Materials Characterization最新文献_第5页

Direct laser powder bed fusion of duplex-austenitic stainless steel bimetallic structures: Microstructural evolution and robust interfacial bonding 双奥氏体不锈钢双金属组织的直接激光粉末床熔接：显微组织演变和坚固的界面结合

IF 5.5 2区材料科学 Q1 MATERIALS SCIENCE, CHARACTERIZATION & TESTING

Materials Characterization

Pub Date : 2026-02-02 DOI: 10.1016/j.matchar.2026.116111

Yali Zhang , Yongjian Fang , Jonghwan Suhr

Bimetallic structures (bimetals) composed of duplex stainless steels (DSSs) and austenitic stainless steels (ASSs) are promising for various applications. The brittle phases and coarse grains tend to form at the interface of DSS/ASS bimetals fabricated by conventional techniques. In contrast, the laser powder bed fusion (LPBF) technique enables the direct fabrication of DSS/ASS bimetals with strong interfacial bonding and allows the production of complex components. However, owing to its high cooling rates, a ferrite-dominated microstructure is formed in the DSS part. Meanwhile, the high Ni and Mo contents in conventional DSSs significantly increase their fabrication costs. To address these limitations, a novel fabrication route was developed to directly fabricate DSS/ASS bimetals with desired interfacial bonding. Low-cost DSS part was fabricated by the in-situ alloying of Ni-free high-N DSS and 304L ASS powders. To explore the interfacial microstructure and properties of the bimetals, 316L ASS powder was used to fabricate the ASS part using different process parameters. After optimized LPBF process, the resulting DSS/ASS bimetals exhibited a dual-phase DSS part and a single-phase ASS part. Notably, the interface was dominated by fine austenite grains and exhibited a high fraction of Σ3 twin boundaries (∼52.3%), which induced grain boundary strengthening and effectively suppressed microcrack initiation, thereby promoting strong metallurgical bonding. The DSS/316L bimetals exhibited a nearly defect-free interface, and the failure of the bimetals occurred on the ASS side. Overall, these results demonstrate a cost-effective strategy for directly fabricating DSS/ASS bimetals with strong interfacial bonding via the LPBF.

由双相不锈钢（DSSs）和奥氏体不锈钢（ASSs）组成的双金属结构（bimetals）具有广泛的应用前景。传统工艺制备的DSS/ASS双金属在界面处容易形成脆性相和粗晶粒。相比之下，激光粉末床熔融（LPBF）技术能够直接制造具有强界面键合的DSS/ASS双金属，并允许生产复杂部件。然而，由于其较高的冷却速率，在DSS部分形成了以铁素体为主的组织。同时，由于传统DSSs中Ni和Mo的高含量，使得DSSs的制造成本大大增加。为了解决这些限制，开发了一种新的制造路线，直接制造具有所需界面键合的DSS/ASS双金属。采用无ni高氮DSS与304L ASS粉末原位合金化制备了低成本DSS零件。为了研究双金属的界面微观结构和性能，采用316L聚丙烯酸甲酯粉末制备了不同工艺参数的聚丙烯酸甲酯零件。优化LPBF工艺后，得到的DSS/ASS双金属呈现出双相DSS部分和单相ASS部分。值得注意的是，界面以细小的奥氏体晶粒为主，并表现出高比例的Σ3孪晶界（~ 52.3%），这促进了晶界强化，有效抑制了微裂纹的萌生，从而促进了强的冶金结合。DSS/316L双金属的界面几乎没有缺陷，双金属的失效发生在ASS侧。总的来说，这些结果证明了通过LPBF直接制造具有强界面键合的DSS/ASS双金属的成本效益策略。

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引用次数: 0

Effect of hybrid warm-cold rolling on microstructure evolution and mechanical behavior of high manganese steels 冷热混合轧制对高锰钢组织演变和力学行为的影响

