Laser-cladding of high entropy alloy coatings: an overview

IF 2.9 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Technology Pub Date : 2022-11-26 DOI:10.1080/10667857.2022.2151696

Na Gong, Tzee Luai Meng, Jing Cao, Yong Wang, Rahul Karyappa, Chee Kiang Ivan Tan, Ady Suwardi, Qiang Zhu, Andrew Chun Yong Ngo, Kamakhya Prakash Misra, R. D. K Misra, Hongfei Liu

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引用次数: 8

Abstract

ABSTRACT

High entropy alloys (HEAs), consisting of five or more elements with nearly equal atomic composition with one another (5–35%), are new-generation alloys that have attracted significant interest since their advent in 2004 because of their unique structural and mechanical properties and thermodynamic and chemical stability. Some characteristics, including high mechanical strength at elevated temperatures, high ductility and fracture toughness at cryogenic temperatures and high corrosion, erosion and wear resistance, have been demonstrated for HEAs that outperform traditional alloys and superalloys. Laser-cladding (LC) is an additive manufacturing technique that has good feasibility in designing and processing HEAs for advanced structural components and protective coatings. This overview provides a glimpse of recent advances in LC of HEAs in terms of design fundamentals, metallurgical phase and microstructure, specific properties for advanced coating applications and the effect of ceramic particles reinforcement in LC deposition of HEA coatings.

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激光熔覆高熵合金涂层的研究进展

摘要:熵合金(HEAs)是新一代合金，由5种或5种以上的元素组成，它们的原子组成几乎相等(5-35%)，自2004年问世以来，由于其独特的结构和力学性能以及热力学和化学稳定性而引起了人们的极大兴趣。HEAs的一些特性，包括高温下的高机械强度，低温下的高延展性和断裂韧性，以及高腐蚀、侵蚀和耐磨性，已经证明其优于传统合金和高温合金。激光熔覆(LC)是一种增材制造技术，在先进结构部件和防护涂层的HEAs设计和加工中具有良好的可行性。本文概述了HEA LC在设计基础、冶金相和微观结构、高级涂层应用的特定性能以及陶瓷颗粒增强在HEA涂层LC沉积中的作用等方面的最新进展。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Materials Technology 工程技术-材料科学：综合

CiteScore

6.00

自引率

9.70%

发文量

105

审稿时长

8.7 months

期刊介绍： Materials Technology: Advanced Performance Materials provides an international medium for the communication of progress in the field of functional materials (advanced materials in which composition, structure and surface are functionalised to confer specific, applications-oriented properties). The focus is on materials for biomedical, electronic, photonic and energy applications. Contributions should address the physical, chemical, or engineering sciences that underpin the design and application of these materials. The scientific and engineering aspects may include processing and structural characterisation from the micro- to nanoscale to achieve specific functionality.