Hydrogen Absorption and Desorption Behavior on Aluminum-Coated Hot-Stamped Boron Steel during Hot Press Forming and Automotive Manufacturing Processes

Our study mainly focused on diffusible hydrogen in aluminum–silicon-coated hot-stamped boron steel during a hot press forming process and in pre-treatment sequential lines of the automotive manufacturing process using a thermal desorption spectroscopy (TDS) technique. First, in the hot stamping proc...

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Autores principales:	Hye-Jin Kim, Hyun-Yeong Jung, Seung-Pill Jung, Ji-Hee Son, Joo-Sik Hyun, Ju-Sung Kim
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	hot-stamped boron steel thermal desorption spectroscopy diffusible hydrogen 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/5f61adae51004471b7ba4d68037dec2d
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spelling	oai:doaj.org-article:5f61adae51004471b7ba4d68037dec2d2021-11-11T18:13:11ZHydrogen Absorption and Desorption Behavior on Aluminum-Coated Hot-Stamped Boron Steel during Hot Press Forming and Automotive Manufacturing Processes10.3390/ma142167301996-1944https://doaj.org/article/5f61adae51004471b7ba4d68037dec2d2021-11-01T00:00:00Zhttps://www.mdpi.com/1996-1944/14/21/6730https://doaj.org/toc/1996-1944Our study mainly focused on diffusible hydrogen in aluminum–silicon-coated hot-stamped boron steel during a hot press forming process and in pre-treatment sequential lines of the automotive manufacturing process using a thermal desorption spectroscopy (TDS) technique. First, in the hot stamping procedure, as the soaking time increased in the heating furnace at a specific dew point when austenitizing, a high concentration of diffusible hydrogen was absorbed into the hot-stamped boron steel. Based on the TDS analysis of hydrogen absorbed from hot stamping, the activation energy value of hydrogen trapping in 1.8 GPa grade steel is lower than that of 1.5 GPa grade steel. This means that diffusible hydrogen can be more easily diffused into defective sites of the microstructure at a higher level of the tensile strength grade. Second, in sequential pre-treatment lines of the automotive manufacturing process, additional hydrogen did not flow into the surface, and an electro-deposition process, including a baking procedure, was effective in removing diffusible hydrogen, which was similar to the residual hydrogen of the as-received state (i.e., initial cold rolled blank). Based on these results, the hydrogen absorption was facilitated during hot press forming, but the hydrogen was sequentially desorbed during automotive sequential lines on aluminum-coated hot-stamped steel parts.Hye-Jin KimHyun-Yeong JungSeung-Pill JungJi-Hee SonJoo-Sik HyunJu-Sung KimMDPI AGarticlehot-stamped boron steelthermal desorption spectroscopydiffusible hydrogenTechnologyTElectrical engineering. Electronics. Nuclear engineeringTK1-9971Engineering (General). Civil engineering (General)TA1-2040MicroscopyQH201-278.5Descriptive and experimental mechanicsQC120-168.85ENMaterials, Vol 14, Iss 6730, p 6730 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	hot-stamped boron steel thermal desorption spectroscopy diffusible hydrogen 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	hot-stamped boron steel thermal desorption spectroscopy diffusible hydrogen 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 Hye-Jin Kim Hyun-Yeong Jung Seung-Pill Jung Ji-Hee Son Joo-Sik Hyun Ju-Sung Kim Hydrogen Absorption and Desorption Behavior on Aluminum-Coated Hot-Stamped Boron Steel during Hot Press Forming and Automotive Manufacturing Processes
description	Our study mainly focused on diffusible hydrogen in aluminum–silicon-coated hot-stamped boron steel during a hot press forming process and in pre-treatment sequential lines of the automotive manufacturing process using a thermal desorption spectroscopy (TDS) technique. First, in the hot stamping procedure, as the soaking time increased in the heating furnace at a specific dew point when austenitizing, a high concentration of diffusible hydrogen was absorbed into the hot-stamped boron steel. Based on the TDS analysis of hydrogen absorbed from hot stamping, the activation energy value of hydrogen trapping in 1.8 GPa grade steel is lower than that of 1.5 GPa grade steel. This means that diffusible hydrogen can be more easily diffused into defective sites of the microstructure at a higher level of the tensile strength grade. Second, in sequential pre-treatment lines of the automotive manufacturing process, additional hydrogen did not flow into the surface, and an electro-deposition process, including a baking procedure, was effective in removing diffusible hydrogen, which was similar to the residual hydrogen of the as-received state (i.e., initial cold rolled blank). Based on these results, the hydrogen absorption was facilitated during hot press forming, but the hydrogen was sequentially desorbed during automotive sequential lines on aluminum-coated hot-stamped steel parts.
format	article
author	Hye-Jin Kim Hyun-Yeong Jung Seung-Pill Jung Ji-Hee Son Joo-Sik Hyun Ju-Sung Kim
author_facet	Hye-Jin Kim Hyun-Yeong Jung Seung-Pill Jung Ji-Hee Son Joo-Sik Hyun Ju-Sung Kim
author_sort	Hye-Jin Kim
title	Hydrogen Absorption and Desorption Behavior on Aluminum-Coated Hot-Stamped Boron Steel during Hot Press Forming and Automotive Manufacturing Processes
title_short	Hydrogen Absorption and Desorption Behavior on Aluminum-Coated Hot-Stamped Boron Steel during Hot Press Forming and Automotive Manufacturing Processes
title_full	Hydrogen Absorption and Desorption Behavior on Aluminum-Coated Hot-Stamped Boron Steel during Hot Press Forming and Automotive Manufacturing Processes
title_fullStr	Hydrogen Absorption and Desorption Behavior on Aluminum-Coated Hot-Stamped Boron Steel during Hot Press Forming and Automotive Manufacturing Processes
title_full_unstemmed	Hydrogen Absorption and Desorption Behavior on Aluminum-Coated Hot-Stamped Boron Steel during Hot Press Forming and Automotive Manufacturing Processes
title_sort	hydrogen absorption and desorption behavior on aluminum-coated hot-stamped boron steel during hot press forming and automotive manufacturing processes
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/5f61adae51004471b7ba4d68037dec2d
work_keys_str_mv	AT hyejinkim hydrogenabsorptionanddesorptionbehavioronaluminumcoatedhotstampedboronsteelduringhotpressformingandautomotivemanufacturingprocesses AT hyunyeongjung hydrogenabsorptionanddesorptionbehavioronaluminumcoatedhotstampedboronsteelduringhotpressformingandautomotivemanufacturingprocesses AT seungpilljung hydrogenabsorptionanddesorptionbehavioronaluminumcoatedhotstampedboronsteelduringhotpressformingandautomotivemanufacturingprocesses AT jiheeson hydrogenabsorptionanddesorptionbehavioronaluminumcoatedhotstampedboronsteelduringhotpressformingandautomotivemanufacturingprocesses AT joosikhyun hydrogenabsorptionanddesorptionbehavioronaluminumcoatedhotstampedboronsteelduringhotpressformingandautomotivemanufacturingprocesses AT jusungkim hydrogenabsorptionanddesorptionbehavioronaluminumcoatedhotstampedboronsteelduringhotpressformingandautomotivemanufacturingprocesses
_version_	1718431888445538304

Hydrogen Absorption and Desorption Behavior on Aluminum-Coated Hot-Stamped Boron Steel during Hot Press Forming and Automotive Manufacturing Processes

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