Effect of Aging on the Tensile Properties of High-Purity Fe-50Cr Alloys
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- Kako Kenji
- Central Research Institute of Electric Power Industry
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- Takaki Seiichi
- Institute for Materials Research, Tohoku University
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- Abiko Kenji
- Institute for Materials Research, Tohoku University
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Abstract
The effects of strain rate and aging on the tensile property of high-purity Fe–50 mass%Cr and 166 mass ppm carbon-doped Fe–50 mass%Cr alloys were investigated by tensile tests and microstructural observations. The serration occurring by dynamic strain aging on the stress-strain curves disappears at the strain rate below 4.2×10−5 s−1 and above 1.7×10−2 s−1 at 773 K in a high-purity Fe–50 mass%Cr alloy with the grain size of 29 \\micron. The deformation twinning in a high-purity Fe–50 mass%Cr alloy with the grain size of 108 \\micron at 773 K occurs at the same stress of 480 MPa, independent of strain rate. The pre-strained specimen of high-purity Fe–50 mass%Cr alloy shows static strain aging after aging at 573 K . The aging treatment at 773 K causes the precipitation of carbides and thereby the formation of deformation twins in tensile tests. In a carbon-doped high-purity Fe–50 mass%Cr alloy, the heat treatment for precipitating carbides on grain-boundaries restrains the formation of deformation twins at 773 K.
Journal
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- MATERIALS TRANSACTIONS
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MATERIALS TRANSACTIONS 43 (2), 147-154, 2002
The Japan Institute of Metals and Materials
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Details 詳細情報について
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- CRID
- 1390282679223957504
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- NII Article ID
- 130004451763
- 10012320716
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- NII Book ID
- AA1151294X
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- COI
- 1:CAS:528:DC%2BD38XivVCjsbs%3D
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- ISSN
- 13475320
- 13459678
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- NDL BIB ID
- 6085573
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- Text Lang
- en
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed