Journal of Alloys and Metallurgical Systems最新文献_第3页

Investigating hot tearing in 6xxx-series aluminium alloys: A combined thermodynamic and experimental approach 研究6xxx系列铝合金的热撕裂：热力学和实验相结合的方法

Journal of Alloys and Metallurgical Systems

Pub Date : 2025-11-12 DOI: 10.1016/j.jalmes.2025.100221

Emidio Giansante , Alberto Fabrizi , Mohammad Pourgharibshahi , Giulio Timelli

The hot tearing of 6xxx-series aluminium alloys has been investigated over four levels of silicon (0.6, 0.8, 1.0, 1.2 wt%), magnesium (0.4, 0.6, 0.8, 1.0 wt%), iron (0.2, 0.4, 0.6, 0.8 wt%) and manganese (0.0, 0.2, 0.4, 0.6 wt%). Thermodynamic calculations based on the CALPHAD method were performed to evaluate the hot tearing index using the Kou criterion, and the results were compared with experimental data obtained by thermal analysis and microstructural investigations. The results revealed that the concentration of alloying elements, particularly silicon and magnesium, significantly affects the Kou index and the hot tearing behaviour of the material. An increase in iron content and the addition of manganese showed a beneficial effect on the resistance to hot tearing. The formation of branched α-AlFeSiMn compounds significantly reduced the development of hot tearing cracks, more so than the increased presence of the Mg₂Si phase. Comparison of Kou index values derived from both thermodynamic calculations and experimental solidification curves showed that the selection of the solid fraction range is crucial. Good agreement was achieved between the calculations and the experimental data when using a solid fraction interval of 0.87–0.94. Finally, the experimental results confirmed that a preliminary qualitative assessment of susceptibility to hot tearing can be made without resorting to more resource-intensive testing methods.

研究了6xxx系列铝合金在硅（0.6、0.8、1.0、1.2 wt%）、镁（0.4、0.6、0.8、1.0 wt%）、铁（0.2、0.4、0.6、0.8 wt%）和锰（0.0、0.2、0.4、0.6 wt%）四个等级上的热撕裂。基于CALPHAD方法进行热力学计算，采用Kou准则评价热撕裂指数，并将计算结果与热分析和显微组织研究得到的实验数据进行比较。结果表明，合金元素的浓度，特别是硅和镁的浓度，对材料的Kou指数和热撕裂行为有显著影响。铁含量的增加和锰的添加对抗热撕裂性能有良好的影响。支化α-AlFeSiMn化合物的形成比Mg2Si相的增加更明显地减少了热撕裂裂纹的发展。由热力学计算和实验凝固曲线得到的Kou指数值的比较表明，固体分数范围的选择是至关重要的。当固相分数区间为0.87 ~ 0.94时，计算结果与实验数据吻合较好。最后，实验结果证实，无需使用更多资源密集型的测试方法，即可对热撕裂敏感性进行初步定性评估。

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引用次数: 0

Anti corrosion system for high parameter garbage power plant based on Analytic Hierarchy Process Fuzzy comprehensive evaluation 基于层次分析法的高参数垃圾电厂防腐系统模糊综合评价

Journal of Alloys and Metallurgical Systems

Pub Date : 2025-11-10 DOI: 10.1016/j.jalmes.2025.100223

Qu Zuopeng , Tian Xinli

After the high parameterization of the boiler in the garbage power plant, the corrosion of the pipe wall intensifies, and enterprises face the urgent problem of how to choose the best protection method according to their own needs. At present, there are many methods for coating corrosion protection of waste incineration boiler pipelines, each with its own advantages and disadvantages. Therefore, it is necessary to establish a scientific and effective evaluation method for various existing corrosion protection technologies to help relevant scientific and technological personnel choose coating protection methods and technologies reasonably. This article designs a total of 13 typical anti-corrosion process schemes currently in use, and selects two types of protection schemes: high cost-effectiveness and high economy. After determining the weight coefficients, a fuzzy comprehensive evaluation method based on Analytic Hierarchy Process was adopted. After constructing a judgment matrix and consistency testing, a comprehensive evaluation technology ranking suitable for high-temperature protection schemes under high parameter conditions was finally formed. This evaluation method is used to select protection schemes, which has significant effects, is simple and convenient, and has strong practicality.

