Assessment of creep behavior using a damage-coupled model for martensitic stainless steel

In this study, the Liu–Murakami (LM) creep damage-coupled model was considered to evaluate the creep properties of martensitic stainless steel. The degree of creep damage was examined at two temperatures (565 ℃ and 593 ℃) to assess mechanically and thermally activated processes. A series of high app...

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Autores principales:	Sungmin YOON, Yasuhiro KIMURA, Yuhki TOKU, Yang JU, Soojeong PARK, Yunhae KIM
Formato:	article
Lenguaje:	EN
Publicado:	The Japan Society of Mechanical Engineers 2021
Materias:	creep behavior liu-murakami creep damage model creep constants accelerated creep test martensitic stainless steel stress sensitivity temperature compensation Mechanical engineering and machinery TJ1-1570
Acceso en línea:	https://doaj.org/article/9a9bd229a79c4d0f86e12f4501f08b9b
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spelling	oai:doaj.org-article:9a9bd229a79c4d0f86e12f4501f08b9b2021-11-09T00:01:15ZAssessment of creep behavior using a damage-coupled model for martensitic stainless steel2187-974510.1299/mej.21-00178https://doaj.org/article/9a9bd229a79c4d0f86e12f4501f08b9b2021-08-01T00:00:00Zhttps://www.jstage.jst.go.jp/article/mej/8/5/8_21-00178/_pdf/-char/enhttps://doaj.org/toc/2187-9745In this study, the Liu–Murakami (LM) creep damage-coupled model was considered to evaluate the creep properties of martensitic stainless steel. The degree of creep damage was examined at two temperatures (565 ℃ and 593 ℃) to assess mechanically and thermally activated processes. A series of high applied stresses (applied stress/ultimate strength > 0.5) was considered for accelerated creep loadings. A full set of creep constants was determined by combining the Norton and LM models. Constitutive equations were used to quantitatively estimate experimental creep curves. The variation in creep constants was discussed based on stress sensitivity, such as stress triaxiality and applied stress, depending on the power of stress. The creep strain–time curves were successfully estimated. The comparison between the experimental and analytical results was in good agreement in the tertiary regime. In addition, the compensation of the two applied temperatures provides a supplementary explanation of the relationship between the ultimate strength and rupture time in terms of temperature sensitivity. The analytical results show that different applied stresses and temperatures could be compensated to characterize the creep behavior of the material. Thus, the creep strain–time and creep strain rate–certain rupture time curves were finally achieved. The analytical process in this study provides a laboratory-scale assessment of creep properties using the accelerated creep test and LM model.Sungmin YOONYasuhiro KIMURAYuhki TOKUYang JUSoojeong PARKYunhae KIMThe Japan Society of Mechanical Engineersarticlecreep behaviorliu-murakami creep damage modelcreep constantsaccelerated creep testmartensitic stainless steelstress sensitivitytemperature compensationMechanical engineering and machineryTJ1-1570ENMechanical Engineering Journal, Vol 8, Iss 5, Pp 21-00178-21-00178 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	creep behavior liu-murakami creep damage model creep constants accelerated creep test martensitic stainless steel stress sensitivity temperature compensation Mechanical engineering and machinery TJ1-1570
spellingShingle	creep behavior liu-murakami creep damage model creep constants accelerated creep test martensitic stainless steel stress sensitivity temperature compensation Mechanical engineering and machinery TJ1-1570 Sungmin YOON Yasuhiro KIMURA Yuhki TOKU Yang JU Soojeong PARK Yunhae KIM Assessment of creep behavior using a damage-coupled model for martensitic stainless steel
description	In this study, the Liu–Murakami (LM) creep damage-coupled model was considered to evaluate the creep properties of martensitic stainless steel. The degree of creep damage was examined at two temperatures (565 ℃ and 593 ℃) to assess mechanically and thermally activated processes. A series of high applied stresses (applied stress/ultimate strength > 0.5) was considered for accelerated creep loadings. A full set of creep constants was determined by combining the Norton and LM models. Constitutive equations were used to quantitatively estimate experimental creep curves. The variation in creep constants was discussed based on stress sensitivity, such as stress triaxiality and applied stress, depending on the power of stress. The creep strain–time curves were successfully estimated. The comparison between the experimental and analytical results was in good agreement in the tertiary regime. In addition, the compensation of the two applied temperatures provides a supplementary explanation of the relationship between the ultimate strength and rupture time in terms of temperature sensitivity. The analytical results show that different applied stresses and temperatures could be compensated to characterize the creep behavior of the material. Thus, the creep strain–time and creep strain rate–certain rupture time curves were finally achieved. The analytical process in this study provides a laboratory-scale assessment of creep properties using the accelerated creep test and LM model.
format	article
author	Sungmin YOON Yasuhiro KIMURA Yuhki TOKU Yang JU Soojeong PARK Yunhae KIM
author_facet	Sungmin YOON Yasuhiro KIMURA Yuhki TOKU Yang JU Soojeong PARK Yunhae KIM
author_sort	Sungmin YOON
title	Assessment of creep behavior using a damage-coupled model for martensitic stainless steel
title_short	Assessment of creep behavior using a damage-coupled model for martensitic stainless steel
title_full	Assessment of creep behavior using a damage-coupled model for martensitic stainless steel
title_fullStr	Assessment of creep behavior using a damage-coupled model for martensitic stainless steel
title_full_unstemmed	Assessment of creep behavior using a damage-coupled model for martensitic stainless steel
title_sort	assessment of creep behavior using a damage-coupled model for martensitic stainless steel
publisher	The Japan Society of Mechanical Engineers
publishDate	2021
url	https://doaj.org/article/9a9bd229a79c4d0f86e12f4501f08b9b
work_keys_str_mv	AT sungminyoon assessmentofcreepbehaviorusingadamagecoupledmodelformartensiticstainlesssteel AT yasuhirokimura assessmentofcreepbehaviorusingadamagecoupledmodelformartensiticstainlesssteel AT yuhkitoku assessmentofcreepbehaviorusingadamagecoupledmodelformartensiticstainlesssteel AT yangju assessmentofcreepbehaviorusingadamagecoupledmodelformartensiticstainlesssteel AT soojeongpark assessmentofcreepbehaviorusingadamagecoupledmodelformartensiticstainlesssteel AT yunhaekim assessmentofcreepbehaviorusingadamagecoupledmodelformartensiticstainlesssteel
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Assessment of creep behavior using a damage-coupled model for martensitic stainless steel

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