通过多向锻造调制块状LPSO颗粒降低锻造Mg-8.5Gd-2.5Y-1.5Zn-0.5Zr合金的力学各向异性

IF 15.8 1区材料科学 Q1 METALLURGY & METALLURGICAL ENGINEERING

Journal of Magnesium and Alloys Pub Date : 2025-04-01 DOI:10.1016/j.jma.2022.10.024

Jiyu Li, Fulin Wang, Jian Zeng, Chaoyu Zhao, Chen Qian, Fenghua Wang, Shuai Dong, Li Jin, Jie Dong

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引用次数: 0

摘要

通过单向和多向锻造对块状LPSO颗粒进行了调制，研究了块状LPSO颗粒对Mg-8.5Gd-2.5Y-1.5Zn-0.5Zr合金锻件力学性能各向异性的影响。建立了温度范围为430 ~ 500℃、应变速率范围为0.001 ~ 0.06 s−1、稳定且节能的三维加工图谱，用于指导单向锻造（SDF）和多向锻造（MDF）实验。拉伸力学性能表明，块状LPSO颗粒对材料的力学各向异性，尤其是伸长率各向异性有影响。经过MDF处理的块状LPSO颗粒形状更规则，尺寸更小，分布均匀，这是伸长率各向异性较低的原因。此外，MDF部件的时效硬化能力高于SDF部件。

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Decreasing the mechanical anisotropy of the forged Mg-8.5Gd-2.5Y-1.5Zn-0.5Zr alloy by modulating blocky LPSO particles using multi-directional forging

The blocky LPSO particles were modulated by single-directional and multi-directional forging, and the effect of blocky LPSO particles on the anisotropy of mechanical properties of Mg-8.5Gd-2.5Y-1.5Zn-0.5Zr alloy forged parts was investigated. In the present work, 3D processing maps are established, and the forming domain that is both stable and power efficient is in the temperature range from 430 to 500 °C and strain rate range from 0.001 to 0.06 s ^{− 1}, which is used to guide the single-directional forging (SDF) and multi-directional forging (MDF) experiments. The tensile mechanical properties reveal that the blocky LPSO particles have an influence on the mechanical anisotropy, especially in terms of the elongation anisotropy. The blocky LPSO particles after the MDF process have a more regular shape and smaller size and are homogeneously distributed, which is responsible for the low anisotropy of the elongation. In addition, the age-hardening capability of the MDF part is higher than that of the SDF part.

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来源期刊

Journal of Magnesium and Alloys Engineering-Mechanics of Materials

CiteScore

20.20

自引率

14.80%

发文量

审稿时长

59 days

期刊介绍： The Journal of Magnesium and Alloys serves as a global platform for both theoretical and experimental studies in magnesium science and engineering. It welcomes submissions investigating various scientific and engineering factors impacting the metallurgy, processing, microstructure, properties, and applications of magnesium and alloys. The journal covers all aspects of magnesium and alloy research, including raw materials, alloy casting, extrusion and deformation, corrosion and surface treatment, joining and machining, simulation and modeling, microstructure evolution and mechanical properties, new alloy development, magnesium-based composites, bio-materials and energy materials, applications, and recycling.