垃圾电厂锅炉高参数化后，管壁腐蚀加剧，企业面临着如何根据自身需求选择最佳保护方法的迫切问题。目前，垃圾焚烧锅炉管道的涂层防腐方法很多，各有优缺点。因此，有必要对现有的各种防腐技术建立科学有效的评价方法，帮助相关科技人员合理选择涂层防护方法和技术。本文设计了目前使用的13种典型防腐工艺方案，选取了性价比高、经济性高的两种防护方案。在确定了权重系数后，采用了基于层次分析法的模糊综合评价方法。通过构建判断矩阵和一致性测试，最终形成了适合高参数条件下高温防护方案的综合评价技术排序。该评价方法用于选择防护方案，效果显著，简单方便，实用性强。

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引用次数: 0

Study of the use of aluminium-containing waste in ferrosilicon production 含铝废料在硅铁生产中的应用研究

Journal of Alloys and Metallurgical Systems

Pub Date : 2025-11-10 DOI: 10.1016/j.jalmes.2025.100224

Ablay Zhunusov, Aygul Zhunusova, Anar Kenzhebekova, Altynsary Bakirov, Renat Tyulyubayev

This article presents the results of a study to select the most cost-effective raw materials for producing ferrosilicon and aluminum. Ash and slag waste from Ekibastuz coal (Kazakhstan) and aluminum slag were selected as the primary materials for producing pellets. Studies of the physicochemical properties of the resulting pellets revealed the presence of refractory minerals (mullite and sillimanite) in the experimental pellets. An analysis of the physicochemical properties revealed that heating the first batch of pellets in an oxidizing environment at temperatures of 1000–1200 °C predominantly resulted in the formation of mullite and quartz, as confirmed by X-ray diffraction and petrographic analysis. Thermodynamic diagram analysis showed that aluminum silicates begin to decompose in the range of 1650–2050 °C, with mullite decomposing at 1800 °C. A characteristic feature of this range is the formation of aluminum carbide, which, in the presence of excess silica, is easily neutralized to form ferrosilicon and aluminum. Above 2050 °C, silicon carbide in the charge sharply decreases, and the concentration of silicon and aluminum in the metal increases. Silicon carbide is primarily consumed in reaction with alumina, silicon suboxides, and aluminum to form a silicon-aluminum alloy.

本文介绍了一项研究的结果，以选择最具成本效益的原料生产硅铁和铝。选取哈萨克斯坦Ekibastuz煤的灰渣和铝渣作为生产球团的主要原料。对所得球团的物理化学性质的研究表明，在实验球团中存在难熔矿物（莫来石和硅线石）。理化性质分析表明，第一批球团在1000-1200℃的氧化环境中加热，主要形成莫来石和石英，x射线衍射和岩石学分析证实了这一点。热力学图分析表明，硅酸铝在1650 ~ 2050℃开始分解，莫来石在1800℃开始分解。这个范围的一个特征是形成碳化铝，在过量二氧化硅的存在下，很容易中和形成硅铁和铝。在2050℃以上，电荷中的碳化硅急剧减少，金属中硅和铝的浓度增加。碳化硅主要与氧化铝、氧化硅和铝反应形成硅铝合金。

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引用次数: 0

Microstructural and elemental evolution of directed energy deposited inconel 825 under hot corrosion 热腐蚀下定向能沉积inconel 825的组织与元素演化

Journal of Alloys and Metallurgical Systems

Pub Date : 2025-11-06 DOI: 10.1016/j.jalmes.2025.100222

Ilangovan Arun , Sarange Shreepad Marotrao , Vipin Sharma , Sivakumar Karthikeyan , Zakir Hussain , P. Veeramanikandan , M. Venkatesulu , Rajendiran M. , T.S. Senthil

This study investigates the hot corrosion behaviour of Inconel 825 wall under high-temperature environments using a eutectic mixture of sodium sulphate (Na₂SO₄) and vanadium pentoxide (V₂O₅). The wall was fabricated using cold metal transfer (CMT)-based directed energy deposition (DED) process. Specimens were exposed to temperatures of 700°C and 900°C to simulate conditions encountered in industrial applications such as marine engineering and power generation. At 700°C, the alloy exhibited a weight gain of approximately 0.15 mg/cm² over 50 h, attributed to the formation of a dense and adherent Cr₂O₃ oxide layer. SEM/EDS analysis confirmed a uniform chromium-enriched oxide scale with limited incorporation of vanadium and sulphur, maintaining parabolic corrosion kinetics. At 900°C, the weight gain increased significantly to 0.7 mg/cm², reflecting a shift to linear kinetics. SEM/EDS analysis at this temperature indicated extensive incorporation of vanadium and sulphur into the oxide layer, forming non-protective compounds such as NiV₂O₆, CrVO₄, Cr₂S₃, and Ni₃S₂. Elemental mapping demonstrated chromium depletion in the oxide scale and substrate, compromising the formation of a continuous Cr₂O₃ layer. This study emphasizes the temperature-dependent nature of hot corrosion mechanisms of Inconel 825 and highlights the need for surface engineering techniques to enhance its performance in aggressive environments.

