A high-strength and high-elongation soluble Mg-Gd-Y-Zn-Zr-Cu alloy for fracturing tool fabrication

IF 2.7 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Letters Pub Date : 2025-06-19 DOI:10.1016/j.matlet.2025.138962

Jinshuo Tang , Fan Yang , Yunteng Liu , Meifang Wang , Jixue Zhou

引用次数: 0

Abstract

Developing soluble magnesium alloys with excellent comprehensive mechanical properties is key for shale oil/gas fracturing tools. In this study, Mg-7.3Gd-3.0Y-1.0Zn-0.2Zr-xCu (x = 0.2–1.8 wt%) alloys were prepared via direct cooling casting and extrusion. They exhibited a tensile yield strength (TYS) of over 325 MPa and an elongation (EL) of over 13.8 %, mainly due to their fine grain size (≈50 µm) from dynamic recrystallization at the relatively low extrusion temperature (400 °C). As Cu content rose, corrosion rate increased, yet mechanical properties stayed stable. The Mg-7.3Gd-3.0Y-1.0Zn-0.2Zr-1.2Cu alloy showed the best properties: a TYS of 349.6 MPa, an EL of 14.3 %, and a corrosion rate of 783.7 mm/year in 3 wt% KCl at 93 °C.

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一种用于压裂工具制造的高强高延伸可溶性Mg-Gd-Y-Zn-Zr-Cu合金

开发具有优异综合力学性能的可溶镁合金是页岩油气压裂工具的关键。本研究通过直冷铸造和挤压制备了Mg-7.3Gd-3.0Y-1.0Zn-0.2Zr-xCu （x = 0.2-1.8 wt%）合金。它们的抗拉屈服强度（TYS）超过325 MPa，伸长率（EL）超过13.8%，这主要是由于在相对较低的挤压温度（400℃）下动态再结晶形成的细晶粒尺寸（≈50µm）。随着Cu含量的增加，腐蚀速率增加，但力学性能保持稳定。Mg-7.3Gd-3.0Y-1.0Zn-0.2Zr-1.2Cu合金在93℃下，在3wt % KCl条件下，TYS为349.6 MPa， EL为14.3%，腐蚀速率为783.7 mm/年。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Materials Letters 工程技术-材料科学：综合

CiteScore

5.60

自引率

3.30%

发文量

1948

审稿时长

50 days

期刊介绍： Materials Letters has an open access mirror journal Materials Letters: X, sharing the same aims and scope, editorial team, submission system and rigorous peer review. Materials Letters is dedicated to publishing novel, cutting edge reports of broad interest to the materials community. The journal provides a forum for materials scientists and engineers, physicists, and chemists to rapidly communicate on the most important topics in the field of materials. Contributions include, but are not limited to, a variety of topics such as: • Materials - Metals and alloys, amorphous solids, ceramics, composites, polymers, semiconductors • Applications - Structural, opto-electronic, magnetic, medical, MEMS, sensors, smart • Characterization - Analytical, microscopy, scanning probes, nanoscopic, optical, electrical, magnetic, acoustic, spectroscopic, diffraction • Novel Materials - Micro and nanostructures (nanowires, nanotubes, nanoparticles), nanocomposites, thin films, superlattices, quantum dots. • Processing - Crystal growth, thin film processing, sol-gel processing, mechanical processing, assembly, nanocrystalline processing. • Properties - Mechanical, magnetic, optical, electrical, ferroelectric, thermal, interfacial, transport, thermodynamic • Synthesis - Quenching, solid state, solidification, solution synthesis, vapor deposition, high pressure, explosive