IF 5.5 2区材料科学 Q1 MATERIALS SCIENCE, CHARACTERIZATION & TESTING

Materials Characterization

Pub Date : 2026-02-02 DOI: 10.1016/j.matchar.2026.116115

Zekui Wang , Chen Chen , Xiangyang Qi , Dehong Wang , Zhinan Yang , Ting Zhao , Xiaoyong Feng , Bo Lv , Fucheng Zhang , Zehui Yan , Junzhi Li

Conventional pre-deformation enhances alloy strength but often significantly reduces ductility and toughness. Consequently, there remains significant demand to achieve high-strength and high-plasticity high manganese steels by manipulating the microstructure through optimized pre-deformation processes. This study systematically evaluates the hardness, tensile properties, and microstructural evolution of Mn13C1.2 and Mn18Cr7C0.6N0.2 steels under three pre-deformation processes with 30% total reduction: warm rolling, hybrid warm-cold rolling (15% warm rolling followed by 15% cold rolling), and cold rolling. Both steels displayed progressive enhancements in dislocation density, deformation twin density, yield/tensile strength, and hardness with increasing level of cold deformation, though at the expense of reduced elongation. The Mn13C1.2 steel exhibited pronounced dynamic strain aging, whereas the Mn18Cr7C0.6N0.2 steel showed no such effect. The interstitial C in the Mn13C1.2 steel promoted concurrent dynamic strain aging and deformation twinning, while the interstitial N in the Mn18Cr7C0.6N0.2 steel was more favorable to enhance dislocation accumulation and twin refinement. Notably, the Mn18Cr7C0.6N0.2 steel subjected to the hybrid rolling demonstrated a superior strain hardening capacity compared to cold rolling at an equivalent deformation level. This enhancement is attributed to the synergistic effects of high-density dislocation walls, Lomer-Cottrell locks, and persistent deformation twinning. Consequently, the material processed by this route achieved an optimized combination of mechanical properties, maintaining comparable hardness of 43.5 HRC and strength of 1377 MPa while exhibiting improved plasticity of 28.1%.

常规的预变形提高了合金的强度，但往往显著降低了延展性和韧性。因此，通过优化预变形工艺来控制高锰钢的微观组织，以获得高强度和高塑性的高锰钢，仍然是一个重要的需求。本研究系统地评价了Mn13C1.2和Mn18Cr7C0.6N0.2钢在三种预变形工艺下的硬度、拉伸性能和显微组织演变，三种预变形工艺分别为热轧、冷轧（15%热轧后15%冷轧）和冷轧。两种钢的位错密度、变形孪晶密度、屈服/抗拉强度和硬度都随着冷变形程度的增加而逐渐增强，但伸长率会降低。Mn13C1.2钢表现出明显的动态应变时效，而Mn18Cr7C0.6N0.2钢则没有这种效应。Mn13C1.2钢中的间隙C促进了动态应变时效和变形孪晶的同时发生，而Mn18Cr7C0.6N0.2钢中的间隙N更有利于位错积累和孪晶细化。值得注意的是，在同等变形水平下，与冷轧相比，经复合轧制的Mn18Cr7C0.6N0.2钢表现出更好的应变硬化能力。这种增强归因于高密度位错壁、lomo - cottrell锁和持续变形孪晶的协同效应。因此，经过该工艺处理的材料获得了最佳的力学性能组合，硬度为43.5 HRC，强度为1377 MPa，塑性提高了28.1%。

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引用次数: 0

Interfacial microstructure and strengthening mechanisms of Mo-Re alloy/AlN ceramic brazed joints Mo-Re合金/AlN陶瓷钎焊接头界面显微组织及强化机理

IF 5.5 2区材料科学 Q1 MATERIALS SCIENCE, CHARACTERIZATION & TESTING

Materials Characterization

Pub Date : 2026-02-02 DOI: 10.1016/j.matchar.2026.116108

Mengchun Fu , Panpan Lin , Yingyao Lu , Jing Li , Yang Zhang , Tiesong Lin , Peng He

