Effect of post process shear straining on structure and mechanical nproperties of 316 L stainless steel manufactured via powder bed fusion

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F22%3A00561191" target="_blank" >RIV/68081723:_____/22:00561191 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61389005:_____/22:00561191

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S2214860422005176?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S2214860422005176?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.addma.2022.103128" target="_blank" >10.1016/j.addma.2022.103128</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Effect of post process shear straining on structure and mechanical nproperties of 316 L stainless steel manufactured via powder bed fusion

Popis výsledku v původním jazyce

Powder Bed Fusion (PBF) has become popular despite the fact that PBF-prepared components feature charac teristic defects. Their performance, however, can be shifted to the next level by the application of post processing, advantageously via intensive plastic deformation. The study characterizes the effects of rotary nswaging performed at hot, cold, and cryogenic conditions on the (sub)structure and mechanical properties of nworkpieces of AISI 316 L stainless steel, favourably used in constructions as well as medicine, manufactured by nPBF. The workpieces built in the horizontal and vertical directions were analysed to assess their structures, nresidual strain and stress, density, and porosity, porosity was observed primarily in the horizontally built nworkpiece also featuring lower density and larger average grain size. Subsequently, the workpieces were sub jected to rotary swaging, which contributed to (almost) complete elimination of porosity, evident substructure ndevelopment, and significant grain refinement – the vertically built workpiece exhibited the avg. grain size of n2.3 µm, 1.8 µm, and 0.1 µm after hot, cold, and cryo swaging. The cryo-swaged sample also exhibited specific ntexture, room temperature ultimate tensile strength (UTS) of more than 2 000 MPa, and two times higher nmicrohardness compared to the as-build workpiece. All the swaged pieces exhibited significantly improved nmechanical properties, even at the testing temperature of 900 ◦C.

Název v anglickém jazyce

Effect of post process shear straining on structure and mechanical nproperties of 316 L stainless steel manufactured via powder bed fusion

Popis výsledku anglicky

Powder Bed Fusion (PBF) has become popular despite the fact that PBF-prepared components feature charac teristic defects. Their performance, however, can be shifted to the next level by the application of post processing, advantageously via intensive plastic deformation. The study characterizes the effects of rotary nswaging performed at hot, cold, and cryogenic conditions on the (sub)structure and mechanical properties of nworkpieces of AISI 316 L stainless steel, favourably used in constructions as well as medicine, manufactured by nPBF. The workpieces built in the horizontal and vertical directions were analysed to assess their structures, nresidual strain and stress, density, and porosity, porosity was observed primarily in the horizontally built nworkpiece also featuring lower density and larger average grain size. Subsequently, the workpieces were sub jected to rotary swaging, which contributed to (almost) complete elimination of porosity, evident substructure ndevelopment, and significant grain refinement – the vertically built workpiece exhibited the avg. grain size of n2.3 µm, 1.8 µm, and 0.1 µm after hot, cold, and cryo swaging. The cryo-swaged sample also exhibited specific ntexture, room temperature ultimate tensile strength (UTS) of more than 2 000 MPa, and two times higher nmicrohardness compared to the as-build workpiece. All the swaged pieces exhibited significantly improved nmechanical properties, even at the testing temperature of 900 ◦C.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20501 - Materials engineering

Projekt

<a href="/cs/project/LM2018111" target="_blank" >LM2018111: Evropský spalační zdroj - účast České republiky</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2022

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Additive Manufacturing

ISSN

2214-8604

e-ISSN

2214-7810

Svazek periodika

59

Číslo periodika v rámci svazku

NOV

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

15

Strana od-do

103128

Kód UT WoS článku

000862765800002

EID výsledku v databázi Scopus

2-s2.0-85138788954