本研究使用硫酸钠（Na₂SO₄）和五氧化二钒（V₂O₅）的共晶混合物在高温环境下研究了Inconel 825壁的热腐蚀行为。采用基于冷金属转移（CMT）的定向能沉积（DED）工艺制备了该壁。样品暴露在700°C和900°C的温度下，以模拟海洋工程和发电等工业应用中遇到的条件。在700°C时，合金的重量增加了大约0.15 mg/cm²，超过50 h，这是由于形成了致密和粘附的Cr₂O₃氧化层。SEM/EDS分析证实了均匀的富铬氧化垢，钒和硫的掺入有限，保持抛物线腐蚀动力学。在900°C时，增重显著增加到0.7 mg/cm²，反映了线性动力学的转变。在这个温度下的SEM/EDS分析表明，钒和硫在氧化层中大量结合，形成了非保护性化合物，如NiV₂O₆、CrVO₄、Cr₂S₃和Ni₃S₂。元素映射显示了氧化层和衬底中的铬耗尽，损害了连续Cr₂O₃层的形成。本研究强调了Inconel 825热腐蚀机制的温度依赖性质，并强调了表面工程技术的必要性，以提高其在腐蚀性环境中的性能。

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引用次数: 0

Resource-efficient fracture-mechanical characterization of short cracks in additively manufactured titanium aluminides 增材制造铝酸钛短裂纹的资源节约型断裂力学特征

Journal of Alloys and Metallurgical Systems

Pub Date : 2025-10-30 DOI: 10.1016/j.jalmes.2025.100220

Niklas Kloos, Mirko Teschke, Selim Mrzljak, Alexander Koch, Frank Walther

Titanium aluminides are gaining attention in the aerospace and automotive sectors due to their high-temperature resistance, low density, and favorable mechanical properties. They offer significant weight advantages over conventional nickel-based superalloys, enhancing energy efficiency and reducing CO₂ emissions. Additive manufacturing (AM) enables resource-efficient production of titanium aluminides with high design flexibility. However, the presence of porosity necessitates detailed fracture-mechanical characterization for safety-relevant applications. This study investigates key parameters for characterizing the short-crack behavior of additively manufactured titanium aluminides produced by electron beam melting (EBM). A testing method incorporating load increase tests was developed to acquire R-curves from single miniature specimens, determining fatigue crack growth thresholds. Various testing parameters were evaluated using resonant fatigue testing and electrical resistance-based crack measurement. The results show that stress increment and step length significantly influence R-curve development and crack propagation. Additionally, build orientation impacts threshold values, while hot isostatic pressing (HIP) can affect grain structure and crack growth behavior. The feasibility of pre-cracking under compressive loading suggests this method should be prioritized for accurate results. This study establishes a reliable foundation for further investigations into the fatigue behavior of additively manufactured titanium aluminides in safety-critical applications.

钛铝化物由于其耐高温、低密度和良好的机械性能，在航空航天和汽车领域受到越来越多的关注。与传统的镍基高温合金相比，它们具有显著的重量优势，提高了能源效率，减少了二氧化碳排放。增材制造（AM）使资源高效的钛铝化物生产具有高设计灵活性。然而，为了安全相关的应用，孔隙度的存在需要详细的裂缝力学特征。研究了电子束熔炼增材铝化钛短裂纹行为的关键参数。提出了一种结合载荷增加试验的试验方法，以获取单个微型试样的r曲线，确定疲劳裂纹扩展阈值。通过共振疲劳试验和基于电阻的裂纹测量来评估各种测试参数。结果表明，应力增量和步长对r曲线的发展和裂纹扩展有显著影响。此外，构建取向影响阈值，而热等静压（HIP）可以影响晶粒结构和裂纹扩展行为。在压缩荷载作用下预裂的可行性表明，为了获得准确的结果，应优先考虑这种方法。该研究为进一步研究增材制造铝化钛在安全关键应用中的疲劳行为奠定了可靠的基础。