Exploring ceramic/metal joints for reliable service at high temperature is a key issue to broaden the boundary of extreme applications. For the first time, the reliable brazing of AlN and Mo-Re was successfully achieved using a Ni-based MPEA filler in this work. The effects of brazing parameters on the microstructure evolution and mechanical properties of the joints were investigated. The joints brazed at 1150 °C for 15 min exhibited a typical interfacial microstructure composed of AlN ceramic/TiN/Ni(s,s) + λ(Mo₂Ni₃Si) + R(Mo₅₅Ni₄₂Si₃)/λ(Mo₂Ni₃Si)/δ(Mo₇Ni₇) + λ(Mo₂Ni₃Si)/Mo-Re alloy. The synergistic effect of (i) the in-situ generated Mo-Ni-Si ternary phase and the Ni-based solid solution as matrix, and (ii) the semi-coherent interface between TiN and AlN, improved the bonding strength and high-temperature service characteristics of AlN/Mo-Re joint. The maximum shear strength of the joint reached 129 MPa at room-temperature and 78 MPa at 1000 °C high-temperature, which is the maximum value that has been reported to meet the high-temperature service. This work provides a novel method for joining AlN ceramic and Mo-Re alloy, demonstrating potential for applications in extreme-environment electronic packaging.

探索在高温下可靠工作的陶瓷/金属接头是拓宽极端应用边界的关键问题。本文首次成功实现了镍基MPEA钎料对AlN和Mo-Re钎料的可靠钎焊。研究了钎焊参数对接头组织演变和力学性能的影响。在1150℃下钎焊15 min后，接头呈现出典型的AlN陶瓷/TiN/Ni(s,s) + λ(Mo2Ni3Si) + R(Mo55Ni42Si3)/λ(Mo2Ni3Si)/δ(Mo7Ni7) + λ(Mo2Ni3Si)/Mo-Re合金的界面微观结构。原位生成的Mo-Ni-Si三元相与ni基固溶体为基体，TiN与AlN之间的半相干界面的协同作用提高了AlN/Mo-Re接头的结合强度和高温使用特性。该接头的最大抗剪强度在室温下达到129 MPa，在1000℃高温下达到78 MPa，是目前报道的满足高温使用的最大值。这项工作提供了一种连接AlN陶瓷和Mo-Re合金的新方法，展示了在极端环境电子封装中的应用潜力。

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引用次数: 0

Corrigendum to “Correlation between microstructure evolution and intergranular corrosion of an Al-Cu-Li alloy under different cryogenic deformation amounts” [Materials Characterization, Volume 231 (2026), 115948]. “不同低温变形量下Al-Cu-Li合金微观组织演变与晶间腐蚀的相关性”[材料表征，vol . 231(2026), 115948]。

IF 5.5 2区材料科学 Q1 MATERIALS SCIENCE, CHARACTERIZATION & TESTING

Materials Characterization

Pub Date : 2026-02-01 DOI: 10.1016/j.matchar.2026.116002

Wenbo Zhu, Houjin Liu, Cailiu Yin, Xinjiang Zhang, Jieli Meng, Chunqiang Yi

引用次数: 0

Optimizing coating performance: Cold spray deposition of Al6061 powders on HPDC AZ91 alloy 优化涂层性能：在HPDC AZ91合金上冷喷涂沉积Al6061粉末

IF 5.5 2区材料科学 Q1 MATERIALS SCIENCE, CHARACTERIZATION & TESTING

Materials Characterization

Pub Date : 2026-02-01 DOI: 10.1016/j.matchar.2025.115950

Rajib Kalsar, Sridhar Niverty, Mayur Pole, James V. Haag, Tanvi Ajantiwalay, Vineet V. Joshi

