Estimation of Anisotropy of Creep Properties in Al and Mg Alloys by Means of Small Punch Test

2017 ◽  
Vol 734 ◽  
pp. 137-143
Author(s):  
Ferdinand Dobeš ◽  
Petr Dymáček
Keyword(s):  
Elevated Temperatures ◽  
Hot Extrusion ◽  
Orientation Dependence ◽  
Small Punch Test ◽  
Creep Properties ◽  
Small Punch ◽  
Punch Test ◽  
Angular Pressing ◽  
Planar Orientation

Small punch test was used to evaluate the properties of light alloys in various directions. Three different materials were studied: (i) magnesium alloy WE54 prepared by a powder metallurgical route with final hot extrusion, (ii) aluminium alloy reinforced with 20 vol. % of Saffil fibres with planar orientation, and (iii) Al-Al4C3 composite prepared by mechanical alloying and subjected to equal channel angular pressing as a final step. Tests were performed under constant force at elevated temperatures. The observed orientation dependence of creep properties is strongly material dependent. The results confirm the feasibility of the small punch test for determination of anisotropy of mechanical properties.

scholarly journals Determination of creep properties from small punch test using experimental correlation

2018 ◽  
Vol 1 (S1) ◽  
pp. 17
Author(s):  
P. Dymáček ◽  
F. Dobeš ◽  
Y. Li ◽  
S. Holmström ◽  
P. Stevens
Keyword(s):  
Small Punch Test ◽  
Creep Properties ◽  
Small Punch ◽  
Punch Test ◽  
Experimental Correlation

Determination of Creep Properties From Small Punch Test

2008 ◽  
Author(s):  
Yingzhi Li ◽  
Roman Sˇturm
Keyword(s):  
Power Plants ◽  
Research Work ◽  
Small Punch Test ◽  
Creep Properties ◽  
Small Punch ◽  
Code Of Practice ◽  
Punch Test ◽  
Starting Point ◽  
European Code

The small punch test is one of the techniques, which can directly assess the current material properties of components on situ. The main advantages of this method are that only small amount of material is needed and no repair is required afterwards. In addition, the test itself is rather simple to perform. Since early 1980’s, the technique has been developed and applied to nuclear reactors, electric power plants for safety assessment. European researchers have carried out the pioneer work on small punch testing at the creep region. Recently the European Code of Practice documents are available for both high and low temperature properties, which summarizes the international experiences in last 20 years and provides a guide line to perform small punch test for metallic materials. This paper gives an overview of the research work on determination of creep properties from small punch test. Verification is performed by comparison of creep properties derived by small punch test and uni-axial tests. An agreement is found and shows that small punch test is able to predict reasonable creep properties of materials. Considerations how to improve the approach are also addressed. Further work is needed as available tests are still limited. This paper makes a starting point that others can improve further.

Application of Miniature Small Punch Test Specimen in Determination of Tensile Properties

2015 ◽  
pp. 1-8 ◽  
Author(s):  
R. Kopriva ◽  
M. Brumovsky ◽  
M. Kytka ◽  
M. Lasan ◽  
J. Siegl ◽  
...  
Keyword(s):  
Tensile Properties ◽  
Test Specimen ◽  
Small Punch Test ◽  
Small Punch ◽  
Punch Test

Determination of creep property of 1.25Cr0.5Mo pearlitic steels by small punch test

2013 ◽  
Vol 28 ◽  
pp. 215-221 ◽  
Author(s):  
Feng Hou ◽  
Hong Xu ◽  
Yucheng Wang ◽  
Li Zhang
Keyword(s):  
Creep Property ◽  
Small Punch Test ◽  
Small Punch ◽  
Punch Test

Determination of Material Fracture Toughness by Circular Pre-Cracked Small Punch Test Specimens

2019 ◽  
Vol 795 ◽  
pp. 165-171
Author(s):  
Wu Lin Wang ◽  
Du Wei Wang ◽  
Kai Shu Guan
Keyword(s):  
Fracture Toughness ◽  
Empirical Correlation ◽  
Fracture Toughness Test ◽  
J Integral ◽  
Small Punch Test ◽  
Small Punch ◽  
Punch Test ◽  
Determination Procedure ◽  
Material Fracture

Fracture toughness empirical correlation between SPT(Small Punch Test) with non-crack sample and standard fracture toughness test has been established in recent years. In order to compensate the imperfection of empirical correlation, such as absence theoretical basis, poor repeatability and universality, in this paper, an O-type pre-cracked sample was adopted to evaluate fracture toughness. The mechanical model of the sample is in compliance with plane strain condition in the direction of crack propagation. In this paper a determination procedure was studied and established, and the J-integral of steel Q345R was calculated using the procedure.

scholarly journals Determination of J-initiation toughness using pre-cracked small punch test specimens

2019 ◽  
Vol 14 ◽  
pp. 529-536 ◽  
Author(s):  
Taslim D. Shikalgar ◽  
B.K. Dutta ◽  
J. Chattopadhyay
Keyword(s):  
Initiation Toughness ◽  
Small Punch Test ◽  
Small Punch ◽  
Punch Test

scholarly journals Determination of Strength and Fracture Toughness of Small Ceramic Discs Using the Small Punch Test and the Ball-on-three-balls Test

2014 ◽  
Vol 3 ◽  
pp. 961-966 ◽  
Author(s):  
Stefan Rasche ◽  
Stefan Strobl ◽  
Meinhard Kuna ◽  
Raul Bermejo ◽  
Tanja Lube
Keyword(s):  
Fracture Toughness ◽  
Small Punch Test ◽  
Small Punch ◽  
Punch Test
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