Experimental investigation and parametric optimization for minimization of dilution during direct laser metal deposition of tungsten carbide and cobalt powder mixture on SS304 substrate

IF 4.6 2区工程技术 Q2 ENGINEERING, CHEMICAL Powder Technology Pub Date : 2021-09-01 DOI:10.1016/j.powtec.2021.05.056

Anitesh Kumar Singh , Kalinga Simant Bal , Dipanjan Dey , Amit Kumar Das , Abhishek Rudra Pal , Dilip Kumar Pratihar , Asimava Roy Choudhury

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引用次数: 15

Abstract

Optimization of process parameters for direct laser metal deposition of WC (88 wt%) and Co (12 wt%) mixed powder on SS304 substrate was carried out to obtain minimum dilution. The effect of process parameters on clad geometric elements was expressed through polynomial relations. A mathematical expression for dilution was developed in terms of clad geometric elements and then verified with experimentally obtained dilution. The regression analysis for each geometric element and dilution was also studied. To obtain an optimized set of process parameters four recently developed optimization algorithms were used, which was then followed by a confirmation test. Bonobo Optimizer algorithm was fast during the search for the globally optimum solution. A detailed macroscopic, microstructural, thermo-cycle and XRD analysis for the confirmed optimized run was carried out along with the comparison study. The hardness behaviour of clad tracks was also studied by comparing it with that of the substrate.

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在SS304衬底上直接激光沉积碳化钨和钴粉混合物稀释最小化的实验研究及参数优化

优化了在SS304衬底上直接激光沉积WC (88 wt%)和Co (12 wt%)混合粉末的工艺参数，以获得最小稀释。通过多项式关系表示工艺参数对覆层几何元件的影响。用包覆几何单元建立了稀释的数学表达式，并用实验得到的稀释值进行了验证。并对各几何元素和稀释度进行了回归分析。为了获得一组优化的工艺参数，使用了最近开发的四种优化算法，然后进行了验证测试。Bonobo优化算法在搜索全局最优解时速度较快。对确定的优化运行进行了详细的宏观、微观结构、热循环和XRD分析，并进行了对比研究。通过与衬底的硬度比较，研究了覆层轨道的硬度行为。

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来源期刊

Powder Technology 工程技术-工程：化工

CiteScore

9.90

自引率

15.40%

发文量

1047

审稿时长

46 days

期刊介绍： Powder Technology is an International Journal on the Science and Technology of Wet and Dry Particulate Systems. Powder Technology publishes papers on all aspects of the formation of particles and their characterisation and on the study of systems containing particulate solids. No limitation is imposed on the size of the particles, which may range from nanometre scale, as in pigments or aerosols, to that of mined or quarried materials. The following list of topics is not intended to be comprehensive, but rather to indicate typical subjects which fall within the scope of the journal's interests: Formation and synthesis of particles by precipitation and other methods. Modification of particles by agglomeration, coating, comminution and attrition. Characterisation of the size, shape, surface area, pore structure and strength of particles and agglomerates (including the origins and effects of inter particle forces). Packing, failure, flow and permeability of assemblies of particles. Particle-particle interactions and suspension rheology. Handling and processing operations such as slurry flow, fluidization, pneumatic conveying. Interactions between particles and their environment, including delivery of particulate products to the body. Applications of particle technology in production of pharmaceuticals, chemicals, foods, pigments, structural, and functional materials and in environmental and energy related matters. For materials-oriented contributions we are looking for articles revealing the effect of particle/powder characteristics (size, morphology and composition, in that order) on material performance or functionality and, ideally, comparison to any industrial standard.