Cold spray deposition of commercial aluminum alloy 6061 presents significant challenges in achieving high density, uniform microstructure, and deposition efficiency. Previous studies often relied on bond coating and shot-peening particles to achieve high density coatings. In this study, 6061 alloy coatings were successfully deposited onto high-pressure die-cast AZ91 alloy substrates using a high-pressure cold spray system. The effects of carrier gas temperature (300–500 °C) and pressure (2.0–6.5 MPa) on the coating microstructure, porosity, adhesion strength, wear, and corrosion behavior were systematically investigated. Results reveal that increasing particle kinetic energy – achieved via elevated gas temperatures and pressures – significantly improved deposition quality. Specifically, porosity decreased from 4.5 % to below 1 % with increasing gas pressure at 500 °C. Coating deposited at temperatures above 400 °C and 6.5 MPa exhibited excellent interfacial adhesion, with bond strengths exceeding 30 MPa. Notably, the optimized coating demonstrated significantly enhanced corrosion resistance. Additionally, wear performance improved by ∼62 % relative to the HPDC AZ91 substrate. These findings underscore the potential of optimized Al6061 cold sprayed coatings to significantly enhance the surface performance of Mg alloys in demanding automotive and aerospace applications.

商用铝合金6061的冷喷涂沉积在实现高密度、均匀组织和沉积效率方面面临着重大挑战。以往的研究往往依靠粘结涂层和喷丸颗粒来实现高密度涂层。在本研究中，使用高压冷喷涂系统成功地将6061合金涂层沉积在高压压铸AZ91合金基板上。系统研究了载气温度（300 ~ 500℃）和载气压力（2.0 ~ 6.5 MPa）对涂层微观组织、孔隙率、附着强度、磨损和腐蚀行为的影响。结果表明，通过提高气体温度和压力来增加颗粒动能，可以显著改善沉积质量。具体来说，在500℃时，随着气体压力的增加，孔隙度从4.5%下降到1%以下。在高于400℃和6.5 MPa的温度下沉积的涂层具有良好的界面附着力，结合强度超过30 MPa。值得注意的是，优化后的涂层的耐腐蚀性显著增强。此外，与HPDC AZ91基体相比，耐磨性能提高了~ 62%。这些发现强调了优化Al6061冷喷涂涂层的潜力，可以显着提高镁合金在苛刻的汽车和航空航天应用中的表面性能。

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引用次数: 0

Mapping local orientation and strain fields around intermetallic particles in an Al2050 alloy during elastic tensile loading by scanning 3DXRD and DCT 利用扫描3DXRD和DCT绘制Al2050合金弹性拉伸加载过程中金属间颗粒周围的局部取向和应变场

IF 5.5 2区材料科学 Q1 MATERIALS SCIENCE, CHARACTERIZATION & TESTING

Materials Characterization

Pub Date : 2026-02-01 DOI: 10.1016/j.matchar.2026.116095

Gisele Macieira , Pierre Lhuissier , James A.D. Ball , Jonathan Wright , Luc Salvo , Haixing Fang

Intermetallic phases are known to significantly influence the evolution of the local microstructure in Al alloys during processing and thus affect their mechanical properties. However, non-destructively mapping the local orientation and strain fields around intermetallic particles remains technically challenging. Here, we present a multi-modal synchrotron X-ray study on an Al2050 alloy to map the orientations and strains in both Al grains and secondary-phase particles as a function of tensile loading in the elastic regime. Combined with phase contrast tomography (PCT), we visualize the spatial distribution of the secondary phases and pre-existing pores together with the 3D Al grain structure characterized by diffraction contrast tomography (DCT), while higher resolution mappings of orientations and strains for both Al and secondary phase particles (Al₇ Cu₂ Fe) are resolved by scanning 3D X-ray diffraction (s3DXRD). This multi-modal approach not only allows comprehensive microstructure characterization, but also cross-validates the grain orientation reconstruction. The results show that during tensile loading, the intermetallic particles undergo a compressive strain and induce a high stress gradient and unexpected lattice rotation in a local area of an Al grain. This highlights the presence of grain plasticity at only 55% of the yield stress influenced by the intermetallic particles. We demonstrate that studying the evolution of the matrix-precipitates microstructure greatly benefits from the multi-modal approach of combining PCT, DCT and s3DXRD.

