. Constant load tensile creep tests were carried out. Tension-tension cyclic loading was applied at the constant stress ratio with and without hold time at maximum load. The effect of test parameters on the creep-fatigue life at elevated temperature was estimated. Characteristic features of fracture surfaces were identified by scanning electron microscopy methods.

scholarly journals Cyclic creep behaviour and strain classification of a bainite 2.25Cr-1Mo steel at 455oC

2020 ◽  
Author(s):  
Hao Jiang ◽  
Oluwadamilola Ogunmola ◽  
Zizhen Zhao ◽  
Xu Chen
Keyword(s):  
Creep Behaviour ◽  
Cyclic Creep ◽  
Cyclic Creep Behaviour
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