Journal of Magnesium and Alloys最新文献_第10页

Deformation modes and fracture behaviors of peak-aged Mg-Gd-Y alloys with different grain structures 具有不同晶粒结构的峰值时效 Mg-Gd-Y 合金的变形模式和断裂行为

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

Journal of Magnesium and Alloys

Pub Date : 2024-10-01 DOI: 10.1016/j.jma.2023.09.020

Jiangli Ning , Jialiao Zhou , Bosong Gao , Chunlei Zhang , Hailong Shi , Liansheng Chen , Xiaojun Wang

The ductility and toughness of peak-aged (PA) Mg-RE alloys are significantly influenced by their grain structure characteristics. To investigate this issue, we examined PA Mg-8.24Gd-2.68Y (wt.%) alloys with two distinct grain structures: an extruded-PA sample with dynamic recrystallized (DRXed) fine grains and coarse hot-worked grains, and an extrusion-solution treated and PA sample with grown large equiaxed grains. The results showed that the extruded-PA sample demonstrated a favorable combination of tensile strength (426 MPa) and ductility (7.0 %). Although intergranular microcracks nucleated in the DRXed region due to strain incompatibility, crack propagation was impeded by the DRXed fine grains, inducing intrinsic and extrinsic toughening mechanisms. On the other hand, the hot-worked grains in the extruded-PA sample initiated transgranular cracks after a relatively high strain, attributed to the strain partitioning effect, ultimately leading to failure. In comparison, the solution-treated-PA sample exhibited lower tensile strength and ductility (338 MPa and 3.7 %, respectively). Intergranular cracks nucleated in the CG sample before necking, and the readily formed critical crack, facilitated by the large grain size, exhibited unstable crack growth, resulting in premature failure. This work offers valuable insights for designing high-performance PA Mg-RE alloys and preventing premature failure in practical applications.

峰值时效 (PA) Mg-RE 合金的延展性和韧性受到其晶粒结构特征的显著影响。为了研究这个问题，我们研究了具有两种不同晶粒结构的 PA Mg-8.24Gd-2.68Y（重量百分比）合金：一种是具有动态再结晶（DRX）细晶粒和粗热加工晶粒的挤压-PA 样品，另一种是经过挤压-溶液处理并具有长大等轴晶粒的 PA 样品。结果表明，挤压-PA 样品具有良好的抗拉强度（426 兆帕）和延展性（7.0%）。虽然由于应变不相容性导致晶间微裂纹在 DRX 化区域成核，但 DRX 化细粒阻碍了裂纹的扩展，从而诱发了内在和外在增韧机制。另一方面，由于应变分配效应，挤压-PA 样品中的热加工晶粒在相对较高的应变后产生跨晶格裂纹，最终导致破坏。相比之下，经过溶液处理的聚苯乙烯样品的抗拉强度和延展性较低（分别为 338 兆帕和 3.7%）。CG 样品中的晶间裂纹在缩颈之前就已成核，而由于晶粒尺寸较大，容易形成的临界裂纹表现出不稳定的裂纹生长，导致过早失效。这项研究为设计高性能 PA Mg-RE 合金以及在实际应用中防止过早失效提供了宝贵的见解。

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引用次数: 0

Recent progress in protective coatings against corrosion upon magnesium–lithium alloys: A critical review 镁锂合金防腐蚀保护涂层的最新进展：重要综述

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

Journal of Magnesium and Alloys

Pub Date : 2024-10-01 DOI: 10.1016/j.jma.2024.08.001

Yibo Ouyang , Enyu Guo , Xiao-Bo Chen , Huijun Kang , Zongning Chen , Tongmin Wang

Magnesium–lithium (Mg–Li) alloys are characteristic of great potentials for transformative weight reduction across diverse applications, from aeronautics and spacecraft to automobiles, electronics, and biomaterials. However, commercial services on Mg–Li alloys remain challenges given their poor corrosion resistance. This article critically reviews state-of-the-art progress of corrosion-resistant coatings for Mg–Li alloys, aiming to unlocking the full potential of such promising materials. The preparation techniques employed are summarized, the underlying protective mechanisms are elucidated, and coating performances are critically evaluated. This review further highlights key challenges for future exploration and development, and provides insightful perspectives towards emerging frontiers in this dynamic domain.

