Influence of scanning speed on titanium alloy processed with TC4+Ni60/hBN composite powder by laser metal deposition coating technology

IF 1.2 4区工程技术 Q3 ENGINEERING, AEROSPACE Aircraft Engineering and Aerospace Technology Pub Date : 2024-07-02 DOI:10.1108/aeat-01-2023-0029

Md Helal Miah, Dharmahinder Singh Chand, Gurmail Singh Malhi, Gongdong Wang

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Abstract

Purpose

Regarding the broadening of the titanium alloy application field, the surface treatment coating of TC4 alloy has become an essential global research topic. This study aims to illustrate the titanium-based composite coating is created by laser cladding TC4+Ni60/hBN composite powder onto the surface of the TC4 alloy.

Design/methodology/approach

Different laser scanning speeds were initially selected to prepare TC4+Ni60/hBN titanium-based composite coating on the surface of TC4 alloy using RFL-C1000 Raycus fiber laser. Second, the cladding layers with different laser scanning speeds are composed of Ti₂Ni, TiN_0.3, TiC, TiB, α-Ti and other phases. Finally, precision balances, friction and wear testing machines were used to analyze and test the structure, phase, hardness, wear amount and friction coefficient of the composite coating and to study the effect of laser scanning speed on the microstructure and properties of the titanium-based composite coating.

Findings

It is evident that at the low laser scanning speed, the reinforcing phase agglomeration area is distributed in the substrate as a network. Increasing the laser scanning speed can reduce the cladding layer's friction coefficient and improve the cladding layer's hardness and wear resistance. But too high a laser scanning speed will cause defects such as pores and cracks in the cladding layer and also affect the cladding layer. The bonding performance of the layer and the substrate is optimal in this research at a laser scanning speed of 10 mm/s.

Originality/value

This research has practical value in improving the quality of surface treatment coating in modern aerospace and automotive companies.

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扫描速度对采用激光金属沉积涂层技术加工 TC4+Ni60/hBN 复合粉末的钛合金的影响

目的随着钛合金应用领域的不断拓宽，TC4 合金表面处理涂层已成为全球性的重要研究课题。本研究旨在说明通过激光熔覆 TC4+Ni60/hBN 复合粉末，在 TC4 合金表面制备钛基复合涂层的过程。其次，不同激光扫描速度下的覆层由 Ti2Ni、TiN0.3、TiC、TiB、α-Ti 和其他相组成。最后，使用精密天平、摩擦磨损试验机对复合涂层的结构、相位、硬度、磨损量和摩擦系数进行了分析和测试，并研究了激光扫描速度对钛基复合涂层微观结构和性能的影响。提高激光扫描速度可以降低覆层的摩擦系数，提高覆层的硬度和耐磨性。但过高的激光扫描速度会导致熔覆层出现气孔和裂纹等缺陷，也会影响熔覆层。在本研究中，激光扫描速度为 10 mm/s 时，层与基体的结合性能最佳。

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

Aircraft Engineering and Aerospace Technology 工程技术-工程：宇航

CiteScore

3.20

自引率

13.30%

发文量

168

审稿时长

8 months

期刊介绍： Aircraft Engineering and Aerospace Technology provides a broad coverage of the materials and techniques employed in the aircraft and aerospace industry. Its international perspectives allow readers to keep up to date with current thinking and developments in critical areas such as coping with increasingly overcrowded airways, the development of new materials, recent breakthroughs in navigation technology - and more.