scholarly journals Changes in Small Punch Test Characteristic of High Chromium Steel for Steam Turbine due to Aging and Creep

2021 ◽  
Vol 70 (2) ◽  
pp. 133-139
Author(s):  
Yasuaki WATANABE ◽  
Mitsuo YAMASHITA ◽  
Sakae IZUMI ◽  
Shin-ichi KOMAZAKI ◽  
Koki MORI
Keyword(s):  
Steam Turbine ◽  
Chromium Steel ◽  
Small Punch Test ◽  
High Chromium ◽  
Small Punch ◽  
Test Characteristic ◽  
Punch Test

Prüfung duktiler Werkstoffe mit dem Small-Punch-Test

2005 ◽  
Vol 47 (1-2) ◽  
pp. 45-54 ◽  
Author(s):  
Meinhard Kuna ◽  
Martin Abendroth
Keyword(s):  
Small Punch Test ◽  
Small Punch ◽  
Punch Test

Predicting ductile fracture of cracked pipes using small punch test data

2021 ◽  
Vol 87 ◽  
pp. 104211
Author(s):  
Jong-Min Lee ◽  
Jin-Ha Hwang ◽  
Yun-Jae Kim ◽  
Jin-Weon Kim
Keyword(s):  
Ductile Fracture ◽  
Test Data ◽  
Small Punch Test ◽  
Small Punch ◽  
Punch Test

Estimating damage parameters of a CuCrZr alloy subjected to two varying heat treatments using small punch test

2021 ◽  
Vol 557 ◽  
pp. 153263
Author(s):  
V.D. Vijayanand ◽  
M. Mokhtarishirazabad ◽  
Y. Wang ◽  
M. Gorley ◽  
D.M. Knowles ◽  
...  
Keyword(s):  
Heat Treatments ◽  
Small Punch Test ◽  
Small Punch ◽  
Punch Test

Development of Impact Small Punch Test for Investigating Energy Absorption

2021 ◽  
pp. 106675
Author(s):  
Bo Cao ◽  
Shiguma Yoshida ◽  
Takeshi Iwamoto ◽  
Hang Thi Pham
Keyword(s):  
Energy Absorption ◽  
Small Punch Test ◽  
Small Punch ◽  
Punch Test

Application of Small Punch Test to Evaluate Tensile Properties of SA213T22 Grade Boiler Steel

2015 ◽  
Vol 830-831 ◽  
pp. 191-194
Author(s):  
M. Venkateswara Rao
Keyword(s):  
Mechanical Properties ◽  
High Temperature ◽  
Tensile Properties ◽  
Test Methods ◽  
Uniaxial Tensile ◽  
Test Results ◽  
Small Punch Test ◽  
Small Punch ◽  
Punch Test ◽  
Aging Phenomena

Conventional tensile test methods are used for service exposed high temperature boiler tubes to evaluate the deterioration in mechanical properties such as tensile strength, yield strength and percentage elongation. The mechanical properties are required to be evaluated periodically as the boiler components undergo material degradation due to aging phenomena. The aging phenomena occurs due to continuous exposure of tubes to high temperature & pressure steam prevailing inside the tubes and high temperature exposure to corrosive combustible gases from the external surfaces within the boiler.A recent developed new technique called small punch testing has been used to evaluate the tensile properties of SA 213T22 grade steel predominantly exists in super-heater and re-heater sections of boiler. The small punch tests have been carried out on the miniature disk shaped specimens of diameter of 8.0 mm and 0.5 mm thickness extracted from both the new and service exposed tubes. Conventional uniaxial tensile tests on standard specimens from the same tube material have also been performed for comparison. The service exposed tubes showed considerable loss in mechanical properties in both the conventional and small punch test results. Correlations of tensile properties have been obtained based on the comparative analysis of both small punch and uniaxial tensile test results. Further, the study showed that an appropriate empirical relation could be generated for new and service exposed materials between both the techniques. Conventional test methods require large quantity of material removal for test samples from in-service components whereas small punch test method needs only a miniature sample extraction. This small punch test technique could also be extended to evaluate the thicker section boiler components such as pipelines and headers in the boiler as a part of remaining life assessment study. Also this technique could be a useful tool to any metallic component where large quantity of sample removal may be difficult or may not be feasible.

Sign in / Sign up

Export Citation Format

Share Document