Thermal Stability of Nanocrystalline Structure In X37CrMoV5-l Steel
The aim of the study was to investigate the thermal stability of the nanostructure produced in X37CrMoV5-1 tool steel by austempering heat treatment consisted of austenitization and isothermal quenching at the range of the bainitic transformation. The nanostructure was composed of bainitic ferrite p...
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Polish Academy of Sciences
2015-04-01
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doaj-1544e7d533ae4b3e94f31dd5d4d68eac2020-11-25T03:13:24ZengPolish Academy of SciencesArchives of Metallurgy and Materials2300-19092015-04-0160151151610.1515/amm-2015-0082amm-2015-0082Thermal Stability of Nanocrystalline Structure In X37CrMoV5-l SteelSkołek E.0Marciniak S.1Świątnicki W.A.2WARSAW UNIVERSITY OF TECHNOLOGY, FACULTY OF MATERIALS SCIENCE AND ENGINEERING, 141 WOŁOSKA STR., 02-507 WARSAW, POLANDWARSAW UNIVERSITY OF TECHNOLOGY, FACULTY OF MATERIALS SCIENCE AND ENGINEERING, 141 WOŁOSKA STR., 02-507 WARSAW, POLANDWARSAW UNIVERSITY OF TECHNOLOGY, FACULTY OF MATERIALS SCIENCE AND ENGINEERING, 141 WOŁOSKA STR., 02-507 WARSAW, POLANDThe aim of the study was to investigate the thermal stability of the nanostructure produced in X37CrMoV5-1 tool steel by austempering heat treatment consisted of austenitization and isothermal quenching at the range of the bainitic transformation. The nanostructure was composed of bainitic ferrite plates of nanometric thickness separated by thin layers of retained austenite. It was revealed, that the annealing at the temperature higher than temperature of austempering led to formation of cementite precipitations. At the initial stage of annealing cementite precipitations occurred in the interfaces between ferritic bainite and austenite. With increasing temperature of annealing, the volume fraction and size of cementite precipitations also increased. Simultaneously fine spherical Fe7C3 carbides appeared. At the highest annealing temperature the large, spherical Fe7C3 carbides as well as cementite precipitates inside the ferrite grains were observed. Moreover the volume fraction of bainitic ferrite and of freshly formed martensite increased in steel as a result of retained austenite transformation during cooling down to room temperature.http://www.degruyter.com/view/j/amm.2015.60.issue-1/amm-2015-0082/amm-2015-0082.xml?format=INTnanocrystalline structurecarbide free bainitetool steelthermal stabilityTEM |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Skołek E. Marciniak S. Świątnicki W.A. |
spellingShingle |
Skołek E. Marciniak S. Świątnicki W.A. Thermal Stability of Nanocrystalline Structure In X37CrMoV5-l Steel Archives of Metallurgy and Materials nanocrystalline structure carbide free bainite tool steel thermal stability TEM |
author_facet |
Skołek E. Marciniak S. Świątnicki W.A. |
author_sort |
Skołek E. |
title |
Thermal Stability of Nanocrystalline Structure In X37CrMoV5-l Steel |
title_short |
Thermal Stability of Nanocrystalline Structure In X37CrMoV5-l Steel |
title_full |
Thermal Stability of Nanocrystalline Structure In X37CrMoV5-l Steel |
title_fullStr |
Thermal Stability of Nanocrystalline Structure In X37CrMoV5-l Steel |
title_full_unstemmed |
Thermal Stability of Nanocrystalline Structure In X37CrMoV5-l Steel |
title_sort |
thermal stability of nanocrystalline structure in x37crmov5-l steel |
publisher |
Polish Academy of Sciences |
series |
Archives of Metallurgy and Materials |
issn |
2300-1909 |
publishDate |
2015-04-01 |
description |
The aim of the study was to investigate the thermal stability of the nanostructure produced in X37CrMoV5-1 tool steel by austempering heat treatment consisted of austenitization and isothermal quenching at the range of the bainitic transformation. The nanostructure was composed of bainitic ferrite plates of nanometric thickness separated by thin layers of retained austenite. It was revealed, that the annealing at the temperature higher than temperature of austempering led to formation of cementite precipitations. At the initial stage of annealing cementite precipitations occurred in the interfaces between ferritic bainite and austenite. With increasing temperature of annealing, the volume fraction and size of cementite precipitations also increased. Simultaneously fine spherical Fe7C3 carbides appeared. At the highest annealing temperature the large, spherical Fe7C3 carbides as well as cementite precipitates inside the ferrite grains were observed. Moreover the volume fraction of bainitic ferrite and of freshly formed martensite increased in steel as a result of retained austenite transformation during cooling down to room temperature. |
topic |
nanocrystalline structure carbide free bainite tool steel thermal stability TEM |
url |
http://www.degruyter.com/view/j/amm.2015.60.issue-1/amm-2015-0082/amm-2015-0082.xml?format=INT |
work_keys_str_mv |
AT skołeke thermalstabilityofnanocrystallinestructureinx37crmov5lsteel AT marciniaks thermalstabilityofnanocrystallinestructureinx37crmov5lsteel AT swiatnickiwa thermalstabilityofnanocrystallinestructureinx37crmov5lsteel |
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1724646981287018496 |