scholarly journals Thermographic Study of AZ31B Magnesium Alloy under Cyclic Loading: Temperature Evolution Analysis and Fatigue Limit Estimation

Materials ◽  
2020 ◽  
Vol 13 (22) ◽  
pp. 5209
Author(s):  
Shaofei Guo ◽  
Xuesong Liu ◽  
Hongxia Zhang ◽  
Zhifeng Yan ◽  
Zhongdian Zhang ◽  
...  
Keyword(s):  
Magnesium Alloy ◽  
Fatigue Limit ◽  
Cyclic Hardening ◽  
Processing Method ◽  
Temperature Data ◽  
Temperature Evolution ◽  
Az31b Magnesium Alloy ◽  
Evolution Analysis ◽  
Data Processing Method ◽  
Thermographic Study

In this paper, infrared thermography was employed to study the fatigue process of AZ31B magnesium alloy. In order to eliminate the interference caused by the temperature rise of the fixture, a data processing method was proposed, which is based on a special model to describe the temperature change of the specimen. Based on the temperature data after processing, the temperature evolution indicates that AZ31B magnesium alloy has undergone cyclic hardening during fatigue. Three different temperature indicators were selected to evaluate the fatigue limit based on the evolution curve after processing. In addition, the experimental results showed that the temperature data processed by the proposed method can be used to estimate the fatigue limit of AZ31B magnesium alloy. Experiments were performed for both extrusion and transverse directions in consideration of the anisotropy of the AZ31B.

scholarly journals Fatigue Limit Evaluation of AZ31B Magnesium Alloy Based on Temperature Distribution Analysis

Metals ◽  
2020 ◽  
Vol 10 (10) ◽  
pp. 1331
Author(s):  
Shaofei Guo ◽  
Xuesong Liu ◽  
Hongxia Zhang ◽  
Zhifeng Yan ◽  
Hongyuan Fang
Keyword(s):  
Temperature Distribution ◽  
Magnesium Alloy ◽  
Fatigue Limit ◽  
Infrared Camera ◽  
Processing Method ◽  
Distribution Analysis ◽  
Az31b Magnesium Alloy ◽  
Thermal Indicator ◽  
Data Processing Method ◽  
Thermal Indicators

In this paper, the fatigue limit of AZ31B magnesium alloy is evaluated according to the surface temperature of the specimen during the test. Considering the influence of external heating, a special data-processing method is used to filter the raw temperature data obtained by the infrared camera. A thermal indicator based on the analysis of superficial temperature distribution is described and proposed. In contrast, most existing thermal indicators are calculated based on temperature evolution. Three existing algorithms were used to evaluate the fatigue limit of AZ31B magnesium alloy based on the newly proposed thermal indicator. In addition, the results of the test were used to compare with the results of traditional methods. It has been proved that the fatigue limit of AZ31B magnesium alloy can be assessed by using the new thermal indicator based on temperature distribution.

Temperature evolution analysis of AZ31B magnesium alloy during quasi-static fracture

2016 ◽  
Vol 32 (12) ◽  
pp. 1276-1281 ◽  
Author(s):  
H. X. Zhang ◽  
Z. N. Wang ◽  
Y. G. Zhou ◽  
S. F. Guo ◽  
Z. F. Yan ◽  
...  
Keyword(s):  
Magnesium Alloy ◽  
Temperature Evolution ◽  
Az31b Magnesium Alloy ◽  
Evolution Analysis ◽  
Static Fracture

Rapid evaluation of fatigue limit in AZ31B magnesium alloy using acoustic emission

2018 ◽  
Vol 34 (12) ◽  
pp. 1480-1488
Author(s):  
Chenghao Li ◽  
Zhifeng Yan ◽  
Peng Dong ◽  
Yinghu Su ◽  
Xiaojiao Wang ◽  
...  
Keyword(s):  
Acoustic Emission ◽  
Magnesium Alloy ◽  
Fatigue Limit ◽  
Rapid Evaluation ◽  
Az31b Magnesium Alloy

Cyclic hardening/softening behaviour in AZ31B magnesium alloy based on infrared thermography

2016 ◽  
Vol 33 (2) ◽  
pp. 181-188 ◽  
Author(s):  
Z. N. Wang ◽  
H. X. Zhang ◽  
Z. F. Yan ◽  
Z. Q. Xu ◽  
X. J. Wang ◽  
...  
Keyword(s):  
Magnesium Alloy ◽  
Infrared Thermography ◽  
Cyclic Hardening ◽  
Az31b Magnesium Alloy ◽  
Softening Behaviour

scholarly journals Fatigue Performance Evaluation of AZ31B Magnesium Alloy Based on Statistical Analysis of Self-Heating

Materials ◽  
2021 ◽  
Vol 14 (9) ◽  
pp. 2251
Author(s):  
Shaofei Guo ◽  
Xuesong Liu ◽  
Hongxia Zhang ◽  
Zhifeng Yan ◽  
Hongyuan Fang
Keyword(s):  
Statistical Analysis ◽  
Magnesium Alloy ◽  
Fatigue Limit ◽  
Extrusion Direction ◽  
Assessment Method ◽  
The Self ◽  
Load Curve ◽  
Az31b Magnesium Alloy ◽  
Self Heating ◽  
Heating Behavior

AZ31B magnesium alloy is the experimental material in this study. Considering its anisotropy, fatigue assessment based on self-heating is carried out for both the extrusion direction and the transverse direction. The self-heating behavior in the two orientations is compared. Similar to steels, an obvious inflection point that corresponds to the fatigue limit can be found in the self-heating vs. load curve for AZ31B. A new fatigue limit assessment method is proposed based on a statistical analysis of self-heating data. This method can provide a satisfactory assessment of the fatigue limit for AZ31B in the both orientations.

Cyclic Hardening Behavior of Extruded AZ31B Magnesium Alloy during Low Cycle Fatigue Process

2013 ◽  
Vol 395-396 ◽  
pp. 234-237
Author(s):  
Guo Sheng Duan ◽  
Bao Lin Wu ◽  
Xiang Zhao ◽  
Gang Zhao
Keyword(s):  
Magnesium Alloy ◽  
Dislocation Density ◽  
Strain Amplitude ◽  
Low Cycle Fatigue ◽  
Cyclic Hardening ◽  
Strain Ratio ◽  
Plastic Strain Amplitude ◽  
Cycle Fatigue ◽  
Az31b Magnesium Alloy ◽  
Hardening Behavior

The strain-controlled fatigue tests on extruded AZ31B magnesium alloy were conducted under the uniaxial loading with strain ratio Rε=-∞, frequency of 0.1 Hz and strain amplitude of 2% at room temperature. The cyclic hardening behavior was investigated. It was found that, during the low cycle fatigue (LCF) process, as the number of cycles increases, the stress amplitude increases corresponding to the decrease of the plastic strain amplitude. The development of dislocation density can be described as the function of the number of fatigue cycles, and the behavior can be explained well based on the dislocation density development model.

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