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引用次数: 0

Design of lightweight high-temperature structural materials based on Ti-Mo-Ta-Cr-Al refractory compositionally complex alloys, Part I: Phase stability and mechanical properties 基于Ti-Mo-Ta-Cr-Al复合耐火合金的轻质高温结构材料设计，第一部分：相稳定性和力学性能

Journal of Alloys and Metallurgical Systems

Pub Date : 2025-10-21 DOI: 10.1016/j.jalmes.2025.100219

Amin Radi , Daniel Schliephake , Sandipan Sen , R.J. Vikram , Shubhashis Dixit , Jan Lars Riedel , Liu Yang , Chongchong Tang , Bronislava Gorr , Alexander Kauffmann , Martin Heilmaier

This study presents the design and evaluation of Ti-rich refractory complex concentrated alloys (RCCAs) within the Ta-Mo-Ti-Cr-Al system, aiming for low density and high-temperature stability. Alloys containing 44–54 at% Ti were synthesized and assessed for phase stability, microstructural evolution, and mechanical performance up to 1000 °C. All compositions primarily exhibit a single-phase disordered A2 structure, even after prolonged thermal exposure. A minor C15 Laves phase appears in Cr- and Ta-rich compositions, with Mo content playing a critical role in its formation. The alloys show significant plasticity at room temperature and maintain high strength at elevated temperatures. Among them, the 44Ti-20Mo-15Ta-15Cr-6Al (at%) composition offers the best balance of thermal stability and mechanical performance at a density of (7.5 ± 0.1) g/cm³. Compared to commercial Ti- and Ni-based alloys, the designed RCCAs demonstrate superior strength retention above 570 °C, both in absolute and specific yield strength, outperforming single-phase Ti- and Ni-based alloys up to 1000 °C.

本研究提出了在Ta-Mo-Ti-Cr-Al体系中设计和评估富钛耐火复合浓缩合金（RCCAs），旨在实现低密度和高温稳定性。合成了含44-54 % Ti的合金，并对其相稳定性、显微组织演变和高达1000°C的力学性能进行了评估。所有成分主要表现为单相无序A2结构，即使经过长时间的热暴露。在富Cr和富ta成分中出现少量的C15 Laves相，Mo含量在其形成中起关键作用。合金在室温下表现出显著的塑性，在高温下保持较高的强度。其中，在密度为（7.5 ± 0.1）g/cm³时，44Ti-20Mo-15Ta-15Cr-6Al （at%）组分的热稳定性和力学性能达到了最佳平衡。与商业Ti和ni基合金相比，设计的rcca在570°C以上表现出优越的强度保持，无论是绝对屈服强度还是比屈服强度，都优于单相Ti和ni基合金在1000°C以下的性能。

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引用次数: 0

Studying inheritance of properties in the "consumable-base material" system at electroslag surfacing 研究电渣堆焊中“耗材-基材”体系的性能继承

Journal of Alloys and Metallurgical Systems

Pub Date : 2025-10-14 DOI: 10.1016/j.jalmes.2025.100218

Yurii Kuskov , Iryna Bohaichuk , Anton Netyaga , Ihor Bilonyk

The results of electroslag surfacing with shot from carbon steel (∼ 1 % C) previously subjected to varying degrees of mechanical stress, work hardening, are presented. The work hardening was carried out by its 50-cycle use in a shot blasting machine, as well as in the process of ball burnishing in a ball mill. The possibility of influence of such type of treatment on the change in the microstructure of the deposited metal was established. When forming a metal with a dendritic-cellular structure, the use of preliminary work hardening of shot allows to reduce the secondary dendrite arm spacing (the distance between secondary dendrite arms) by approx. 40 % and reduce the size of cells by approx. 20–30 %.

本文介绍了电渣堆焊碳钢（~ 1 % C）经不同程度的机械应力和加工硬化处理后的结果。在抛丸机上进行了50次循环的加工硬化，并在球磨机上进行了球磨加工。确定了这种处理对沉积金属微观组织变化的影响可能性。当形成具有枝状细胞结构的金属时，使用预加工硬化的射丸可以减少大约二次枝晶臂间距（二次枝晶臂之间的距离）。40% %，并将细胞大小减小约。20 - 30 %。

引用次数: 0

Design of lightweight high temperature structural materials based on Ti–Mo–Ta–Cr–Al refractory compositionally complex alloys, Part II: High temperature oxidation behavior 基于Ti-Mo-Ta-Cr-Al复合耐火合金的轻质高温结构材料设计，第二部分：高温氧化行为

