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Fracture Toughness of Z3CN20.09M Cast Stainless Steel with Long-Term Thermal Aging.

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Title: Fracture Toughness of Z3CN20.09M Cast Stainless Steel with Long-Term Thermal Aging.
Authors: Yu, Weiwei, Yu, Dunji1, Gao, Hongbo2, Xue, Fei2, Chen, Xu1 xchen@tju.edu.cn
Source: Journal of Materials Engineering & Performance. Sep2017, Vol. 26 Issue 9, p4442-4449. 8p.
Subjects: Fracture toughness, Duplex stainless steel, Deterioration of materials, Notched bar testing, R-curves, Thermal properties
Abstract: Accelerated thermal aging tests were performed at 400 °C for nearly 18,000 h on Z3CN20.09M cast stainless steel which was used for primary coolant pipes of nuclear power plants. A series of Charpy impact tests were conducted on Z3CN20.09M after different long-term thermal aging time. The test results indicated that the Charpy impact energy of Z3CN20.09M cast stainless steel decreased rapidly at an early stage and then almost saturated after thermal aging of 10,000 h. Furthermore, J-resistance curves were measured for CT specimens of longitudinal and circumferential pipe orientations. It showed that there was no obvious difference in the fracture characteristics of Z3CN20.09M in different sampling directions. In addition, the observed stretch zone width (SZW) revealed that the value of initiation fracture toughness J was significantly lower than that of fracture toughness J , indicating a low actual crack initiation energy due to long-term thermal aging. [ABSTRACT FROM AUTHOR]
Copyright of Journal of Materials Engineering & Performance is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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DbLabel: Engineering Source
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PubType: Academic Journal
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  Data: Fracture Toughness of Z3CN20.09M Cast Stainless Steel with Long-Term Thermal Aging.
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  Data: <searchLink fieldCode="AR" term="%22Yu%2C+Weiwei%22">Yu, Weiwei</searchLink><br /><searchLink fieldCode="AR" term="%22Yu%2C+Dunji%22">Yu, Dunji</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Gao%2C+Hongbo%22">Gao, Hongbo</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Xue%2C+Fei%22">Xue, Fei</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Chen%2C+Xu%22">Chen, Xu</searchLink><relatesTo>1</relatesTo><i> xchen@tju.edu.cn</i>
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  Data: <searchLink fieldCode="DE" term="%22Fracture+toughness%22">Fracture toughness</searchLink><br /><searchLink fieldCode="DE" term="%22Duplex+stainless+steel%22">Duplex stainless steel</searchLink><br /><searchLink fieldCode="DE" term="%22Deterioration+of+materials%22">Deterioration of materials</searchLink><br /><searchLink fieldCode="DE" term="%22Notched+bar+testing%22">Notched bar testing</searchLink><br /><searchLink fieldCode="DE" term="%22R-curves%22">R-curves</searchLink><br /><searchLink fieldCode="DE" term="%22Thermal+properties%22">Thermal properties</searchLink>
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  Label: Abstract
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  Data: Accelerated thermal aging tests were performed at 400 °C for nearly 18,000 h on Z3CN20.09M cast stainless steel which was used for primary coolant pipes of nuclear power plants. A series of Charpy impact tests were conducted on Z3CN20.09M after different long-term thermal aging time. The test results indicated that the Charpy impact energy of Z3CN20.09M cast stainless steel decreased rapidly at an early stage and then almost saturated after thermal aging of 10,000 h. Furthermore, J-resistance curves were measured for CT specimens of longitudinal and circumferential pipe orientations. It showed that there was no obvious difference in the fracture characteristics of Z3CN20.09M in different sampling directions. In addition, the observed stretch zone width (SZW) revealed that the value of initiation fracture toughness J was significantly lower than that of fracture toughness J , indicating a low actual crack initiation energy due to long-term thermal aging. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
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  Data: <i>Copyright of Journal of Materials Engineering & Performance is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1007/s11665-017-2882-5
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      – Code: eng
        Text: English
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        PageCount: 8
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      – SubjectFull: Fracture toughness
        Type: general
      – SubjectFull: Duplex stainless steel
        Type: general
      – SubjectFull: Deterioration of materials
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      – SubjectFull: Notched bar testing
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              Text: Sep2017
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