Application of Small Specimen Test Technique to Evaluate Creep Behavior of Austenitic Stainless Steel
| Autor: | Diancheng Geng, Zhenfeng Tong, Wentuo Han, Wen Yang, Zhao Yingchao, Yu Bintao, Chenlong Wang |
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| Rok vydání: | 2019 |
| Předmět: |
Materials science
02 engineering and technology precipitation engineering.material lcsh:Technology 01 natural sciences Article creep Stress (mechanics) small specimen test techniques 0103 physical sciences General Materials Science Austenitic stainless steel Composite material lcsh:Microscopy austenitic steel lcsh:QC120-168.85 010302 applied physics Austenite lcsh:QH201-278.5 lcsh:T Precipitation (chemistry) fast reactor 021001 nanoscience & nanotechnology Microstructure Creep lcsh:TA1-2040 Small specimen engineering lcsh:Descriptive and experimental mechanics lcsh:Electrical engineering. Electronics. Nuclear engineering Deformation (engineering) lcsh:Engineering (General). Civil engineering (General) 0210 nano-technology lcsh:TK1-9971 |
| Zdroj: | Materials Volume 12 Issue 16 Materials, Vol 12, Iss 16, p 2541 (2019) |
| ISSN: | 1996-1944 |
| DOI: | 10.3390/ma12162541 |
| Popis: | Small specimen test techniques (SSTT) are highly demanded in the nuclear field. In the present work, SSTT was applied to the creep tests of 15-15Ti austenitic steel. The creep behaviors of specimens with miniaturized and standard sizes were contrastively studied. The feasibility of SSTT is verified after tests under more than 20 creep conditions. The results that were obtained by miniaturized specimens are relatively conservative and they can be securely applied. The stress exponent and apparent activation creep energy of 15-15Ti are calculated as 7.7 and 428 kJ/mol, respectively. The creep microstructures are characterized by the evolution of dislocations, deformation twins, and precipitates. |
| Databáze: | OpenAIRE |
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