镁锂（Mg-Li）合金在航空航天、汽车、电子和生物材料等各种应用领域都具有巨大的减重潜力。然而，由于镁锂合金的耐腐蚀性较差，其商业服务仍面临挑战。本文对镁锂合金抗腐蚀涂层的最新进展进行了评述，旨在充分挖掘这种前景广阔的材料的潜力。文章总结了所采用的制备技术，阐明了潜在的保护机制，并对涂层性能进行了严格评估。本综述进一步强调了未来探索和发展所面临的关键挑战，并为这一动态领域的新兴前沿提供了深刻的视角。

引用次数: 0

A micro-alloyed Mg-Zn-Ge alloy as promising anode for primary Mg-air batteries 微合金Mg-Zn-Ge合金是镁空气电池极具应用前景的阳极

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

Journal of Magnesium and Alloys

Pub Date : 2024-10-01 DOI: 10.1016/j.jma.2023.05.004

Pingli Jiang , Depeng Li , Ruiqing Hou , Hong Yang , Junjie Yang , Shijie Zhu , Liguo Wang , Shaokang Guan

Alloying is one of the effective approaches to boost the discharge property of magnesium (Mg) anodes for primary Mg-air batteries and recently micro-alloying is highly recommended at the aim of developing advanced primary Mg system. In this study, micro-alloyed extruded Mg0.5Zn0.2Ge (in wt.%) alloy is evaluated as an anode candidate for primary Mg-air batteries in both half-cell and Mg-air full cell configurations, in comparison with commercially accepted Mg anodes, typified by as-cast HP Mg and extruded AZ31 alloy. The corrosion behavior at open circuit potential (OCP) condition of the three materials is also compared through electrochemical tests. Mg0.5Zn0.2Ge alloy displays the most negative OCP value and the highest corrosion resistance at OCP. During discharge, Mg0.5Zn0.2Ge anode exhibits low wasteful-discharge rate and homogeneous dissolution that gives rise to the absence of “chunk effect”. Consequently, the anodic efficiency and specific capacity of Mg0.5Zn0.2Ge anode are superior to those of HP Mg and AZ31 anodes, e.g. 57.3% and 1257 mAh g⁻¹ at 1 mA cm⁻². Additionally, Mg-air battery based on Mg0.5Zn0.2Ge anode offers higher cell voltage and specific energy than those assembled with HP Mg and AZ31 anodes, which can be further optimized by addition of electrolyte additives. Therefore, micro-alloyed Mg0.5Zn0.2Ge alloy can serve as a promising candidate for anode material of primary Mg-air batteries.

合金化是提高原生镁-空气电池镁（Mg）阳极放电性能的有效方法之一，最近，为了开发先进的原生镁系统，微合金化备受推崇。本研究将微合金挤压 Mg0.5Zn0.2Ge（重量百分比）合金作为一次镁-空气电池的候选阳极，在半电池和镁-空气全电池两种配置下进行评估。此外，还通过电化学测试比较了三种材料在开路电位（OCP）条件下的腐蚀行为。Mg0.5Zn0.2Ge 合金的开路电位负值最大，开路电位下的耐腐蚀性最高。在放电过程中，Mg0.5Zn0.2Ge 阳极表现出较低的放电浪费率和均匀的溶解度，因而不存在 "大块效应"。因此，Mg0.5Zn0.2Ge 阳极的阳极效率和比容量优于 HP Mg 和 AZ31 阳极，例如在 1 mA cm-2 时分别为 57.3% 和 1257 mAh g-1。此外，基于 Mg0.5Zn0.2Ge 阳极的镁-空气电池比使用 HP Mg 和 AZ31 阳极组装的电池具有更高的电池电压和比能量，这可以通过添加电解质添加剂进一步优化。因此，微合金化的 Mg0.5Zn0.2Ge 合金有望成为一次镁空气电池的阳极材料。

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引用次数: 0

Sustainable magnesium recycling: Insights into grain refinement through plastic deformation-assisted solid-state recycling (SSR) 可持续的镁回收利用：通过塑性变形辅助固态回收（SSR）实现晶粒细化的启示

