High temperature fracture behavior of 316L stainless steel-Inconel 718 functionally graded materials manufactured by directed energy deposition: Role of interface orientation and heat treatment

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F26316919%3A_____%2F24%3AN0000005" target="_blank" >RIV/26316919:_____/24:N0000005 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/abs/pii/S0921509324003204" target="_blank" >https://www.sciencedirect.com/science/article/abs/pii/S0921509324003204</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.msea.2024.146389" target="_blank" >10.1016/j.msea.2024.146389</a>

Jazyk výsledku

angličtina

Název v původním jazyce

High temperature fracture behavior of 316L stainless steel-Inconel 718 functionally graded materials manufactured by directed energy deposition: Role of interface orientation and heat treatment

Popis výsledku v původním jazyce

Investigation of functionally graded component consisting of stainless steel 316L (SS316L) and Inconel 718 superalloy (IN718) deposited by laser directed energy deposition (LDED) is presented here. Ambient as well as high temperature mechanical behavior is observed for as-deposited (AD) and for heat-treated (HT) states. The gradient sample was manufactured with the interface orientation parallel and perpendicular to the loading direction to understand the impact of this factor on the materials properties. The evolution of chemical composition, grain structure, phase transformations, and tensile properties at room and elevated temperatures, as well as creep behavior before and after heat treatment was determined. With use of digital image correlation (DIC) analysis, the effects of interface orientation and heat treatment on deformation and fracture mechanism was revealed. Results show that heat treatment smooths the chemical composition and mechanical deformation process, as characterized by the formation of an enhanced gradient diffusion zone in the IN718-rich region near the interface. Heat treatment impacts mechanical properties based on the orientation of the interface. Specimens with interfaces parallel to the load direction combine the strengths of both materials effectively. After HT, they exhibit enhanced mechanical performance, achieving an ultimate tensile strength of 973 MPa and 14% elongation at room temperature. Additionally, at elevated temperatures, the specimen demonstrates exceptional creep resistance, sustaining structural integrity for over 1700 h at 650 degrees C and 225 MPa. Sample orientation is shown a decisive effect on deformation and fracture mechanism, with the interface not consistently being the weakest point across various gradient samples.

Název v anglickém jazyce

High temperature fracture behavior of 316L stainless steel-Inconel 718 functionally graded materials manufactured by directed energy deposition: Role of interface orientation and heat treatment

Popis výsledku anglicky

Investigation of functionally graded component consisting of stainless steel 316L (SS316L) and Inconel 718 superalloy (IN718) deposited by laser directed energy deposition (LDED) is presented here. Ambient as well as high temperature mechanical behavior is observed for as-deposited (AD) and for heat-treated (HT) states. The gradient sample was manufactured with the interface orientation parallel and perpendicular to the loading direction to understand the impact of this factor on the materials properties. The evolution of chemical composition, grain structure, phase transformations, and tensile properties at room and elevated temperatures, as well as creep behavior before and after heat treatment was determined. With use of digital image correlation (DIC) analysis, the effects of interface orientation and heat treatment on deformation and fracture mechanism was revealed. Results show that heat treatment smooths the chemical composition and mechanical deformation process, as characterized by the formation of an enhanced gradient diffusion zone in the IN718-rich region near the interface. Heat treatment impacts mechanical properties based on the orientation of the interface. Specimens with interfaces parallel to the load direction combine the strengths of both materials effectively. After HT, they exhibit enhanced mechanical performance, achieving an ultimate tensile strength of 973 MPa and 14% elongation at room temperature. Additionally, at elevated temperatures, the specimen demonstrates exceptional creep resistance, sustaining structural integrity for over 1700 h at 650 degrees C and 225 MPa. Sample orientation is shown a decisive effect on deformation and fracture mechanism, with the interface not consistently being the weakest point across various gradient samples.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20501 - Materials engineering

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2024

Kód důvěrnosti údajů

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

Název periodika

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING

ISSN

0921-5093

e-ISSN

1873-4936

Svazek periodika

898

Číslo periodika v rámci svazku

APR 2024

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

11

Strana od-do

nestránkováno

Kód UT WoS článku

001218169400001

EID výsledku v databázi Scopus

2-s2.0-85189002566