金属间相对铝合金加工过程中局部组织的演变有重要影响，从而影响其力学性能。然而，非破坏性地绘制金属间颗粒周围的局部取向和应变场在技术上仍然具有挑战性。在这里，我们对Al2050合金进行了多模态同步x射线研究，以绘制Al晶粒和二次相颗粒的取向和应变在弹性状态下作为拉伸载荷的函数。结合相衬层析成像技术（PCT），利用衍射对比层析成像技术（DCT）对二次相和孔隙的空间分布以及三维Al晶粒结构进行了可视化，同时利用扫描三维x射线衍射（s3DXRD）对Al和二次相颗粒（Al7 Cu2 Fe）的取向和应变进行了更高分辨率的映射。这种多模态方法不仅可以进行全面的微观结构表征，而且可以交叉验证晶粒取向重建。结果表明，在拉伸加载过程中，金属间颗粒承受压缩应变，在Al晶粒局部区域产生高应力梯度和意想不到的晶格旋转。这表明，受金属间颗粒影响，仅在屈服应力的55%处存在晶粒塑性。研究表明，结合PCT、DCT和s3DXRD的多模态方法对基体-析出相微观结构的演变有很大的帮助。

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引用次数: 0

Understanding effective elastic constants and elastic symmetry in RUS: From single crystals to textured polycrystals 理解RUS中的有效弹性常数和弹性对称性：从单晶到纹理多晶

IF 5.5 2区材料科学 Q1 MATERIALS SCIENCE, CHARACTERIZATION & TESTING

Materials Characterization

Pub Date : 2026-02-01 DOI: 10.1016/j.matchar.2026.116105

Florian Le Bourdais, Nicolas Leymarie, Audrey Gardahaut

Resonant Ultrasound Spectroscopy (RUS) is an inverse method used to characterize elastic constants of a sample based on its acoustic or elastic resonance spectrum. Its main stages are the measurement of the resonance frequencies, the choice of a forward model, assuming well-known geometrical properties and uniform density, and an inverse problem methodology that yields material elastic properties. In the forward model, one must assume a certain elastic symmetry class, which represents the symmetry of the sample and defines the number of unknown elastic constants solved for in the inverse problems. We have found that this choice of sample elastic symmetry, and the associated parametrization by elastic constants and Euler angles, is almost always not discussed and sometimes not well understood by practitioners. We find the situation is particularly confusing for textured samples: exactly what elastic constants does RUS determine in that case? In this paper, we aim at clarifying the elastic symmetry choice in the context of polycrystal texture characterization, which has already seen many contributions using RUS. We illustrate this with texture simulations carried out with MTEX to practically show how different textures can lead to elastic symmetries that range from isotropic to triclinic. Finally, we discuss experimental inversions on an additively manufactured 316 L sample under different sample symmetries assumptions and illustrate the aforementioned topic of choosing a symmetry.

共振超声光谱（RUS）是一种基于声学或弹性共振谱来表征样品弹性常数的逆方法。其主要阶段是共振频率的测量，正演模型的选择，假设已知的几何特性和均匀密度，以及产生材料弹性特性的反问题方法。在正演模型中，必须假定有一定的弹性对称类，它代表了样本的对称性，并定义了在反问题中求解的未知弹性常数的数量。我们发现，样本弹性对称性的选择，以及相关的弹性常数和欧拉角的参数化，几乎总是没有被讨论，有时也没有被从业者很好地理解。我们发现这种情况对于纹理样本来说尤其令人困惑：在这种情况下，RUS确定的弹性常数究竟是多少？在本文中，我们的目的是澄清弹性对称选择在多晶纹理表征的背景下，这已经看到了许多贡献使用RUS。我们用MTEX进行的纹理模拟来说明这一点，以实际显示不同的纹理如何导致从各向同性到三斜的弹性对称性。最后，我们讨论了在不同的样品对称假设下，对一个增材制造的316l样品的实验反演，并举例说明了上述选择对称的主题。