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

Journal of Magnesium and Alloys

Pub Date : 2024-10-01 DOI: 10.1016/j.jma.2024.10.016

E. Taherkhani , M.R. Sabour , G. Faraji

Magnesium, the lightest structural metal, is increasingly adopted in various industries, particularly automotive and aerospace, underscores the economic importance of magnesium due to its high specific strength, stiffness, and excellent damping properties. However, the primary production of magnesium is highly energy-intensive and environmentally challenging. Solid-state recycling via plastic deformation techniques offers a promising alternative to manufacturing ultrafine-grained magnesium samples with superior characteristics. Given the lack of reviews on the mechanisms of grain refinement during the solid-state recycling of magnesium and its alloys, this paper addresses this gap by offering detailed insights. Through an extensive review of relevant literature, the current paper highlights how plastic deformation techniques facilitate grain refinement during the solid-state recycling of magnesium chips and wastes. In this regard, a grain refinement mechanism during SSR of Mg and its alloys is proposed by the authors, to guide future advancements in sustainable magnesium recycling technologies. This will clarify the benefits of solid-state recycling over traditional methods, such as higher metal yields and better mechanical properties.

镁是最轻的结构金属，因其高比强度、刚度和出色的阻尼特性，越来越多地被各行各业所采用，尤其是汽车和航空航天业。然而，镁的初级生产是高能耗和环境挑战。通过塑性变形技术进行固态回收，为制造具有优异特性的超细粒度镁样品提供了一种很有前景的替代方法。鉴于缺乏对镁及其合金固态回收过程中晶粒细化机制的综述，本文通过提供详细的见解来填补这一空白。通过广泛查阅相关文献，本文重点介绍了塑性变形技术如何在镁屑和废料的固态回收过程中促进晶粒细化。为此，作者提出了镁及其合金固态回收过程中的晶粒细化机制，以指导未来可持续镁回收技术的发展。这将阐明固态回收与传统方法相比的优势，如更高的金属产量和更好的机械性能。

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引用次数: 0

Effects of heterogeneous microstructure evolution on the tensile and fracture toughness properties of extruded AZ31B alloys 异质微结构演化对挤压 AZ31B 合金拉伸和断裂韧性性能的影响

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

Journal of Magnesium and Alloys

Pub Date : 2024-10-01 DOI: 10.1016/j.jma.2024.10.005

ShengXiong Tang , Soya Nishimoto , Koji Hagihara , Michiaki Yamasaki

This study aims to investigate the extrusion temperature effects on the development of heterogeneous microstructures and mechanical properties, focusing on their impact on the fracture toughness of AZ31B alloys. Magnesium AZ31B (Mg-3wt%Al-1wt%Zn) alloys with high strength and reasonable fracture toughness, featuring heterogeneous microstructures, were fabricated via warm/hot extrusion at temperatures ranging from 523 to 723 K. The AZ31B alloy extruded at 523 K was bimodally grained into coarse worked grains with high Kernel average misorientation (KAM) values and fine dynamically recrystallized (DRXed) grains (< 10 µm) with intermediate KAM values. The 523 K-extruded alloy exhibited a high tensile yield strength of ∼280 MPa and fracture toughness K_JIC of ∼26 MPa·m^1/2. Conversely, the 723 K-extruded AZ31B alloy was trimodally grained into a small amount of worked grains, fine DRXed grains, and coarse DRXed grains (> 10 µm) with low KAM values. The 723 K-extruded alloy exhibited low tensile yield strength but a high K_JIC value of ∼36 MPa·m^1/2 owing to the high energy dissipation for crack extension in the coarse DRXed grains.

本研究旨在探讨挤压温度对异质微观结构和机械性能发展的影响，重点关注其对 AZ31B 合金断裂韧性的影响。在 523 至 723 K 的温度范围内，通过温/热挤压制造了具有高强度和合理断裂韧性的镁 AZ31B（Mg-3wt%Al-1wt%Zn）合金，该合金具有异质微观结构。在 523 K 温度下挤压的 AZ31B 合金具有双峰晶粒，即具有较高核平均取向偏差（KAM）值的粗加工晶粒和具有中等 KAM 值的精细动态再结晶（DRXed）晶粒（10 µm）。523 K 挤压合金的拉伸屈服强度高达 280 兆帕，断裂韧性 KJIC 为 26 兆帕-m1/2。相反，723 K 挤压 AZ31B 合金的晶粒呈三向分布，分为少量加工晶粒、细 DRX 化晶粒和粗 DRX 化晶粒（> 10 µm），KAM 值较低。723 K 挤压合金的拉伸屈服强度较低，但 KJIC 值却很高，达到 ∼ 36 MPa-m1/2，原因是粗 DRX 晶粒中裂纹扩展的能量耗散较高。

