选择性激光熔化Al-6.7Mg-0.3Sc-0.25Zr合金的组织和力学性能

IF 0.3 Q4 METALLURGY & METALLURGICAL ENGINEERING

Russian Metallurgy (Metally) Pub Date : 2025-09-23 DOI:10.1134/S0036029525700119

M. V. Gerov, A. G. Kolmakov, D. V. Prosvirnin, N. S. Zhdanova, M. E. Prutskov, S. V. Pivovarchik

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引用次数: 0

摘要

摘要：研究了选择性激光熔化（SLM）制备的Al-6.7Mg-0.3Sc-0.25Zr合金样品（相对于构建平台水平和垂直）在360°C下时效5 h后的组织和力学性能（静态和疲劳载荷下）。当激光功率为800 W，扫描速度为1500 mm/s时，合成的样品密度最高，达到99.88%。这些试样的力学性能几乎不受浇筑方向的影响，其极限抗拉强度σu = 420 ~ 430 MPa；相对伸长率，δ = 5-8%；疲劳极限σR = 130 ~ 140 MPa。

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Structure and Mechanical Properties of a Selective Laser Melted Al–6.7Mg–0.3Sc–0.25Zr Alloy

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Structure and Mechanical Properties of a Selective Laser Melted Al–6.7Mg–0.3Sc–0.25Zr Alloy

Abstract—The structure and mechanical properties (under static and fatigue loading) of Al–6.7Mg–0.3Sc–0.25Zr alloy samples synthesized by selective laser melting (SLM) horizontally and vertically relative to a build platform and subsequently aged at 360°C for 5 h are studied. The density of the synthesized samples is found to be maximal (99.88%) at a laser power of 800 W and a scanning speed of 1500 mm/s. The mechanical properties of such samples are almost independent of the build direction and are as follows: the ultimate tensile strength is σ_u = 420–430 MPa; the relative elongation, δ = 5–8%; and the fatigue limit, σ_R = 130–140 MPa.

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来源期刊

Russian Metallurgy (Metally) METALLURGY & METALLURGICAL ENGINEERING-

CiteScore

0.70

自引率

25.00%

发文量

140

期刊介绍： Russian Metallurgy (Metally) publishes results of original experimental and theoretical research in the form of reviews and regular articles devoted to topical problems of metallurgy, physical metallurgy, and treatment of ferrous, nonferrous, rare, and other metals and alloys, intermetallic compounds, and metallic composite materials. The journal focuses on physicochemical properties of metallurgical materials (ores, slags, matters, and melts of metals and alloys); physicochemical processes (thermodynamics and kinetics of pyrometallurgical, hydrometallurgical, electrochemical, and other processes); theoretical metallurgy; metal forming; thermoplastic and thermochemical treatment; computation and experimental determination of phase diagrams and thermokinetic diagrams; mechanisms and kinetics of phase transitions in metallic materials; relations between the chemical composition, phase and structural states of materials and their physicochemical and service properties; interaction between metallic materials and external media; and effects of radiation on these materials.