Damage mechanisms of C/SiC composites subjected to constant load and thermal cycling in oxidizing atmosphere

2006 ◽  
Vol 54 (2) ◽  
pp. 163-168 ◽  
Author(s):  
Hui Mei ◽  
Laifei Cheng ◽  
Litong Zhang
Keyword(s):  
Thermal Cycling ◽  
Constant Load ◽  
Damage Mechanisms ◽  
Oxidizing Atmosphere ◽  
Sic Composites

Damage Mechanisms of 5A06 Al Alloy Weld Joints under Constant Load and Thermal Cycling Condition

2007 ◽  
Vol 539-543 ◽  
pp. 368-373 ◽  
Author(s):  
Cheng Jin ◽  
Ji Tai Niu ◽  
Shi Yu He ◽  
Hong Bin Geng ◽  
G. Long
Keyword(s):  
Thermal Cycling ◽  
Mechanical Performance ◽  
Base Material ◽  
Constant Load ◽  
Al Alloy ◽  
Damage Mechanisms ◽  
Weld Joints ◽  
Thermal Cycling Condition ◽  
Cycling Condition ◽  
Alloy Weld

In this paper, the micro-damage mechanisms of 5A06 Al alloy weld joints have been studied under the condition of constant load and cyclic thermal load. The mechanical performance variation of the base material and its weld joint are analyzed and compared. Microstructure analysis reveals that the main damage mechanism in weld joints is the interior voids nucleation and growth. The voids distribution and evolution govern the damage process. Test results also show most fractures occur at HAZ near the welding fusion line. The development of these voids results in the performance deterioration of the weld joints under thermal cycling condition.

Effect of fiber architectures on thermal cycling damage of C/SiC composites in oxidizing atmosphere

2007 ◽  
Vol 460-461 ◽  
pp. 306-313 ◽  
Author(s):  
Hui Mei ◽  
Laifei Cheng ◽  
Litong Zhang ◽  
Yongdong Xu
Keyword(s):  
Thermal Cycling ◽  
Oxidizing Atmosphere ◽  
Sic Composites

Thermal cycling behavior of La2Zr2O7/Yb2Si2O7/SiC coated PIP Cf/SiC composites under burner rig tests

2021 ◽  
Vol 41 (7) ◽  
pp. 4058-4066
Author(s):  
Pengju Chen ◽  
Peng Xiao ◽  
Zhuan Li ◽  
Yang Li ◽  
Sian Chen ◽  
...  
Keyword(s):  
Thermal Cycling ◽  
Sic Composites ◽  
Thermal Cycling Behavior ◽  
Cycling Behavior

scholarly journals Fatigue Damage of Al/SiC Composites - Macroscopic and Microscopic Analysis

2015 ◽  
Vol 60 (1) ◽  
pp. 101-105 ◽  
Author(s):  
A. Rutecka ◽  
Z.L. Kowalewski ◽  
K. Makowska ◽  
K. Pietrzak ◽  
L. Dietrich
Keyword(s):  
Fatigue Damage ◽  
Microscopic Analysis ◽  
Inelastic Strain ◽  
Damage Parameter ◽  
Fatigue Tests ◽  
Cyclic Plasticity ◽  
Damage Mechanisms ◽  
Before And After ◽  
Fatigue Damage Parameter ◽  
Sic Composites

Abstract The results of comparative examinations of mechanical behaviour during fatigue loads and microstructure assessment before and after fatigue tests were presented. Composites of aluminium matrix and SiC reinforcement manufactured using the KoBo method were investigated. The combinations of two kinds of fatigue damage mechanisms were observed. The first one governed by cyclic plasticity and related to inelastic strain amplitude changes and the second one expressed in a form of ratcheting based on changes in mean inelastic strain. The higher SiC content the less influence of the fatigue damage mechanisms on material behaviour was observed. Attempts have been made to evaluate an appropriate fatigue damage parameter. However, it still needs further improvements.

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