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引用次数: 0

Alternative predictive approach for low-cycle fatigue life based on machine learning and energy-based modeling 基于机器学习和能量建模的低循环疲劳寿命替代预测方法

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

Journal of Magnesium and Alloys

Pub Date : 2024-10-01 DOI: 10.1016/j.jma.2024.10.014

Jinyeong Yu , Seong Ho Lee , Seho Cheon , Sung Hyuk Park , Taekyung Lee

Mg alloys are extremely valuable in the automotive and aerospace industries because of their lightweight properties and excellent machinability. The applications in these industries necessitate the accurate prediction of fatigue life under cyclic loading. However, this is challenging for many wrought Mg alloys owing to their pronounced plastic anisotropy. Conventional predictive methods such as the Coffin-Manson equation require manual parameter adjustment for different conditions, thus limiting their applicability. Accordingly, a novel predictive model for low-cycle fatigue (LCF) life that combines machine learning (ML) with an energy-based physical model, referred to as the hybrid ML/E model, is proposed herein. The hybrid ML/E model leverages a substantial hysteresis-loop dataset generated from LCF tests on a rolled AZ31 Mg alloy to effectively predict fatigue life. The proposed approach addresses the inherent challenges of small fatigue datasets, hysteresis-loop perception, and algorithm selection. The hybrid ML/E model demonstrates superior predictive accuracy and robustness in various loading directions, based on validation against conventional methods. The integration of ML and physical principles offers a unified framework for the LCF life prediction of anisotropic materials and represents a significant advancement for industrial applications.

镁合金因其轻质特性和出色的可加工性，在汽车和航空航天工业中具有极高的价值。这些行业的应用要求对循环载荷下的疲劳寿命进行准确预测。然而，由于许多锻轧镁合金具有明显的塑性各向异性，这对它们来说具有挑战性。传统的预测方法（如 Coffin-Manson 方程）需要根据不同条件手动调整参数，因此限制了其适用性。因此，本文提出了一种结合机器学习（ML）和基于能量的物理模型的新型低循环疲劳（LCF）寿命预测模型，称为混合 ML/E 模型。混合 ML/E 模型利用从轧制 AZ31 Mg 合金的 LCF 测试中生成的大量磁滞环数据集来有效预测疲劳寿命。所提出的方法解决了小型疲劳数据集、滞后环感知和算法选择等固有难题。根据对传统方法的验证，混合 ML/E 模型在各种加载方向上都表现出卓越的预测精度和稳健性。ML 与物理原理的整合为各向异性材料的 LCF 寿命预测提供了一个统一的框架，是工业应用领域的一大进步。

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引用次数: 0

Maximizing precipitation hardening effect enables ultrahigh strength in a coarse-grained Mg-13Gd forging alloy 最大限度地提高沉淀硬化效果，使粗晶Mg-13Gd锻造合金具有超高强度

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

Journal of Magnesium and Alloys

Pub Date : 2024-10-01 DOI: 10.1016/j.jma.2023.04.003

Dongdong Zhang , Hucheng Pan , Zhihao Zeng , Weineng Tang , Jingren Li , Hongbo Xie , Rongguang Li , Yuping Ren , Gaowu Qin

In this work, a new strategy for achieving ultrahigh strength in the coarse-grained Mg-Gd binary alloy via utilizing recrystallization texture hardening and maximizing precipitation strengthening has been reported. Forging at a much high temperature suppresses dynamic precipitation, enabling the super-saturation of Gd atoms in Mg matrix. This facilitates the formation of fully recrystallized grains with strong texture and induces an exceptionally high precipitation hardening in the following ageing. Therefore, the forged Mg-13Gd sample exhibited extraordinary tensile yield strength (TYS) of ∼430 MPa, in which ageing-induced TYS increment exceeds ∼210 MPa, as the highest record so far in precipitation-hardened Mg communities. These results provide important theoretical guidance for fabricating the large section and high-strength Mg components for industrial applications.

