Corrosion Resistance of a High Purity Fe–50 mass% Cr Alloy

Yokota, Takeshi; Satoh, Susumu; Kato, Yusuke; Abiko, K.

doi:10.1002/(sici)1521-396x(199806)167:2<495::aid-pssa495>3.0.co;2-z

Cited by 9 publications

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“…The properties of various alloys are affected by the presence of impurities such as carbon and nitrogen, and it has been found that the toughness of Fe-30mass%Cr alloy is degraded by these impurities (Fukuda et al, 1990). On the other hand, a highly purified Fe-50mass%Cr alloy have been reported to exhibit good ductility (Abiko, 1995), high strength and corrosion resistance Takaku et al, 1995;Yokota et al, 1998). The alloy is also found to deform by dislocation slip and twinning (Kako et al, 1998).…”

Section: Introductionmentioning

confidence: 99%

Deformation Behavior of Corrosion-Resistant Fe-Cr Alloy

et al. 2016

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Iron containing a high amount of chromium is known to be inferior to ductility due to σ phase formation so that it is generally difficult to apply the plastic deformation process although the alloy possesses a superior characteristics of an excellent corrosion resistance. In this study, Fe-50mass%Cr alloy was melted using high purity powder and the deformation behavior has been investigated by cold rolling and tensile test. The tensile test yielded that the alloy revealed a serration at an early stage of tensile deformation and then the serrated flow vanished to change to a normal work hardening flow at the later stage. The former was governed by twin formation process, the latter by dislocation multiplication one, bringing about a high ductility of 20% or over. The reduction ratio in cold rolling was attained as high as 90%, thus the high corrosion-resistant alloy is able to possess a high ductility.

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Section: Introductionmentioning

confidence: 99%

Deformation Behavior of Corrosion-Resistant Fe-Cr Alloy

et al. 2016

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Properties of a High-Purity Fe–mass% Cr Alloy

Abiko¹,

Kato²

1998

phys. stat. sol. (a)

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Since Fe–Cr alloys containing more than 30 mass% chromium are potentially useful for many industrial applications, the properties of a high‐purity Fe–50 mass% Cr alloy were investigated to see whether the purification improves properties. Both mechanical and physical properties were investigated: mechanical properties such as tensile properties and deformability, and physical properties such as density, Young's modulus, thermal expansion rate, specific heat, thermal conductivity, heat transfer rate, specific electrical resistivity, and magnetic properties. It is concluded that a high‐purity Fe–50 mass% alloy is deformable, while maintaining high strength, at temperatures between 293 and 1523 K. Also, it possesses several desiable physical properties for high‐temperature services such as low thermal expansion coefficient and high thermal conductivity, compared to type 304 stainless steel.

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Effects of Radiation on Tensile Properties and Damage: Microstructures in High-Purity Fe-(9-70)Cr Alloys

Wakai

Hishinuma

Asahina

et al. 2002

phys. stat. sol. (a)

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Tensile properties of high-purity Fe-50Cr and Fe-50Cr-8W alloys irradiated by neutrons have been investigated. The behavior of precipitate formation on dislocation loops in high-purity Fe-(9-70)Cr alloys has been examined during 1 MeV electron irradiation in a high voltage electron microscope. The neutron irradiation was performed at 673, 773 and 873 K in the Modified Japan Research Reactor-3 (JRR-3M) to about 0.4 dpa. In the Fe-50Cr and Fe-50Cr-8W alloys irradiated at 673 K, no elongation was observed in the test performed at 673 K. The elongations were observed to recover in the tensile test at 873 K. They also recovered largely after a heat treatment at 873 K for 10 h. However, heat treatment at 873 K for 10 h hardly improved the ductility for the Fe-50Cr alloy irradiated at 873 K. The defect clusters formed at 873 K by the irradiation were relatively stable. Moiré fringe contrast due to the precipitate formation on dislocation loops was observed in the Fe-(9-70)Cr alloys irradiated by electrons at temperatures lower than about 773 K. The precipitates were identified as a 0 -phase in the Fe-(9-30)Cr alloys, but as aphase in the Fe-70Cr alloy. The loops formed in Fe-(9-70)Cr alloys were of two types: either on {100} planes with Burgers vector b ¼ ah100i or on {111} planes with b ¼ ða=2Þh111i. Their number density decreased with irradiation temperature.

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Corrosion Resistance of a High Purity Fe–50 mass% Cr Alloy

Cited by 9 publications

References 1 publication

Deformation Behavior of Corrosion-Resistant Fe-Cr Alloy

Deformation Behavior of Corrosion-Resistant Fe-Cr Alloy

Properties of a High-Purity Fe–mass% Cr Alloy

Effects of Radiation on Tensile Properties and Damage: Microstructures in High-Purity Fe-(9-70)Cr Alloys

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