Influence of C and N on Strain-Induced Martensite Formation in Fe-15Cr-7Mn-4Ni-0.5Si Austenitic Steel

In this study, the effect of interstitial contents on the mechanical properties and strain-induced martensite formation in an austenitic stainless steel was investigated. The mechanical properties of solution annealed Fe-15Cr-7Mn-4Ni-0.5Si-(0.01-0.2)N-(0.01-0.2)C concentrations in weight percent sta...

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Autores principales:	Caroline Quitzke, Qiuliang Huang, Horst Biermann, Olena Volkova, Marco Wendler
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	austenitic stainless steels interstitial elements in situ magnetic measurement strain-induced α′-martensite TRIP/TWIP effect dynamic strain aging Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85
Acceso en línea:	https://doaj.org/article/963c0b5d59dd4ee98f1a098bd99cfcd3
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spelling	oai:doaj.org-article:963c0b5d59dd4ee98f1a098bd99cfcd32021-11-11T18:04:32ZInfluence of C and N on Strain-Induced Martensite Formation in Fe-15Cr-7Mn-4Ni-0.5Si Austenitic Steel10.3390/ma142165021996-1944https://doaj.org/article/963c0b5d59dd4ee98f1a098bd99cfcd32021-10-01T00:00:00Zhttps://www.mdpi.com/1996-1944/14/21/6502https://doaj.org/toc/1996-1944In this study, the effect of interstitial contents on the mechanical properties and strain-induced martensite formation in an austenitic stainless steel was investigated. The mechanical properties of solution annealed Fe-15Cr-7Mn-4Ni-0.5Si-(0.01-0.2)N-(0.01-0.2)C concentrations in weight percent stainless steels were studied using room temperature tensile tests. All three alloys used in the present study have a sum content of C + N of about 0.2 wt.%. To verify the influence of C and N on deformation behavior, microstructural investigations are performed using light optical microscopy, scanning electron microscopy, and magnetic and hardness measurements. Moreover, strain-induced α′-martensite nucleation was characterized by scanning electron microscope using EBSD. In the present alloy system, carbon provides a stronger austenite stabilizing effect than nitrogen. Hence, the smallest amount of strain-induced α′-martensite was formed in the steel alloyed with 0.2 wt.% C. It also exhibited the optimal mechanical properties, including the highest ultimate tensile strength (1114 MPa), uniform elongation (63%), and total elongation (68%). Moreover, the interstitial content influences the occurrence of dynamic strain aging (DSA), which was only observed in the steel alloyed with carbon. With increasing C content, the triggering strain for DSA decreases, which can be confirmed by in situ magnetic measurements during tensile testing.Caroline QuitzkeQiuliang HuangHorst BiermannOlena VolkovaMarco WendlerMDPI AGarticleaustenitic stainless steelsinterstitial elementsin situ magnetic measurementstrain-induced α′-martensiteTRIP/TWIP effectdynamic strain agingTechnologyTElectrical engineering. Electronics. Nuclear engineeringTK1-9971Engineering (General). Civil engineering (General)TA1-2040MicroscopyQH201-278.5Descriptive and experimental mechanicsQC120-168.85ENMaterials, Vol 14, Iss 6502, p 6502 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	austenitic stainless steels interstitial elements in situ magnetic measurement strain-induced α′-martensite TRIP/TWIP effect dynamic strain aging Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85
spellingShingle	austenitic stainless steels interstitial elements in situ magnetic measurement strain-induced α′-martensite TRIP/TWIP effect dynamic strain aging Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85 Caroline Quitzke Qiuliang Huang Horst Biermann Olena Volkova Marco Wendler Influence of C and N on Strain-Induced Martensite Formation in Fe-15Cr-7Mn-4Ni-0.5Si Austenitic Steel
description	In this study, the effect of interstitial contents on the mechanical properties and strain-induced martensite formation in an austenitic stainless steel was investigated. The mechanical properties of solution annealed Fe-15Cr-7Mn-4Ni-0.5Si-(0.01-0.2)N-(0.01-0.2)C concentrations in weight percent stainless steels were studied using room temperature tensile tests. All three alloys used in the present study have a sum content of C + N of about 0.2 wt.%. To verify the influence of C and N on deformation behavior, microstructural investigations are performed using light optical microscopy, scanning electron microscopy, and magnetic and hardness measurements. Moreover, strain-induced α′-martensite nucleation was characterized by scanning electron microscope using EBSD. In the present alloy system, carbon provides a stronger austenite stabilizing effect than nitrogen. Hence, the smallest amount of strain-induced α′-martensite was formed in the steel alloyed with 0.2 wt.% C. It also exhibited the optimal mechanical properties, including the highest ultimate tensile strength (1114 MPa), uniform elongation (63%), and total elongation (68%). Moreover, the interstitial content influences the occurrence of dynamic strain aging (DSA), which was only observed in the steel alloyed with carbon. With increasing C content, the triggering strain for DSA decreases, which can be confirmed by in situ magnetic measurements during tensile testing.
format	article
author	Caroline Quitzke Qiuliang Huang Horst Biermann Olena Volkova Marco Wendler
author_facet	Caroline Quitzke Qiuliang Huang Horst Biermann Olena Volkova Marco Wendler
author_sort	Caroline Quitzke
title	Influence of C and N on Strain-Induced Martensite Formation in Fe-15Cr-7Mn-4Ni-0.5Si Austenitic Steel
title_short	Influence of C and N on Strain-Induced Martensite Formation in Fe-15Cr-7Mn-4Ni-0.5Si Austenitic Steel
title_full	Influence of C and N on Strain-Induced Martensite Formation in Fe-15Cr-7Mn-4Ni-0.5Si Austenitic Steel
title_fullStr	Influence of C and N on Strain-Induced Martensite Formation in Fe-15Cr-7Mn-4Ni-0.5Si Austenitic Steel
title_full_unstemmed	Influence of C and N on Strain-Induced Martensite Formation in Fe-15Cr-7Mn-4Ni-0.5Si Austenitic Steel
title_sort	influence of c and n on strain-induced martensite formation in fe-15cr-7mn-4ni-0.5si austenitic steel
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/963c0b5d59dd4ee98f1a098bd99cfcd3
work_keys_str_mv	AT carolinequitzke influenceofcandnonstraininducedmartensiteformationinfe15cr7mn4ni05siausteniticsteel AT qiulianghuang influenceofcandnonstraininducedmartensiteformationinfe15cr7mn4ni05siausteniticsteel AT horstbiermann influenceofcandnonstraininducedmartensiteformationinfe15cr7mn4ni05siausteniticsteel AT olenavolkova influenceofcandnonstraininducedmartensiteformationinfe15cr7mn4ni05siausteniticsteel AT marcowendler influenceofcandnonstraininducedmartensiteformationinfe15cr7mn4ni05siausteniticsteel
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Influence of C and N on Strain-Induced Martensite Formation in Fe-15Cr-7Mn-4Ni-0.5Si Austenitic Steel

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