Optimizing laser cladding process parameters for transformation-induced plasticity FeMnCoCr high entropy alloy: A multi-objective approach

IF 5.3 2区材料科学 Q1 MATERIALS SCIENCE, COATINGS & FILMS

Surface & Coatings Technology Pub Date : 2024-11-10 DOI:10.1016/j.surfcoat.2024.131536

Litong Feng , Guo Jin , Xiufang Cui , Bingwen Lu , Zhen Dong , Yajie Guan , Xinyao Li , Xingchen Yan , Min Liu

{"title":"Optimizing laser cladding process parameters for transformation-induced plasticity FeMnCoCr high entropy alloy: A multi-objective approach","authors":"Litong Feng , Guo Jin , Xiufang Cui , Bingwen Lu , Zhen Dong , Yajie Guan , Xinyao Li , Xingchen Yan , Min Liu","doi":"10.1016/j.surfcoat.2024.131536","DOIUrl":null,"url":null,"abstract":"<div><div>A multi-objective optimization approach utilizing the response surface method (RSM) is proposed to determine the optimal processing parameters for laser cladding of Fe50Mn30Co10Cr10 coating. In this paper, a single-variable control method was employed to adjust the laser cladding parameters, and preliminary experiments were conducted to establish the optimization range for the RSM laser cladding parameters. A mathematical prediction model of input processing parameters (laser power, scanning speed and powder feed speed) and output response (dilution rate, W/H, microhardness and porosity) was established by the response surface method. The results indicated that both the dilution rate and microhardness had a positive correlation with laser power and scanning speed, while they were negatively correlated with the powder feed rate. The scanning speed is the most significant factor influencing the porosity of the coating, followed by the powder feed rate. The optimal processing parameters were identified as follows: laser power at 1750 W, scanning speed at 8.0 mm/s, and powder feed rate at 11.5 g/min. The model demonstrated strong agreement with the experimental results. The coating molding quality is exceptional, with an average porosity of 0.07 % and an average microhardness of 208.32 HV0.2. Meanwhile, the coating was composed of HCP phase and FCC phase, with the HCP phase comprising15.6 % and the FCC phase 84.4 %, respectively. Under the optimal processing parameters, the Fe50Mn30Co10Cr10 high-entropy alloy coating demonstrated impressive ductility and strength, with a deformation of 55.93 % and a compressive strength of 2153.7 MPa. The fracture mechanism of Fe50Mn30Co10Cr10 coatings is transcrystalline fracture and toughness fractures.</div></div>","PeriodicalId":22009,"journal":{"name":"Surface & Coatings Technology","volume":"495 ","pages":"Article 131536"},"PeriodicalIF":5.3000,"publicationDate":"2024-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Surface & Coatings Technology","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0257897224011678","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MATERIALS SCIENCE, COATINGS & FILMS","Score":null,"Total":0}

引用次数: 0

Abstract

A multi-objective optimization approach utilizing the response surface method (RSM) is proposed to determine the optimal processing parameters for laser cladding of Fe₅₀Mn₃₀Co₁₀Cr₁₀ coating. In this paper, a single-variable control method was employed to adjust the laser cladding parameters, and preliminary experiments were conducted to establish the optimization range for the RSM laser cladding parameters. A mathematical prediction model of input processing parameters (laser power, scanning speed and powder feed speed) and output response (dilution rate, W/H, microhardness and porosity) was established by the response surface method. The results indicated that both the dilution rate and microhardness had a positive correlation with laser power and scanning speed, while they were negatively correlated with the powder feed rate. The scanning speed is the most significant factor influencing the porosity of the coating, followed by the powder feed rate. The optimal processing parameters were identified as follows: laser power at 1750 W, scanning speed at 8.0 mm/s, and powder feed rate at 11.5 g/min. The model demonstrated strong agreement with the experimental results. The coating molding quality is exceptional, with an average porosity of 0.07 % and an average microhardness of 208.32 HV_0.2. Meanwhile, the coating was composed of HCP phase and FCC phase, with the HCP phase comprising15.6 % and the FCC phase 84.4 %, respectively. Under the optimal processing parameters, the Fe₅₀Mn₃₀Co₁₀Cr₁₀ high-entropy alloy coating demonstrated impressive ductility and strength, with a deformation of 55.93 % and a compressive strength of 2153.7 MPa. The fracture mechanism of Fe₅₀Mn₃₀Co₁₀Cr₁₀ coatings is transcrystalline fracture and toughness fractures.

查看原文本刊更多论文

优化变形诱导塑性铁锰钴铬高熵合金的激光熔覆工艺参数：多目标方法

本文提出了一种利用响应面法（RSM）的多目标优化方法，以确定 Fe50Mn30Co10Cr10 涂层激光熔覆的最佳加工参数。本文采用单变量控制方法调整激光熔覆参数，并通过初步实验确定了 RSM 激光熔覆参数的优化范围。利用响应面法建立了输入加工参数（激光功率、扫描速度和送粉速度）和输出响应（稀释率、W/H、显微硬度和孔隙率）的数学预测模型。结果表明，稀释率和显微硬度与激光功率和扫描速度呈正相关，而与给粉速度呈负相关。扫描速度是影响涂层孔隙率的最重要因素，其次是粉末进给速度。最佳加工参数确定如下：激光功率为 1750 W，扫描速度为 8.0 mm/s，粉末进给量为 11.5 g/min。模型与实验结果非常吻合。涂层成型质量优异，平均孔隙率为 0.07%，平均显微硬度为 208.32 HV0.2。同时，涂层由 HCP 相和 FCC 相组成，其中 HCP 相占 15.6%，FCC 相占 84.4%。在最佳加工参数下，Fe50Mn30Co10Cr10 高熵合金涂层表现出惊人的延展性和强度，变形率为 55.93%，抗压强度为 2153.7 兆帕。Fe50Mn30Co10Cr10 涂层的断裂机理是透晶断裂和韧性断裂。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Surface & Coatings Technology 工程技术-材料科学：膜

CiteScore

10.00

自引率

11.10%

发文量

921

审稿时长

19 days

期刊介绍： Surface and Coatings Technology is an international archival journal publishing scientific papers on significant developments in surface and interface engineering to modify and improve the surface properties of materials for protection in demanding contact conditions or aggressive environments, or for enhanced functional performance. Contributions range from original scientific articles concerned with fundamental and applied aspects of research or direct applications of metallic, inorganic, organic and composite coatings, to invited reviews of current technology in specific areas. Papers submitted to this journal are expected to be in line with the following aspects in processes, and properties/performance: A. Processes: Physical and chemical vapour deposition techniques, thermal and plasma spraying, surface modification by directed energy techniques such as ion, electron and laser beams, thermo-chemical treatment, wet chemical and electrochemical processes such as plating, sol-gel coating, anodization, plasma electrolytic oxidation, etc., but excluding painting. B. Properties/performance: friction performance, wear resistance (e.g., abrasion, erosion, fretting, etc), corrosion and oxidation resistance, thermal protection, diffusion resistance, hydrophilicity/hydrophobicity, and properties relevant to smart materials behaviour and enhanced multifunctional performance for environmental, energy and medical applications, but excluding device aspects.