钛合金生长过程中的结构化机制

IF 0.9 4区 材料科学 Q3 MATERIALS SCIENCE, CERAMICS
A. A. Skrebtsov, J. I. Kononenko, O. V. Lysytsia, A. V. Kononenko
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引用次数: 0

摘要

增材制造是一种生产零件的工艺,涉及在平面或轴向基底上逐步添加材料。这种制造方法也被称为 "生长",因为产品是通过不断增加材料层直至完整形成的。增材制造材料和技术都非常现代和实用。利用这些技术,可以用各种能量熔化粉末来生产材料。在这种情况下,结构化机制几乎是未知的。利用快速成型技术,在 VT20 合金基板上制备了 VT1-0 合金粉末样品,在 VT1-0 合金基板上制备了 VT20 合金粉末样品。研究了从沉积材料的不同区域切割出的样品的结构,并测量了它们的显微硬度。结果表明了沉积材料的结构与显微硬度之间的关系。提出了通过钛粉沉积实现钛材料结构化的机制。提出了在金属中形成孔隙的机制。结构化过程的特点是掺杂元素在沉积金属和基底中的重新分布,这一点可以通过显微硬度的变化得到证明。显微硬度从基底金属特有的水平到沉积金属固有的显微硬度不等。金属样品生长过程中的温度梯度不均匀。这导致金属结构成分的尺寸发生变化。粉末逐层熔融,孔隙的形成取决于粉末颗粒的大小。与较细粉末形成的孔隙相比,较大颗粒形成的孔隙更大。两种沉积方法的实验过程是一致的。不同之处在于基本金属,特别是其化学成分。所提出的机制加深了人们对钛合金粉末在添加生长(沉积)过程中结构化过程的总体理解。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Structurization Mechanism in the Growth of Titanium Alloys

Structurization Mechanism in the Growth of Titanium Alloys

Structurization Mechanism in the Growth of Titanium Alloys

Additive manufacturing is a process of producing parts, involving incremental addition of material onto a flat or axial substrate. This manufacturing option is also called ‘growth’ because the product is formed by continuously building up layers of material until it is complete. Additive materials and techniques are modern and relevant. Employing these techniques, materials can be produced with various types of energy to fuse powders. The structurization mechanism is virtually unknown in this case. Using additive manufacturing techniques, samples were prepared from the VT1-0 alloy powder on a VT20 alloy substrate and from the VT20 alloy powder on a VT1-0 alloy substrate. The structures of samples cut out from different areas of the deposited material were studied and their microhardness was measured. The relationship between the structure and microhardness in the deposited material was shown. A structurization mechanism for titanium material through the deposition of titanium powder was proposed. A mechanism for the formation of pores in the metal was suggested. The structurization process was characterized by the redistribution of doping elements in the deposited metal and the substrate, as evidenced by changes in microhardness. The microhardness varied from the level characteristic of the substrate metal to the microhardness inherent in the deposited metal. The temperature gradient during the growth of a metal sample was uneven. This led to changes in the size of the structural components in the metal. The powder was fused layer by layer, with the formation of pores depending on the powder particle size. Larger particles formed larger pores compared to those formed by finer powders. The processes established in the experiments were consistent for both deposition options. The difference resided in the base metal, specifically its chemical composition. The proposed mechanism enhanced the general understanding of the structurization processes during additive growth (deposition) of titanium alloys from their powders.

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来源期刊
Powder Metallurgy and Metal Ceramics
Powder Metallurgy and Metal Ceramics 工程技术-材料科学:硅酸盐
CiteScore
1.90
自引率
20.00%
发文量
43
审稿时长
6-12 weeks
期刊介绍: Powder Metallurgy and Metal Ceramics covers topics of the theory, manufacturing technology, and properties of powder; technology of forming processes; the technology of sintering, heat treatment, and thermo-chemical treatment; properties of sintered materials; and testing methods.
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