Journal of Alloys and Metallurgical Systems

Pub Date : 2025-10-11 DOI: 10.1016/j.jalmes.2025.100217

Chongchong Tang , Amin Radi , Michael Dürrschnabel , Ute Jäntsch , Michael Klimenkov , Alexander Kauffmann , Martin Heilmaier , Carsten Schroer , Bronislava Gorr

Three Ti-rich Ti–Mo–Ta–Cr–Al Refractory Compositionally Complex Alloys (RCCAs) with low density of ∼7.5 g/cm³ , identified in Part I for their stable single-phase disordered A2 structure, with room-temperature compressive plasticity and exceptional strength retention up to 1000 °C, are investigated here for their high-temperature oxidation behavior. Isothermal oxidation experiments from 800 to 1100 °C revealed the formation of multilayered oxide scales comprising four sublayers with rutile- and corundum-structured oxides. Mo initially precipitates as metallic particles within the inner oxide layer before undergoing oxidation and volatilization. Volatilization of MoO₃ becomes noticeable at temperatures above 900 °C, occurring more locally with lower Mo content. Two primary oxide scale degradation mechanisms were identified: localized scale disruption from Mo oxide volatilization and oxide scale spalling due to excessive TiN precipitation. The findings highlight the need for careful compositional balancing of Mo and Ti in these Ti-rich RCCAs to enhance oxidation resistance by simultaneously suppressing Mo-oxide volatilization and internal nitridation. Overall, they exhibit improved oxidation performance compared to conventional TiAl-based alloys and display oxidation kinetics comparable to equimolar TaMoCrTiAl at elevated temperatures.

三种低密度为~ 7.5 g/cm³ 的富钛Ti-Mo-Ta-Cr-Al耐火成分复合合金（RCCAs），在第一部分中被鉴定为稳定的单相无序A2结构，具有室温压缩塑性和高达1000°C的优异强度保持，在这里研究它们的高温氧化行为。在800 ~ 1100℃的等温氧化实验中，发现了由金红石和刚玉结构的氧化物组成的多层氧化鳞片。Mo在经过氧化和挥发之前，首先以金属颗粒的形式在内氧化层中析出。在900°C以上的温度下，MoO3的挥发变得明显，在Mo含量较低的情况下更局部地发生。确定了两种主要的氧化皮降解机制：氧化钼挥发引起的局部氧化皮破坏和过量TiN沉淀引起的氧化皮剥落。这些发现强调了在这些富钛RCCAs中需要仔细平衡Mo和Ti的成分，以通过同时抑制Mo-氧化物挥发和内部氮化来增强抗氧化性。总的来说，与传统的钛基合金相比，它们表现出更好的氧化性能，并且在高温下显示出与等摩尔TaMoCrTiAl相当的氧化动力学。

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引用次数: 0

Design and development of heterogeneous aluminum matrix hybrid composites for enhanced ductility 增强延性的非均相铝基混杂复合材料的设计与开发

Journal of Alloys and Metallurgical Systems

Pub Date : 2025-10-10 DOI: 10.1016/j.jalmes.2025.100216

Tasratur Reaj Neha , Md. Irfan Khan , Dinesh Barnana , Surya Akter , Abdul Gafur , Tofail Syed , Ehtsham Ul Haq , Fahmida Gulshan

Traditional aluminum-based composite materials are limited in application due to the contradiction between strength and ductility. To address this, a dual matrix composite system based on Al-TiO₂-H₃BO₃ was developed using ball milling, cold pressing, and sintering. In this system, ball-milled aluminum forms the internal matrix with in-situ reinforcements, while unmilled aluminum, added in proportions from 0 % to 75 %, creates an outer matrix known as the reinforcement-lean zone (RLZ). By introducing un-ball-milled aluminum to form RLZ with scarce reinforcement, the strength and toughness were synergistically optimized. Dual matrix hybrid composites were sintered at temperatures between 600°C and 800°C, following differential thermal analysis that indicated the formation of reinforcing particles above 550°C. X-ray diffraction and Energy Dispersive Spectroscopy confirmed the presence of in situ reinforcements such as γAl₂O₃, AlB₂, TiB₂, and Al₃Ti within the aluminum matrix. Microscopy demonstrated dual matrix morphology displaying rearrangement of the RLZ and reinforcement-rich zone (RRZ). Maximum microhardness and strength were observed at a sintering temperature of 800°C. The composite with 0 % unmilled aluminum exhibited the highest hardness of 169.2 HV, whereas the highest toughness of 6.12 Jm-3 was achieved in the composite containing 75 % unmilled aluminum. Atomic Force Microscopy revealed a progressive decrease in surface roughness from 19.70 nm to 7 nm as the proportion of unmilled aluminum increased from 0 % to 75 %.