在这项工作中，报告了一种通过利用再结晶质地硬化和最大化沉淀强化实现粗晶粒镁钆二元合金超高强度的新策略。高温锻造可抑制动态沉淀，使镁基体中的钆原子达到超饱和状态。这有利于形成具有较强质地的完全再结晶晶粒，并在随后的时效过程中产生极高的沉淀硬化。因此，锻造的 Mg-13Gd 样品表现出了∼430 兆帕的超常拉伸屈服强度（TYS），其中时效引起的 TYS 增量超过了∼210 兆帕，是迄今为止沉淀硬化镁群落的最高记录。这些结果为制造工业应用的大截面高强度镁部件提供了重要的理论指导。

引用次数: 0

First-principles study on the interfacial bonding strength and segregation at Mg/MgZn2 matrix interface Mg/MgZn2基体界面结合强度和偏析的第一性原理研究

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

Journal of Magnesium and Alloys

Pub Date : 2024-10-01 DOI: 10.1016/j.jma.2022.12.010

Longke Bao , Peng Du , Shengkun Xi , Cuiping Wang , Kaihong Zheng , Rongpei Shi , Guoqiang Xie , Xingjun Liu

To understand the interface characteristics between the precipitate β₂′ and the Mg matrix, and thus guide the development of new Mg-Zn alloys, we investigated the atomic interface structure, work of adhesion (W_ad), and interfacial energy (γ) of Mg(0001)/β₂'(MgZn₂)(0001) interface, as well as the effect of segregation behavior of the introduced transition metal atoms (3d, 4d and 5d) on interfacial bonding strength. The calculated works of adhesion and interfacial energies dementated that the Zn2-terminated MT+HCP configuration is the most stable structure for all considered models. Take the Zn2- MT+HCP interface as the research object, estimated segregated energies (E_seg) reveal that added transition metal atoms prefer to segregate at Mg-I and Mg-II sites. The predicted W_ad and charge density difference results reveal that the segregation of alloying additives employed may all strengthen Mg(0001)/MgZn₂(0001) interface, with the enhancement effect of Os, Re, Tc, W, and Ru at the Mg-II site being the most pronounced.

为了了解沉淀β2′与镁基体之间的界面特性，从而指导新型镁锌合金的开发，我们研究了 Mg（0001）/β2'（MgZn2）（0001）界面的原子界面结构、粘附功（Wad）和界面能（γ），以及引入的过渡金属原子（3d、4d 和 5d）的偏析行为对界面结合强度的影响。附着力和界面能的计算结果表明，在所有考虑的模型中，Zn2-端MT+HCP构型是最稳定的结构。以 Zn2- MT+HCP 界面为研究对象，估算的分离能（Eseg）显示，添加的过渡金属原子更倾向于分离在 Mg-I 和 Mg-II 位点。预测的 Wad 和电荷密度差结果表明，所采用的合金添加剂的偏析都可能强化 Mg(0001)/MgZn2(0001)界面，其中 Os、Re、Tc、W 和 Ru 对 Mg-II 位点的强化作用最为明显。

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引用次数: 0

A novel oxidation-resistible Mg@Ni foam material for safe, efficient, and controllable hydrogen generation 一种新型抗氧化材料Mg@Ni用于安全、高效和可控制氢的泡沫材料

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

Journal of Magnesium and Alloys

Pub Date : 2024-10-01 DOI: 10.1016/j.jma.2023.06.011

Jingru Liu , Busheng Zhang , Haiping Yu , Tengfei Li , Mingjun Hu , Jun Yang

As a promising in-situ hydrogen generation material, magnesium (Mg) has been seeking a promotion in its hydrogen generation property. Increasing the specific surface area, for example, replacing the Mg bulk using Mg powder, can greatly increase the hydrogen generation property, but it brings a high explosion risk, a difficulty in controlling the hydrogen generation, and an oxidation problem. In this work, we prepare a novel Mg@Ni foam material with Mg deposits on Ni foam by a physical vapor deposition method. The Ni foam not only increases the hydrolysis reaction areas of Mg by improving its specific surface area, but also kinetically accelerates the hydrolysis reaction rate of Mg by forming a uniform Mg-Ni galvanic cell. As a result, the Mg@Ni foam material realizes a near-theoretical hydrogen generation amount of Mg and a hydrogen generation rate significantly higher than those realized by the bulk Mg-based materials. The Mg@Ni foam material with the excellent hydrogen generation property is also free from explosion risk, easy to be controlled, and resistible to oxidation. A hydrogen fuel cell powered by the hydrogen generated by the Mg@Ni foam material can yield a steady voltage and run a small car for a long distance.

