scholarly journals Creep Property Evaluation of 12%Cr Ferritic Steel Welded Joint by Modified Small Punch Creep Test

2016 ◽  
Vol 65 (4) ◽  
pp. 306-312 ◽  
Author(s):  
Shin-ichi KOMAZAKI ◽  
Hiroshi UCHIMURA ◽  
Hayato YAMASHITA ◽  
Junichi KUSUMOTO ◽  
Yutaka TABUCHI
Keyword(s):  
Creep Test ◽  
Ferritic Steel ◽  
Welded Joint ◽  
Creep Property ◽  
Small Punch ◽  
Property Evaluation ◽  
Small Punch Creep Test

Creep property measurements of welded joint of reduced-activation ferritic steel by the small-punch creep test

2009 ◽  
Vol 510-511 ◽  
pp. 229-233 ◽  
Author(s):  
Shin-ichi Komazaki ◽  
Taichiro Kato ◽  
Yutaka Kohno ◽  
Hiroyasu Tanigawa
Keyword(s):  
Creep Test ◽  
Ferritic Steel ◽  
Welded Joint ◽  
Creep Property ◽  
Small Punch ◽  
Small Punch Creep Test

Creep Property Evaluation of Heat-Resistant Steels by Small Punch Creep Test

2007 ◽  
Vol 539-543 ◽  
pp. 4434-4439 ◽  
Author(s):  
Shinichi Komazaki ◽  
T. Nakata ◽  
Takayuki Sugimoto ◽  
Yutaka Kohno
Keyword(s):  
Creep Test ◽  
Ferritic Steel ◽  
Rupture Strength ◽  
Creep Property ◽  
Type Specimen ◽  
Standard Test ◽  
Creep Rupture ◽  
Ferritic Steels ◽  
Small Punch ◽  
Property Evaluation

The recently developed small punch (SP) creep test was applied to four different heatresistant ferritic steels, namely, two kinds of conventional ferritic steels which had been actually used in the high-temperature components for long periods and two advanced high chromium ferritic steels for fusion reactor materials to investigate the applicability of the SP creep test. The ratio of the load of SP creep test to the stress of standard uniaxial creep test was calculated so that both the creep rupture curves (load/stress versus Larson-Miller parameter curves) were overlapped to convert the results of SP creep test into those of standard test. As a result, the ratio was determined to be 2.4, irrespective of the kind of ferritic steel. This result indicates that the creep rupture strength of heat-resistance ferritic steels can be estimated using a miniaturized plate-type specimen and this conversion coefficient 2.4 independent of the kind of ferritic steel.

Evaluating of creep property of distinct zones in P92 steel welded joint by small punch creep test

2013 ◽  
Vol 47 ◽  
pp. 677-686 ◽  
Author(s):  
Lei Zhao ◽  
Hongyang Jing ◽  
Lianyong Xu ◽  
Yongdian Han ◽  
Junjie Xiu ◽  
...  
Keyword(s):  
Creep Test ◽  
Welded Joint ◽  
Creep Property ◽  
P92 Steel ◽  
Small Punch ◽  
Small Punch Creep Test

GS36 Creep Property Evaluation of 12%Cr Ferritic Steel Welded Joint by Modified SP Creep Test

2013 ◽  
Vol 2013 (0) ◽  
pp. _GS36-1_-_GS36-3_
Author(s):  
Hiroshi UCHIMURA ◽  
Hayato YAMASHITA ◽  
Shin-ichi KOMAZAKI ◽  
Akihiro KANAYA ◽  
Junichi KUSUMOTO ◽  
...  
Keyword(s):  
Creep Test ◽  
Ferritic Steel ◽  
Welded Joint ◽  
Creep Property ◽  
Property Evaluation

Creep property measurement of service-exposed SUS 316 austenitic stainless steel by the small-punch creep-testing technique

2002 ◽  
Vol 17 (8) ◽  
pp. 1945-1953 ◽  
Author(s):  
Maribel L. Saucedo-Muñoz ◽  
Shin-Ichi Komazaki ◽  
Toru Takahashi ◽  
Toshiyuki Hashida ◽  
Tetsuo Shoji
Keyword(s):  
Stainless Steel ◽  
Austenitic Stainless Steel ◽  
Creep Test ◽  
Creep Resistance ◽  
Creep Property ◽  
Creep Rupture ◽  
Secondary Creep ◽  
Small Punch ◽  
Uniaxial Creep ◽  
Small Punch Creep Test

The creep properties for SUS 316 HTB austenitic stainless steel were evaluated by using the small-punch creep test at 650 °C for loads of 234, 286, 338, 408, and 478 N and at 700 °C for loads of 199 and 234 N. The creep curves, determined by means of the small-punch creep test, were similar to those obtained from a conventional uniaxial creep test. That is, they exhibited clearly the three creep stages. The width of secondary creep stage and rupture time tr decreased with the increase in testing load level. The creep rupture strength for the service-exposed material was lower than that of the as-received material at high testing loads. However, the creep resistance behavior was opposite at relatively low load levels. This difference in creep resistance was explained on the basis of the difference in the creep deformation and microstructural evolution during tests. It was also found that the ratio between the load of small-punch creep test and the stress of uniaxial creep test was about 1 for having the same value of creep rupture life.

Identification of Creep Property by Small Punch Creep Test and Neural Networks

2014 ◽  
Vol 711 ◽  
pp. 227-230 ◽  
Author(s):  
Xiang Sai Feng ◽  
Kai Shu Guan
Keyword(s):  
Neural Networks ◽  
Finite Element ◽  
Creep Test ◽  
Creep Property ◽  
Finite Element Simulations ◽  
Creep Properties ◽  
Small Punch ◽  
Punch Test ◽  
The Neural Networks ◽  
Small Punch Creep Test

Present work describes an approach to identify creep properties of P91 with finite element simulations and neural networks. The small punch test was used to determine the material property under high temperature. Results showed that, the neural networks could be used to evaluate the creep property together with the small punch creep test and finite element simulations.

scholarly journals Local Creep Property Measurement of High Cr Ferritic Steel Welded Joint by Small Punch Test

2017 ◽  
Vol 66 (2) ◽  
pp. 101-107 ◽  
Author(s):  
Shin-ichi KOMAZAKI ◽  
Seiki NOGAWA ◽  
Hayato YAMASHITA ◽  
Yasushi HASEGAWA
Keyword(s):  
Ferritic Steel ◽  
Welded Joint ◽  
Creep Property ◽  
Small Punch Test ◽  
Small Punch ◽  
Punch Test ◽  
Property Measurement

scholarly journals Damage Evaluation of a Welded Joint in a Long-term Service-exposed Boiler by Using a Small Punch Creep Test

2007 ◽  
Vol 47 (8) ◽  
pp. 1228-1233 ◽  
Author(s):  
Shin-ichi Komazaki ◽  
Takayuki Sugimoto ◽  
Yasushi Hasegawa ◽  
Yutaka Kohno
Keyword(s):  
Creep Test ◽  
Welded Joint ◽  
Damage Evaluation ◽  
Small Punch ◽  
Small Punch Creep Test
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