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Title of Journal: J Mech Sci Technol

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Abbravation: Journal of Mechanical Science and Technology

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Korean Society of Mechanical Engineers

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DOI

10.1016/0304-5102(84)80056-5

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1976-3824

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Effects of microstructure on material properties o

Authors: Mayu Muramatsu Takayuki Suzuki Yuji Nakasone
Publish Date: 2015/01/15
Volume: 29, Issue: 1, Pages: 121-129
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Abstract

The creepfatigue properties of modified 9Cr1Mo steel were studied to elucidate the effects of the microstructure on specimens deformed by fatigue and creepfatigue via stress holding for 30 min at 550°C First creepfatigue behaviors up to 78 nominal strains were obtained with respect to the deformation conditions Next the micro Vickers hardness values were determined to measure the creepfatigue properties of the deformed materials Electron backscatter diffraction EBSD and transmission electron microscopy TEM were used to determine the grain diameters and grain average misorientations GAMs and distributions of dislocations and precipitates respectively These observations explained the creepfatigue properties of the deformed specimens The differences in the properties of materials subjected to fatigue and creepfatigue are discussed both macroscopically and microscopicallyMayu Muramatsu received a PhD from Keio University in 2012 Dr Muramatsu worked in National Institute of Advanced Industrial Science and Technology AIST from 2012 to 2014 as a research scientist She is currently working for Tohoku University since 2014 as an Assistant Professor

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