传统的铝基复合材料由于强度与延性的矛盾，限制了其应用。为了解决这一问题，采用球磨、冷压和烧结技术，开发了基于Al-TiO2-H3BO3的双基复合材料体系。在该系统中，球磨铝形成内部基体，并在原位增强，而未磨铝，添加比例从0 %到75 %，形成外部基体，称为增强-贫区（RLZ）。通过引入非球磨铝，形成少补强的RLZ，实现了强度和韧性的协同优化。双基杂化复合材料在600 ~ 800℃的温度下烧结，差热分析表明，在550℃以上形成了增强颗粒。x射线衍射和能量色散光谱证实了铝基体中存在γ - al2o3、AlB2、TiB2和Al3Ti等原位增强材料。显微镜显示双基质形态，显示RLZ和富补强区（RRZ）的重排。烧结温度为800℃时，合金的显微硬度和强度达到最大值。含0 %未磨铝的复合材料硬度最高，为169.2 HV，而含75 %未磨铝的复合材料韧性最高，为6.12 Jm-3。原子力显微镜显示，随着未磨铝的比例从0 %增加到75 %，表面粗糙度从19.70 nm逐渐降低到7 nm。

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引用次数: 0

Microstructures evolution and enhanced performance of hot-rolled 40CrNiMoA steel affected by cyclic quenching 循环淬火对热轧40CrNiMoA钢组织演变及性能增强的影响

Journal of Alloys and Metallurgical Systems

Pub Date : 2025-10-03 DOI: 10.1016/j.jalmes.2025.100215

Yiqi Cai , Furong Li , Haixin Zou , Zhiyong Xu , Peng Jiang

Optical microscopy (OM), scanning electron microscopy (SEM), X-ray diffraction (XRD), as well as tensile, hardness, and friction-wear tests were utilized to investigate the microstructural evolution, mechanical properties, and wear resistance of hot-rolled (HR) 40CrNiMoA steel after cyclic quenching (CQ) heat treatment following an initial water quenching (WQ) at 930 °C / 30 min. The CQ process involved 860 °C / 2 min + WQ. The results revealed that mutual transformation between austenite and martensite phases occurs during the CQ process. Compared to the HR sample, the austenite grain size in the CQ samples was significantly reduced and became more uniform. With increasing CQ passes, the strength and hardness of the 40CrNiMoA steel first increased and then decreased, reaching peak values after 2 passes of cyclic quenching (CQ2). Compared to the HR sample, these peak values (CQ2 sample) represented increases of 72.6 %, 73.8 %, and 63.3 % for yield strength, ultimate tensile strength, and hardness, respectively. The elongation first decreased, then increased (in CQ2 sample), and subsequently slightly decreased with increasing CQ passes. The elongation of the CQ2 sample was 19 % lower than that of the HR sample. Th e wear rate of the CQ2 sample decreased by 19.56 % compared to the HR sample. CQ heat treatment effectively enhances the strength and wear resistance of 40CrNiMoA steel while maintaining plasticity without significant deterioration.

采用光学显微镜（OM）、扫描电镜（SEM）、x射线衍射仪（XRD）以及拉伸、硬度和摩擦磨损试验，研究了热轧40CrNiMoA钢在930°C / 30 min初始水淬（WQ）后，经过循环淬火（CQ）热处理后的组织演变、力学性能和耐磨性。CQ工艺为860℃/ 2 min + WQ。结果表明，在CQ过程中发生了奥氏体与马氏体相的相互转变。与HR样品相比，CQ样品中的奥氏体晶粒尺寸明显减小，变得更加均匀。随着CQ道次的增加，40CrNiMoA钢的强度和硬度先升高后降低，在2道次循环淬火（CQ2）后达到峰值。与HR样品相比，这些峰值（CQ2样品）在屈服强度、极限抗拉强度和硬度方面分别提高了72.6 %、73.8 %和63.3 %。延伸率先下降，然后增加（在CQ2样品中），随后随着CQ次的增加而略有下降。CQ2样品的伸长率比HR样品低19 %。与HR样品相比，CQ2样品的磨损率降低了19.56 %。CQ热处理有效地提高了40CrNiMoA钢的强度和耐磨性，同时保持了塑性而没有明显劣化。

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引用次数: 0