Microstructure and mechanical properties of dissimilar laser lap joint between CoCrFeMnNi-high entropy alloy and duplex stainless steel

Nana Kwabena Adomako; Jeoung Han Kim

doi:10.1016/j.matlet.2021.129354

Microstructure and mechanical properties of dissimilar laser lap joint between CoCrFeMnNi-high entropy alloy and duplex stainless steel

Nana Kwabena Adomako
, Jeoung Han Kim

Alloy Behavior & Design

Research output: Contribution to journal › Article › peer-review

22 Scopus citations

Abstract

A lap joint was formed between a CoCrFeMnNi-high entropy alloy (HEA) and duplex stainless steel (DSS) using laser beam welding. The microstructure morphology of the weld varied, with the upper section of the DSS side comprising a primary austenite phase and a secondary delta ferrite phase. An unmixed region that flowed from the DSS and characterized as ferrite was observed as the main metallurgical feature of the weld. The lower section was characterized by single austenite phase with large grains. Hardness fluctuations occurred within the weld, where the unmixed zone exhibited the highest hardness. The tensile shear strength of the joint was 470 MPa.

Original language	English
Article number	129354
Journal	Materials Letters
Volume	288
DOIs	https://doi.org/10.1016/j.matlet.2021.129354
State	Published - Apr 1 2021

Keywords

Dissimilar welding
High-entropy alloy
Stainless steel
Unmixed zone

Access to Document

10.1016/j.matlet.2021.129354

Cite this

@article{482ca9928de944a58827b4f335b039bc,

title = "Microstructure and mechanical properties of dissimilar laser lap joint between CoCrFeMnNi-high entropy alloy and duplex stainless steel",

abstract = "A lap joint was formed between a CoCrFeMnNi-high entropy alloy (HEA) and duplex stainless steel (DSS) using laser beam welding. The microstructure morphology of the weld varied, with the upper section of the DSS side comprising a primary austenite phase and a secondary delta ferrite phase. An unmixed region that flowed from the DSS and characterized as ferrite was observed as the main metallurgical feature of the weld. The lower section was characterized by single austenite phase with large grains. Hardness fluctuations occurred within the weld, where the unmixed zone exhibited the highest hardness. The tensile shear strength of the joint was 470 MPa.",

keywords = "Dissimilar welding, High-entropy alloy, Stainless steel, Unmixed zone",

author = "Adomako, \{Nana Kwabena\} and Kim, \{Jeoung Han\}",

note = "Publisher Copyright: {\textcopyright} 2021 Elsevier B.V.",

year = "2021",

month = apr,

day = "1",

doi = "10.1016/j.matlet.2021.129354",

language = "English",

volume = "288",

journal = "Materials Letters",

issn = "0167-577X",

publisher = "Elsevier",

}

TY - JOUR

T1 - Microstructure and mechanical properties of dissimilar laser lap joint between CoCrFeMnNi-high entropy alloy and duplex stainless steel

AU - Adomako, Nana Kwabena

AU - Kim, Jeoung Han

PY - 2021/4/1

Y1 - 2021/4/1

N2 - A lap joint was formed between a CoCrFeMnNi-high entropy alloy (HEA) and duplex stainless steel (DSS) using laser beam welding. The microstructure morphology of the weld varied, with the upper section of the DSS side comprising a primary austenite phase and a secondary delta ferrite phase. An unmixed region that flowed from the DSS and characterized as ferrite was observed as the main metallurgical feature of the weld. The lower section was characterized by single austenite phase with large grains. Hardness fluctuations occurred within the weld, where the unmixed zone exhibited the highest hardness. The tensile shear strength of the joint was 470 MPa.

AB - A lap joint was formed between a CoCrFeMnNi-high entropy alloy (HEA) and duplex stainless steel (DSS) using laser beam welding. The microstructure morphology of the weld varied, with the upper section of the DSS side comprising a primary austenite phase and a secondary delta ferrite phase. An unmixed region that flowed from the DSS and characterized as ferrite was observed as the main metallurgical feature of the weld. The lower section was characterized by single austenite phase with large grains. Hardness fluctuations occurred within the weld, where the unmixed zone exhibited the highest hardness. The tensile shear strength of the joint was 470 MPa.

KW - Dissimilar welding

KW - High-entropy alloy

KW - Stainless steel

KW - Unmixed zone

UR - https://www.scopus.com/pages/publications/85100113355

U2 - 10.1016/j.matlet.2021.129354

DO - 10.1016/j.matlet.2021.129354

M3 - Article

AN - SCOPUS:85100113355

SN - 0167-577X

VL - 288

JO - Materials Letters

JF - Materials Letters

M1 - 129354

ER -

Microstructure and mechanical properties of dissimilar laser lap joint between CoCrFeMnNi-high entropy alloy and duplex stainless steel

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this