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引用次数: 0

Effect of Ti content on the microstructural, mechanical and oxidation properties of ternary VNbTi refractory medium-entropy alloys Ti含量对三元VNbTi难熔中熵合金组织、力学和氧化性能的影响

IF 5.5 2区材料科学 Q1 MATERIALS SCIENCE, CHARACTERIZATION & TESTING

Materials Characterization

Pub Date : 2026-01-31 DOI: 10.1016/j.matchar.2026.116088

Congtao Luo , Kai Xiong , Yingwu Wang , Shunmeng Zhang , Chengchen Jin , Haijun Wu , Zhangyi Chen , Junhao Mao , Rui Yang , Naigang Liao

Refractory medium-entropy alloys (RMEAs) are promising candidates for high-temperature structural applications owing to their exceptional thermal stability and mechanical performance. Among them, VNbTi RMEAs exhibit remarkable ductility and tunable physicochemical properties. Titanium, as a key alloying component, not only reduces the alloy density but also affects solid-solution strengthening and oxidation behavior. However, the comprehensive influence of Ti content on phase stability, strength-ductility synergy, and oxidation resistance in VNbTi alloy remains insufficiently understood. In this study, VNbTi_x (x = 1.0–2.5) alloys were fabricated to systematically investigate these relationships. All alloys have a single-phase BCC structure, excellent cold-rolling formability, and tensile elongation exceeding 20% at room temperature. Increasing Ti content decreases density but weakens solid-solution strengthening, leading to reductions in yield strength and hardness. In contrast, higher Ti content markedly enhance oxidation resistance above 600 °C through the formation of dense TiO₂ and TiNb₂O₇ surface layers that effectively suppress oxygen diffusion. This work elucidates the synergistic role of Ti in achieving lightweight design, ductility retention, and improved oxidation resistance, providing compositional guidelines for developing new RMEAs.

耐火中熵合金（rmea）由于其优异的热稳定性和机械性能，在高温结构应用中具有广阔的应用前景。其中，VNbTi rmea具有显著的延展性和可调的物理化学性质。钛作为关键的合金成分，不仅会降低合金密度，还会影响合金的固溶强化和氧化行为。然而，Ti含量对VNbTi合金相稳定性、强度-塑性协同和抗氧化性的综合影响尚不清楚。本研究制备了VNbTix （x = 1.0-2.5）合金，系统地研究了这些关系。所有合金均为单相BCC组织，具有优异的冷轧成形性，室温拉伸伸长率超过20%。增加Ti含量会降低密度，但会减弱固溶强化，导致屈服强度和硬度降低。相比之下，较高的Ti含量通过形成致密的TiO2和TiNb2O7表面层，有效地抑制氧气扩散，显著提高了600℃以上的抗氧化性。这项工作阐明了钛在实现轻量化设计、延展性保持和提高抗氧化性方面的协同作用，为开发新的rmea提供了成分指导。

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引用次数: 0

Competition mechanism between dissolution and transformation of second phases in a DC casting 7050 aluminum alloy ingot during homogenization revealed by in-situ scanning electron microscopy 原位扫描电镜研究了7050铝合金铸锭均匀化过程中第二相溶蚀与转变的竞争机制

IF 5.5 2区材料科学 Q1 MATERIALS SCIENCE, CHARACTERIZATION & TESTING

Materials Characterization

Pub Date : 2026-01-31 DOI: 10.1016/j.matchar.2026.116103

Yaozhong Zhang , Ni Tian , Quanxin Yan , Yinzhu Li , Zihan Gao , Xinghui Li , Yiran Zhou , Gang Zhao , Gaowu Qin

