Enhanced structural refinement on eutectic medium-entropy alloy CrCoNiNb0.48 by laser remelting

Jiachen Zhang; Taiwen Huang; Zhonglin Shen; Hai Jun Su; Jun Zhang; Lin Liu

doi:10.1016/j.matlet.2021.130710

Enhanced structural refinement on eutectic medium-entropy alloy CrCoNiNb_0.48 by laser remelting

Jiachen Zhang
, Taiwen Huang
, Zhonglin Shen
, Hai Jun Su
, Jun Zhang
, Lin Liu

School of Materials Sience and Engineering

Northwestern Polytechnical University Xian

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

29 Scopus citations

Abstract

A novel efficient method to design eutectic medium-entropy alloys with typical lamellar structure is successfully proposed. The CrCoNiNb_0.48 alloy is prepared with microstructure comprised of FCC and Laves phases. After laser remelting, the nano-scale eutectic lamellar is formed and the eutectic lamellar spacing is refined to approximately 30 nm from 300 nm (as-cast). Thus, the hardness of CrCoNiNb_0.48 with laser remelting is approximately 50% increase over as-cast. Moreover, through calculation, the strain hardening exponent of the laser-treated alloy is almost twice of that in the as-cast alloy.

Original language	English
Article number	130710
Journal	Materials Letters
Volume	304
DOIs	https://doi.org/10.1016/j.matlet.2021.130710
State	Published - 1 Dec 2021

Keywords

Compression properties
Eutectic medium entropy alloys
Indentation and hardness
Laser remelting
Microstructure

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10.1016/j.matlet.2021.130710

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title = "Enhanced structural refinement on eutectic medium-entropy alloy CrCoNiNb0.48 by laser remelting",

abstract = "A novel efficient method to design eutectic medium-entropy alloys with typical lamellar structure is successfully proposed. The CrCoNiNb0.48 alloy is prepared with microstructure comprised of FCC and Laves phases. After laser remelting, the nano-scale eutectic lamellar is formed and the eutectic lamellar spacing is refined to approximately 30 nm from 300 nm (as-cast). Thus, the hardness of CrCoNiNb0.48 with laser remelting is approximately 50\% increase over as-cast. Moreover, through calculation, the strain hardening exponent of the laser-treated alloy is almost twice of that in the as-cast alloy.",

keywords = "Compression properties, Eutectic medium entropy alloys, Indentation and hardness, Laser remelting, Microstructure",

author = "Jiachen Zhang and Taiwen Huang and Zhonglin Shen and Su, \{Hai Jun\} and Jun Zhang and Lin Liu",

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year = "2021",

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doi = "10.1016/j.matlet.2021.130710",

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journal = "Materials Letters",

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TY - JOUR

T1 - Enhanced structural refinement on eutectic medium-entropy alloy CrCoNiNb0.48 by laser remelting

AU - Zhang, Jiachen

AU - Huang, Taiwen

AU - Shen, Zhonglin

AU - Su, Hai Jun

AU - Zhang, Jun

AU - Liu, Lin

PY - 2021/12/1

Y1 - 2021/12/1

N2 - A novel efficient method to design eutectic medium-entropy alloys with typical lamellar structure is successfully proposed. The CrCoNiNb0.48 alloy is prepared with microstructure comprised of FCC and Laves phases. After laser remelting, the nano-scale eutectic lamellar is formed and the eutectic lamellar spacing is refined to approximately 30 nm from 300 nm (as-cast). Thus, the hardness of CrCoNiNb0.48 with laser remelting is approximately 50% increase over as-cast. Moreover, through calculation, the strain hardening exponent of the laser-treated alloy is almost twice of that in the as-cast alloy.

AB - A novel efficient method to design eutectic medium-entropy alloys with typical lamellar structure is successfully proposed. The CrCoNiNb0.48 alloy is prepared with microstructure comprised of FCC and Laves phases. After laser remelting, the nano-scale eutectic lamellar is formed and the eutectic lamellar spacing is refined to approximately 30 nm from 300 nm (as-cast). Thus, the hardness of CrCoNiNb0.48 with laser remelting is approximately 50% increase over as-cast. Moreover, through calculation, the strain hardening exponent of the laser-treated alloy is almost twice of that in the as-cast alloy.

KW - Compression properties

KW - Eutectic medium entropy alloys

KW - Indentation and hardness

KW - Laser remelting

KW - Microstructure

UR - https://www.scopus.com/pages/publications/85113169748

U2 - 10.1016/j.matlet.2021.130710

DO - 10.1016/j.matlet.2021.130710

M3 - 文章

AN - SCOPUS:85113169748

SN - 0167-577X

VL - 304

JO - Materials Letters

JF - Materials Letters

M1 - 130710

ER -

Enhanced structural refinement on eutectic medium-entropy alloy CrCoNiNb_0.48 by laser remelting

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Keywords

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