2017
DOI: 10.1299/mej.17-00266
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Effect of ferrite phase fraction on bainite transformation plasticity in double transformation

Abstract: Transformation plasticity significantly affects the stress distribution of a forging after heat-treatment. In this study, the transformation plasticity in a multi-phase transformation was measured experimentally. Two kinds of low-alloy steels were used: ASME SA508 and JIS SCM420. The materials were heat treated under different conditions to vary the phase fraction of ferrite. Then the transformation plastic strains of bainite were experimentally identified from the deviation between the stress-free total strai… Show more

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Cited by 2 publications
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“…At 800 °C, a mixture of brighter and darker grains appeared. According to the hardness test results, the darker grains had much higher hardness than the brighter grains, indicating that the brighter and darker grains are pro-eutectoid ferrite and martensite formed from γ, which is not inconsistent with the Ac 1 and Ac 3 temperatures of 731 and 826 °C, respectively 23) .…”
Section: Crystal Structure and Orientation Relationshipmentioning
confidence: 89%
“…At 800 °C, a mixture of brighter and darker grains appeared. According to the hardness test results, the darker grains had much higher hardness than the brighter grains, indicating that the brighter and darker grains are pro-eutectoid ferrite and martensite formed from γ, which is not inconsistent with the Ac 1 and Ac 3 temperatures of 731 and 826 °C, respectively 23) .…”
Section: Crystal Structure and Orientation Relationshipmentioning
confidence: 89%