作为一种前景广阔的原位制氢材料，镁（Mg）一直在寻求提高其制氢性能。增加比表面积，例如用镁粉代替镁块，可以大大提高制氢性能，但会带来爆炸风险高、制氢控制困难和氧化问题。在这项工作中，我们采用物理气相沉积法制备了一种新型 Mg@Ni 泡沫材料，将镁沉积在镍泡沫上。镍泡沫不仅通过提高镁的比表面积增加了镁的水解反应面积，还通过形成均匀的镁镍电化池加快了镁的水解反应速率。因此，Mg@Ni 泡沫材料的镁制氢量接近理论值，制氢速率也明显高于块状镁基材料。具有优异制氢性能的 Mg@Ni 泡沫材料还具有无爆炸危险、易于控制和抗氧化的特点。由泡沫镁@镍材料产生的氢气驱动的氢燃料电池可以产生稳定的电压，并能让一辆小型汽车行驶很长的距离。

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引用次数: 0

Interfacial microstructure evolution for coordinated deformation of Mg/Al composite plates by asymmetrical rolling with differential temperature rolls 温差轧辊不对称轧制Mg/Al复合材料板协调变形界面组织演变

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

Journal of Magnesium and Alloys

Pub Date : 2024-10-01 DOI: 10.1016/j.jma.2023.04.012

Junyi Lei , Lifeng Ma , Zhihui Cai , Weitao Jia , Yuan Yuan , Hucheng Pan , Hongbo Xie

In this work, Mg/Al composite plates with different thickness ratios were prepared by the asymmetrical rolling process with differential temperature rolls and isothermal symmetrical rolling. Microstructural evolution and mechanical properties of matrix and composite materials with different thicknesses were analyzed. Influence of thickness ratios on the coordinated deformability of heterogeneous metals and interface toughness under the action of temperature gradient and shear force was investigated. Results show that the relative deformation rates of matrix and composite materials converge gradually under the influence of work hardening of Mg/Al layer. The Mg layer is mainly DRXed grains and texture intensity gradually weakens with increasing thickness ratio. The Al layer is mostly dominated by subgrains and deformed grains, which have a strong correlation with thickness ratio. Strength and plasticity of composites first increase and then decrease with increasing thickness ratio. Fracture of composite plate occurs in intermetallic compounds (IMCs). Thickness of IMCs has a strong positive correlation with thickness ratio. When the thickness ratio of AZ31B/Al6061 for 5, the relative thickness of IMCs is the largest and the relative bonding strength is the smallest. When the thickness ratio of AZ31B/Al6061 for 3, there is no element aggregation in IMCs, and the comprehensive mechanical properties of composite plate are comparatively better.

在这项工作中，采用温差轧辊不对称轧制工艺和等温对称轧制工艺制备了不同厚度比的镁铝复合板。分析了不同厚度基体和复合材料的微观结构演变和力学性能。研究了在温度梯度和剪切力作用下，厚度比对异质金属协调变形能力和界面韧性的影响。结果表明，在镁/铝层加工硬化的影响下，基体和复合材料的相对变形率逐渐趋同。镁层主要是 DRX 化晶粒，纹理强度随着厚度比的增加而逐渐减弱。铝层主要是亚晶粒和变形晶粒，与厚度比密切相关。随着厚度比的增加，复合材料的强度和塑性先增大后减小。复合板的断裂发生在金属间化合物（IMC）中。金属间化合物的厚度与厚度比有很强的正相关性。当 AZ31B/Al6061 的厚度比为 5 时，IMC 的相对厚度最大，相对结合强度最小。当 AZ31B/Al6061 的厚度比为 3 时，IMC 中没有元素聚集，复合板的综合力学性能相对较好。

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引用次数: 0