Evaluation of fracture strength and material degradation for weldment of high temperature service steel using advanced small punch test

2004 ◽  
Vol 18 (9) ◽  
pp. 1604-1613 ◽  
Author(s):  
Dong-Hwan Lee
Keyword(s):  
High Temperature ◽  
Fracture Strength ◽  
Small Punch Test ◽  
Material Degradation ◽  
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.

High-temperature small punch test for mechanical characterization of a nickel-base super alloy

2014 ◽  
Vol 613 ◽  
pp. 259-263 ◽  
Author(s):  
S. Soltysiak ◽  
M. Selent ◽  
S. Roth ◽  
M. Abendroth ◽  
M. Hoffmann ◽  
...  
Keyword(s):  
High Temperature ◽  
Mechanical Characterization ◽  
Small Punch Test ◽  
Small Punch ◽  
Punch Test ◽  
Nickel Base ◽  
Super Alloy

scholarly journals Evaluation of High-Temperature Tensile Properties of Reduced Activation Ferritic Steels by Small Punch Test

2006 ◽  
Vol 70 (8) ◽  
pp. 642-645 ◽  
Author(s):  
Toshiya Nakata ◽  
Shin-ichi Komazaki ◽  
Motoki Nakajima ◽  
Yutaka Kohno ◽  
Hiroyasu Tanigawa ◽  
...  
Keyword(s):  
High Temperature ◽  
Tensile Properties ◽  
Ferritic Steels ◽  
Small Punch Test ◽  
Small Punch ◽  
Punch Test ◽  
High Temperature Tensile ◽  
High Temperature Tensile Properties

Fracture Strength Evaluation of Welded Joint in Steels by Using Small Punch Test

1991 ◽  
Vol 51-52 ◽  
pp. 435-440 ◽  
Author(s):  
D.Y. Lyu ◽  
H.S. You ◽  
H.D. Jung ◽  
Jae Kyoo Lim ◽  
Se Hi Chung
Keyword(s):  
Fracture Strength ◽  
Welded Joint ◽  
Small Punch Test ◽  
Strength Evaluation ◽  
Small Punch ◽  
Punch Test

High-temperature strength analysis of welded joint of RAFs by small punch test

2009 ◽  
Vol 386-388 ◽  
pp. 520-524 ◽  
Author(s):  
Taichiro Kato ◽  
Shin-ichi Komazaki ◽  
Yutaka Kohno ◽  
Hiroyasu Tanigawa ◽  
Akira Kohyama
Keyword(s):  
High Temperature ◽  
Welded Joint ◽  
Strength Analysis ◽  
High Temperature Strength ◽  
Small Punch Test ◽  
Small Punch ◽  
Punch Test

Small Punch Test for Ceramic Composites at Very High Temperature

1991 ◽  
Vol 51-52 ◽  
pp. 477-482 ◽  
Author(s):  
M. Saito ◽  
Toshiyuki Hashida ◽  
H. Takahashi
Keyword(s):  
High Temperature ◽  
Ceramic Composites ◽  
Small Punch Test ◽  
Small Punch ◽  
Punch Test ◽  
Very High

Fracture strength evaluation of welded steel joint by means of small punch test

KSME Journal ◽  
1992 ◽  
Vol 6 (2) ◽  
pp. 73-80
Author(s):  
Dae Yeong Lyu ◽  
Hyo Sun You ◽  
Jai Young Yoon ◽  
Se Hi Chung
Keyword(s):  
Fracture Strength ◽  
Small Punch Test ◽  
Welded Steel ◽  
Strength Evaluation ◽  
Small Punch ◽  
Steel Joint ◽  
Punch Test
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