Multiaxial Creep of Textured Zircaloy-4

2009 ◽  
pp. 382-382-15 ◽  
Author(s):  
KL Murty ◽  
BL Adams
Keyword(s):  
Multiaxial Creep

Application of a Composite Model in the Analysis of Creep Deformation at Low and Intermediate Temperatures

2017 ◽  
Vol 139 (4) ◽  
Author(s):  
Xinjun Yang ◽  
Xiang Ling
Keyword(s):  
Projection Method ◽  
Power Law ◽  
Creep Deformation ◽  
Primary Creep ◽  
Composite Model ◽  
Intermediate Temperature ◽  
Model Parameters ◽  
Creep Life ◽  
Temperature Creep ◽  
Multiaxial Creep

The creep behaviors of TA2 and R60702 at low and intermediate temperature were presented and discussed in this paper. Experimental results indicated that an apparent threshold stress was exhibited in the creep deformation of R60702. Meanwhile, the primary creep phase was found as the main pattern in the room temperature creep behavior of TA2. Compared with the exponential law, the power law has been proved to be a proper constitutive model in the description of primary creep phase. It also showed that θ projection method had its significant advantage in the evaluation of accelerated creep stage. Thus, a composite model which combined power law with θ projection method was applied in the creep curves evaluation at low and intermediate temperature. Based on the multiaxial creep deformation results, the model was modified and discussed. A linear relationship existed between composite model parameters and applied load. Finally, the creep life of TA2 and R60702 could be accurately predicted by the composite model, and it is suitable for the application in low and intermediate temperature creep life analysis.

scholarly journals Extension of Classical Laminate Theory to the Anelastic Domain

1993 ◽  
Vol 2 (5) ◽  
pp. 096369359300200
Author(s):  
P. Lemoal ◽  
D. Perreux
Keyword(s):  
Numerical Methods ◽  
Mechanical Loading ◽  
Viscoelastic Layer ◽  
Creep Tests ◽  
Filament Wound ◽  
Non Linear ◽  
Laminate Theory ◽  
Linear Viscoelastic ◽  
Multiaxial Creep

An extension of classical laminate theory to the anelastic domain is proposed. It is based on numerical methods which describe the laminate's response to mechanical loading not analytically but step by step. This approach is applied to a behaviour model of a non linear viscoelastic layer and its application to multiaxial creep tests on filament wound tubes ± 55°is discussed.

Analysis on Fracture Morphology and Microstructure of T92 Steel after High Temperature Multiaxial Creep

2013 ◽  
Vol 860-863 ◽  
pp. 967-971
Author(s):  
Xue Ping Mao ◽  
Xiao Wang ◽  
Sai Dong Huang ◽  
Chao Li ◽  
Hong Xu ◽  
...  
Keyword(s):  
High Temperature ◽  
Stress State ◽  
Standard Specimen ◽  
Uniaxial Stress ◽  
Fracture Morphology ◽  
Multiaxial Stress ◽  
Creep Life ◽  
Creep Tests ◽  
Multiaxial Stress State ◽  
Multiaxial Creep

The high temperature creep tests of standard specimen and double U-type notch specimen of T92 steel were carried out under different stresses at 650 °C. Then optical microscopy and scanning electron microscopy were used to observe the fracture morphology and microstructure. The results show that the multiaxial stress state leads to the creep fracture cracking initiation in notch. Under multiaxial stress state, the failure mode of T92 steel is transgranular and dimple plastic fracture, and is more obvious with the increase of creep life. Compared with under uniaxial stress state, the precipitates under multiaxial stress state are larger in size and quantity, and are much coarser.

Experimental and numerical study on multiaxial creep behavior of 16MND5 steel at 700℃

2021 ◽  
pp. 153387
Author(s):  
Jian Zhu ◽  
DaSheng Wang ◽  
ShiYi Bao ◽  
Qiang Zhou ◽  
ZaiXiang Qin ◽  
...  
Keyword(s):  
Creep Behavior ◽  
Numerical Study ◽  
Multiaxial Creep
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