Evaluation of the fatigue properties of aluminum alloys D16T and AVT1 on the basis of limit stresses

1972 ◽  
Vol 4 (11) ◽  
pp. 1365-1371
Author(s):  
G. A. Deryagin
Keyword(s):  
Aluminum Alloys ◽  
Fatigue Properties

scholarly journals Microstructure and fatigue properties of extruded aluminum alloys 7046 and 7108 for automotive applications

2021 ◽  
Vol 14 ◽  
pp. 2970-2981
Author(s):  
C.S. Hattori ◽  
G.F.C. Almeida ◽  
R.L.P. Gonçalves ◽  
R.G. Santos ◽  
R.C. Souza ◽  
...  
Keyword(s):  
Aluminum Alloys ◽  
Fatigue Properties ◽  
Automotive Applications

scholarly journals Evaluation of Fatigue Characteristics of Aluminum Alloys and Mechanical Components Using Extreme Value Statistics and C-specimens

Metals ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 1915
Author(s):  
Jungsub Lee ◽  
Sang-Youn Park ◽  
Byoung-Ho Choi
Keyword(s):  
Aluminum Alloys ◽  
Fem Analysis ◽  
Extreme Value ◽  
Fatigue Tests ◽  
Extreme Value Statistics ◽  
Fatigue Properties ◽  
Chemical Compositions ◽  
Cross Sectional ◽  
Fatigue Characteristics ◽  
Mechanical Components

In this study, the fatigue characteristics of aluminum alloys and mechanical components were investigated. To evaluate the effect of forging, fatigue specimens with the same chemical compositions were prepared from billets and forged mechanical components. To evaluate the cleanliness of the aluminum alloys, the cross-sectional area of specimens was observed, and the maximum inclusion sizes were obtained using extreme value statistics. Rotary bending fatigue tests were performed, and the fracture surfaces of the specimens were analyzed. The results show that the forging process not only elevated the fatigue strength but also reduced the scatter of the fatigue life of aluminum alloys. The fatigue characteristics of C-specimens were obtained to develop finite-element method (FEM) models. With the intrinsic fatigue properties and strain–life approach, the FEM analysis results agreed well with the test results.

Effects of HIPping on high-cycle fatigue properties of investment cast A356 aluminum alloys

2003 ◽  
Vol 340 (1-2) ◽  
pp. 123-129 ◽  
Author(s):  
Min Ha Lee ◽  
Jae Joong Kim ◽  
Kyung Hoon Kim ◽  
Nack J. Kim ◽  
Sunghak Lee ◽  
...  
Keyword(s):  
Aluminum Alloys ◽  
High Cycle Fatigue ◽  
Fatigue Properties ◽  
Cycle Fatigue ◽  
Investment Cast ◽  
A356 Aluminum

New Estimation Method of Fatigue Properties of Aluminum Alloys

2003 ◽  
Vol 125 (2) ◽  
pp. 208-214 ◽  
Author(s):  
Jun-Hyub Park ◽  
Ji-Ho Song
Keyword(s):  
Aluminum Alloys ◽  
Optimization Technique ◽  
Estimation Method ◽  
Correlation Method ◽  
New Method ◽  
Fatigue Properties ◽  
Tensile Data ◽  
Point Correlation ◽  
Quantitative Manner ◽  
Life Predictions

A new method on estimating fatigue properties from simple tensile data was proposed for aluminum alloys. The method is based on experimental strain-life curves. An optimization technique was used to get the best fatigue properties. The four-point correlation method, the universal slopes method, Mitchell’s method, the modified universal slopes method, the uniform material law by Ba¨umel and Seeger, the modified four-point correlation method by Ong and a new method proposed in this work were evaluated in a quantitative manner. Mitchell’s method, the uniform materials law and the new method give good life predictions for aluminum alloys. In particular, the new method provided the best results.

Pore Size Distribution and the Fatigue Properties of Several Cast Aluminum Alloys

2010 ◽  
Vol 139-141 ◽  
pp. 251-254
Author(s):  
Yuan Bin Zhang ◽  
Hui Luo ◽  
Tong Guang Zhai
Keyword(s):  
Aluminum Alloys ◽  
Pore Size Distribution ◽  
Pore Size ◽  
Size Distribution ◽  
Fatigue Testing ◽  
Ambient Air ◽  
Fatigue Properties ◽  
Materials Testing ◽  
Cast Aluminum ◽  
Cast Aluminum Alloys

The population and size of porosities in three kinds of cast aluminum alloys, i.e. A713, A356T6-1 and A356T6-2, were statistically measured using a commercial software Spirit, and several distribution functions were tried to fit the cumulative pore size distribution data. It was found that a general extreme value (GEV) distribution function was the most appropriate function to quantify the cumulative pore size distribution in these cast aluminum alloys. The stress-number of cycles to failure (S-N) curves of these alloys were characterized by four point bend fatigue testing on MTS810 materials testing system, with the parameter f=20Hz, R=0.1, and in ambient air. The fatigue strength of A713, A356T6-1 and A356T6-2 aluminum alloy was measured to be 94.5 MPa, 150.6MPa and 117.3MPa respectively. The fatigue properties of these alloys could not be evaluated just by population and size distribution of the pores, the microstructure state, shape and position of pores, and other weakest links that may initiate a fatigue crack should be taken into account synthetically.

scholarly journals Fatigue Properties of Welded Joints for JIS Aluminum Alloys.

1996 ◽  
Vol 62 (601) ◽  
pp. 1972-1978
Author(s):  
Hisashi HIRUKAWA ◽  
Saburo MATSUOKA ◽  
Etsuo TAKEUCHI ◽  
Satoshi NISHIJIMA
Keyword(s):  
Aluminum Alloys ◽  
Welded Joints ◽  
Fatigue Properties

scholarly journals Proportional monitoring of the acoustic emission in crypto-conditions

2011 ◽  
Vol 59 (5) ◽  
pp. 31-38 ◽  
Author(s):  
Petr Dostál ◽  
Michal Černý ◽  
Jaroslav Lev ◽  
David Varner
Keyword(s):  
Acoustic Emission ◽  
Aluminum Alloys ◽  
Real Time ◽  
Fatigue Cracks ◽  
Current Status ◽  
Fatigue Properties ◽  
Material Degradation ◽  
Emission Method ◽  
Important Benefit ◽  
Ae Signals

The work is aimed at studying corrosion and fatigue properties of aluminum alloys by means of acoustic emission (AE). During material degradation are acoustic events scanned and evaluated. The main objective of the article is a description of behavior of aluminum alloys degraded in specific conditions and critical degradation stages determination. The first part of the article describes controlled degradation of the material in the crypto–conditions. The acoustic emission method is used for process analyzing. This part contains the AE signals assessment and comparing aluminium alloy to steel. Then the specimens are loaded on high-cyclic loading apparatus for fatigue life monitoring. Also, the synergy of fatigue and corrosion processes is taken into account.The aim is the description of fatigue properties for aluminum alloys that have already been corrosion-degraded. Attention is also focused on the structure of fatigue cracks. The main part of the article is aimed at corrosion degradation of aluminium alloys researched in real time by means of AE. The most important benefit of AE detection/recording is that it provides information about the process in real time. Using this measurement system is possible to observe the current status of the machines/devices and to prevent serious accidents.

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