7050 aluminum alloy is a key structural material widely used in aerospace. Homogenization is essential for direct chill (DC) casting 7050 aluminum alloy ingots to reduce dendrite segregation. The evolution of constituent particles in a DC casting 7050 aluminum alloy ingot (Φ155 mm) during homogenization at 470 °C was studied via in-situ heating SEM observation combined with XRD, phase diagrams and thermodynamic simulations. The results showed that the as-cast alloy contains abundant AlZnMgCu (T-phase) and a few Al₇Cu₂Fe phase particles, without any Al₂CuMg (S-phase). During heating at 470 °C, T-phase in-situ transforms into S-phase, and only S-phase can dissolve into the matrix. The evolution of constituent particles in alloy ingot can be characterized by three stages: Stage I, T-phase in-situ transforms into S-phase without any dissolution of second phases Stage II, T-phase transformation and S-phase dissolution occur simultaneously; Stage III, S-phase solely dissolves, and its volume fraction decreases to 0.34% at a rate of v_SD = 5.02 t^-1.48 as holding time t prolonged. This work provides quantitative evidence and a theoretical foundation for optimizing the industrial homogenization of 7xxx series aluminum alloy ingots.

7050铝合金是广泛应用于航空航天领域的关键结构材料。均匀化是7050铝合金直冷铸造过程中减少枝晶偏析的关键。采用原位加热SEM观察、XRD、相图和热力学模拟等方法，研究了7050铝合金（Φ155 mm）铸锭在470℃下均匀化过程中组成颗粒的演变规律。结果表明：铸态合金中含有丰富的AlZnMgCu （t相）和少量的Al7Cu2Fe相颗粒，不含Al2CuMg （s相）；470℃加热时，t相原位转变为s相，只有s相能溶入基体。合金铸锭中组成颗粒的演化可分为三个阶段：第一阶段，t相原位转变为s相，第二相不溶出；第二阶段，t相转变与s相溶出同时发生；第三阶段，s相完全溶解，随着保温时间t的延长，其体积分数以vSD = 5.02 t-1.48的速率降低至0.34%。本工作为7xxx系列铝合金锭的工业均匀化优化提供了定量依据和理论基础。

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引用次数: 0

Microstructure-property relationships in NiW alloy coatings: Impact of processing routes and W content NiW合金涂层的显微组织-性能关系：工艺路线和W含量的影响

IF 5.5 2区材料科学 Q1 MATERIALS SCIENCE, CHARACTERIZATION & TESTING

Materials Characterization

Pub Date : 2026-01-31 DOI: 10.1016/j.matchar.2026.116099

D. Figuet, S. Cohendoz, C. Rébéré, C. Savall, J. Creus, J.L. Grosseau-Poussard

The microstructural evolution and mechanical properties of electrodeposited and sputtered nanostructured Ni and NiW coatings were investigated for a tungsten concentration range of 0–15 at.%. W incorporation into the Ni matrix leads to significant changes in key metallurgical parameters, including grain/entity size, crystallographic texture, surface morphology, and impurity content. Hardness variations are interpreted based on grain refinement and solid solution effects due to W. Notably, the elevated argon content in sputtered NiW coatings contributes substantially to the maximum hardness observed. Variations in Young's modulus is attributed to bonding energy modifications.

在钨浓度为0 ~ 15% at.%的条件下，研究了电沉积和溅射纳米Ni和NiW涂层的显微组织演变和力学性能。W掺入Ni基体导致关键冶金参数发生显著变化，包括晶粒/实体尺寸、晶体织构、表面形貌和杂质含量。硬度的变化是基于w的晶粒细化和固溶体效应来解释的。值得注意的是，溅射NiW涂层中氩含量的增加对观察到的最大硬度有很大的贡献。杨氏模量的变化归因于键能的改变。

引用次数: 0