粉末成分特征温度和输入能量密度对选择性激光熔化法生产的镍基和钴基耐热合金微观结构和内部应力的影响。第二部分

IF 0.6 4区材料科学 Q4 METALLURGY & METALLURGICAL ENGINEERING Metal Science and Heat Treatment Pub Date : 2024-04-20 DOI:10.1007/s11041-024-00994-7

A. G. Evgenov, N. V. Petrushin, P. N. Medvedev, I. A. Galushka, S. V. Shurtakov

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摘要

通过对耐热镍合金 VZh159 的选择性激光熔化（SLM）研究表明，在能量密度不变的情况下，决定纹理和内应力的关键因素是孵化距离。随着曝光率的多次增加和孵化距离的减小，微孔比例呈指数增长，这是由于激光辐射在轨迹重叠区的反射导致耗散增强。

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Effect of Powder Composition Characteristic Temperatures And Input Energy Density on Microstructure and Internal Stresses of Nickel- and Cobalt-Based Heat-Resistant Alloys Produced by Selective Laser Melting. Part 2

Selective laser melting (SLM) of heat-resistant nickel alloy VZh159 is used to show that at constant energy density the key factor determining the texture and the internal stresses is the hatching distance. At multiple increase in the exposure rate and decrease in the hatching distance, the micropore proportion increases exponentially due to enhancement of the dissipation of the laser radiation caused by reflection in the track overlapping zone.

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来源期刊

Metal Science and Heat Treatment 工程技术-冶金工程

CiteScore

1.20

自引率

16.70%

发文量

102

审稿时长

4-8 weeks

期刊介绍： Metal Science and Heat Treatment presents new fundamental and practical research in physical metallurgy, heat treatment equipment, and surface engineering. Topics covered include: New structural, high temperature, tool and precision steels; Cold-resistant, corrosion-resistant and radiation-resistant steels; Steels with rapid decline of induced properties; Alloys with shape memory effect; Bulk-amorphyzable metal alloys; Microcrystalline alloys; Nano materials and foam materials for medical use.