Strain rate sensitivity and mechanical anisotropy of selective laser melted 17-4 PH stainless steel

Quasi-static and dynamic tensile testing was performed upon machined tensile specimens fabricated from bulk primitives produced by the consolidation of water atomized, 17-4 precipitation hardened stainless steel powder by layer-based, selective laser melting. Such mechanical evaluation was performed...

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Autores principales:	Tyler LEBRUN, Kenichi TANIGAKI, Keitaro HORIKAWA, Hidetoshi KOBAYASHI
Formato:	article
Lenguaje:	EN
Publicado:	The Japan Society of Mechanical Engineers 2014
Materias:	additive manufacturing selective laser melting split-hopkinson bar 17-4 ph stainless steel Mechanical engineering and machinery TJ1-1570
Acceso en línea:	https://doaj.org/article/f62661f7e00d418da78c28710a5d279c
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spelling	oai:doaj.org-article:f62661f7e00d418da78c28710a5d279c2021-11-26T06:12:42ZStrain rate sensitivity and mechanical anisotropy of selective laser melted 17-4 PH stainless steel2187-974510.1299/mej.2014smm0049https://doaj.org/article/f62661f7e00d418da78c28710a5d279c2014-10-01T00:00:00Zhttps://www.jstage.jst.go.jp/article/mej/1/5/1_2014smm0049/_pdf/-char/enhttps://doaj.org/toc/2187-9745Quasi-static and dynamic tensile testing was performed upon machined tensile specimens fabricated from bulk primitives produced by the consolidation of water atomized, 17-4 precipitation hardened stainless steel powder by layer-based, selective laser melting. Such mechanical evaluation was performed by a screw-driven uniaxial tension testing machine and a split-Hopkinson tensile bar apparatus. Strain rates evaluated include 10-3, 10-1 and 103 s-1. Prior to tensile testing, specimens underwent additional thermal processing in accordance with industry standards. Evaluations of the solution heat treatment and peak-age conditions were made alongside similarly prepared, but traditionally processed specimens meeting the same material standard for chemistry (drawn rod). Tensile strength across all strain rates is higher for these selective laser melted (SLM) specimens as a result of microstructure refinement through rapid melt, solidification and cooling during processing. Ultimate tensile and yield strengths increase with increasing strain rate and show no preferential direction relative to the building direction. Elongation anisotropy is observed as a consequence of directional porosity stemming from pores limited to within individual layers. Specimens loaded normal to the SLM building plane commonly rupture at small elongation because of this mechanical fibering from the selective laser melting process.Tyler LEBRUNKenichi TANIGAKIKeitaro HORIKAWAHidetoshi KOBAYASHIThe Japan Society of Mechanical Engineersarticleadditive manufacturingselective laser meltingsplit-hopkinson bar17-4 phstainless steelMechanical engineering and machineryTJ1-1570ENMechanical Engineering Journal, Vol 1, Iss 5, Pp SMM0049-SMM0049 (2014)
institution	DOAJ
collection	DOAJ
language	EN
topic	additive manufacturing selective laser melting split-hopkinson bar 17-4 ph stainless steel Mechanical engineering and machinery TJ1-1570
spellingShingle	additive manufacturing selective laser melting split-hopkinson bar 17-4 ph stainless steel Mechanical engineering and machinery TJ1-1570 Tyler LEBRUN Kenichi TANIGAKI Keitaro HORIKAWA Hidetoshi KOBAYASHI Strain rate sensitivity and mechanical anisotropy of selective laser melted 17-4 PH stainless steel
description	Quasi-static and dynamic tensile testing was performed upon machined tensile specimens fabricated from bulk primitives produced by the consolidation of water atomized, 17-4 precipitation hardened stainless steel powder by layer-based, selective laser melting. Such mechanical evaluation was performed by a screw-driven uniaxial tension testing machine and a split-Hopkinson tensile bar apparatus. Strain rates evaluated include 10-3, 10-1 and 103 s-1. Prior to tensile testing, specimens underwent additional thermal processing in accordance with industry standards. Evaluations of the solution heat treatment and peak-age conditions were made alongside similarly prepared, but traditionally processed specimens meeting the same material standard for chemistry (drawn rod). Tensile strength across all strain rates is higher for these selective laser melted (SLM) specimens as a result of microstructure refinement through rapid melt, solidification and cooling during processing. Ultimate tensile and yield strengths increase with increasing strain rate and show no preferential direction relative to the building direction. Elongation anisotropy is observed as a consequence of directional porosity stemming from pores limited to within individual layers. Specimens loaded normal to the SLM building plane commonly rupture at small elongation because of this mechanical fibering from the selective laser melting process.
format	article
author	Tyler LEBRUN Kenichi TANIGAKI Keitaro HORIKAWA Hidetoshi KOBAYASHI
author_facet	Tyler LEBRUN Kenichi TANIGAKI Keitaro HORIKAWA Hidetoshi KOBAYASHI
author_sort	Tyler LEBRUN
title	Strain rate sensitivity and mechanical anisotropy of selective laser melted 17-4 PH stainless steel
title_short	Strain rate sensitivity and mechanical anisotropy of selective laser melted 17-4 PH stainless steel
title_full	Strain rate sensitivity and mechanical anisotropy of selective laser melted 17-4 PH stainless steel
title_fullStr	Strain rate sensitivity and mechanical anisotropy of selective laser melted 17-4 PH stainless steel
title_full_unstemmed	Strain rate sensitivity and mechanical anisotropy of selective laser melted 17-4 PH stainless steel
title_sort	strain rate sensitivity and mechanical anisotropy of selective laser melted 17-4 ph stainless steel
publisher	The Japan Society of Mechanical Engineers
publishDate	2014
url	https://doaj.org/article/f62661f7e00d418da78c28710a5d279c
work_keys_str_mv	AT tylerlebrun strainratesensitivityandmechanicalanisotropyofselectivelasermelted174phstainlesssteel AT kenichitanigaki strainratesensitivityandmechanicalanisotropyofselectivelasermelted174phstainlesssteel AT keitarohorikawa strainratesensitivityandmechanicalanisotropyofselectivelasermelted174phstainlesssteel AT hidetoshikobayashi strainratesensitivityandmechanicalanisotropyofselectivelasermelted174phstainlesssteel
_version_	1718409818378600448

Strain rate sensitivity and mechanical anisotropy of selective laser melted 17-4 PH stainless steel

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